阅读说明：本技术 一种设施黄瓜全生育期水溶肥及其施用方法和应用 (Facility cucumber whole growth period water-soluble fertilizer and application method and application thereof ) 是由 张玉凤 宋效宗 李彦 张英鹏 田慎重 边文范 董亮 袁长波 高燕 郭洪海 于 2019-11-14 设计创作，主要内容包括：本发明提供了一种设施黄瓜全生育期水溶肥及其施用方法和应用,属于农业应用技术领域,所述设施黄瓜全生育期水溶肥包括以下独立包装的肥料：第一大量元素水溶肥、第二大量元素水溶肥、第三大量元素水溶肥、含腐植酸水溶肥和微量元素水溶肥。本发明的设施黄瓜全生育期水溶肥的养分比例符合黄瓜不同生育期需肥特点和吸收规律,能够改良土壤、提高黄瓜抗逆能力,降低氮、磷流失,提高氮、磷利用率,提高黄瓜产量和提升黄瓜品质。本发明的设施黄瓜全生育期水溶肥不会出现潮解、结块、杂质过多、水不溶物含量超标、“胀气”等现象,有利于水溶肥的销售和施用。(The invention provides a facility cucumber whole growth period water-soluble fertilizer and an application method and application thereof, belonging to the technical field of agricultural application, wherein the facility cucumber whole growth period water-soluble fertilizer comprises the following independently packaged fertilizers: the fertilizer comprises a first macroelement water-soluble fertilizer, a second macroelement water-soluble fertilizer, a third macroelement water-soluble fertilizer, a humic acid-containing water-soluble fertilizer and a microelement water-soluble fertilizer. The nutrient proportion of the water-soluble fertilizer for the protected cucumber in the whole growth period accords with the fertilizer requirement characteristics and the absorption rule of the cucumber in different growth periods, and the water-soluble fertilizer can improve soil, improve the stress resistance of the cucumber, reduce the loss of nitrogen and phosphorus, improve the utilization rate of nitrogen and phosphorus, improve the yield of the cucumber and improve the quality of the cucumber. The water-soluble fertilizer for the protected cucumbers in the whole growth period does not have the phenomena of deliquescence, caking, excessive impurities, excessive content of water-insoluble substances, flatulence and the like, and is favorable for selling and applying the water-soluble fertilizer.)

1. The water-soluble fertilizer for the whole growth period of the protected cucumbers comprises the following independently packaged fertilizers: a first macroelement water-soluble fertilizer, a second macroelement water-soluble fertilizer, a third macroelement water-soluble fertilizer, a humic acid-containing water-soluble fertilizer and a microelement water-soluble fertilizer;

the first macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 14-15 parts of urea, 28-31 parts of potassium nitrate, 30-33 parts of monoammonium phosphate, 8-12 parts of ammonium polyphosphate, 4-6 parts of magnesium sulfate monohydrate and 6-9 parts of calcium nitrate;

the second macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 17-20 parts of urea, 55-62 parts of potassium nitrate, 6-9 parts of monoammonium phosphate, 2-5 parts of ammonium polyphosphate, 2-4 parts of zinc sulfate and 5-8 parts of boric acid;

the third macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 28-30 parts of urea, 50-55 parts of potassium nitrate, 4-6 parts of monoammonium phosphate, 4-7 parts of ammonium polyphosphate, 2-5 parts of zinc sulfate and 3-6 parts of boric acid;

the humic acid-containing water soluble fertilizer comprises the following raw materials in parts by weight: 60-72 parts of potassium fulvate, 14-18 parts of urea and 14-17 parts of potassium nitrate;

the microelement water-soluble fertilizer comprises the following raw materials in parts by weight: 22-27 parts of zinc sulfate monohydrate, 70-78 parts of boric acid, 3-5 parts of sodium citrate and 2-3 parts of ammonium polyphosphate.

2. The water-soluble fertilizer for the protected cucumber in the whole growth period according to claim 1, wherein the humic acid-containing water-soluble fertilizer is a granular water-soluble fertilizer with the grain size of 5-7 mm; the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer or the microelement water-soluble fertilizer are powdery water-soluble fertilizers.

3. The application method of the water-soluble fertilizer for the whole growth period of the cucumber in the protected period as claimed in claim 1 or 2, which comprises the following steps:

1) in the seedling stage of the cucumber, applying a first macroelement water-soluble fertilizer and a humic acid-containing water-soluble fertilizer; the application frequency of the first macroelement water-soluble fertilizer is 1-2 times, and the application amount of each time is 8-10 kg/mu; the application frequency of the humic acid-containing water-soluble fertilizer is 1-2 times, and the application amount of each time is 2-5 kg/mu;

2) in the flowering and cucumber-sitting period of the cucumbers, a first macroelement water-soluble fertilizer and a microelement water-soluble fertilizer are applied; the application frequency of the first macroelement water-soluble fertilizer is 2-4 times, and the application amount of each time is 25-32 kg/mu; the application frequency of the trace element water-soluble fertilizer is 1-2 times, and the application amount of each time is 0.03-0.04 kg/mu

3) Applying a second macroelement water-soluble fertilizer and a humic acid-containing water-soluble fertilizer at the early cucumber bearing stage; the application frequency of the second macroelement water-soluble fertilizer is 3-5 times, and the application amount of each time is 35-43 kg/mu; the application frequency of the humic acid-containing water-soluble fertilizer is 1-2 times, and the application amount of each time is 5-8 kg/mu;

4) in the cucumber bearing season, a second macroelement water-soluble fertilizer and a microelement water-soluble fertilizer are applied; the application frequency of the second macroelement water-soluble fertilizer is 7-9 times, and the application amount of each time is 45-55 kg/mu; the application frequency of the trace element water-soluble fertilizer is 1-2 times, and the application amount of each time is 0.03-0.04 kg/mu;

5) in the late stage of cucumber bearing, a third macroelement water-soluble fertilizer is applied; the application frequency of the third macroelement water-soluble fertilizer is 1-3 times, and the application amount of each time is 10-18 kg/mu.

4. The application method of claim 3, wherein the first, second and third macroelement water-soluble fertilizers have an independent fertilization interval of 7-10 days.

5. The application method according to claim 3, wherein the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer and the humic acid-containing water-soluble fertilizer are independently applied in a mode of drip irrigation or flushing with water.

6. The application method according to claim 3, wherein the water-soluble fertilizer containing trace elements is applied by spraying.

7. The use of the greenhouse cucumber whole growth period water-soluble fertilizer in the greenhouse cucumber cultivation as claimed in claim 1 or 2.

8. Use according to claim 7, wherein the use comprises increasing cucumber yield and/or improving cucumber quality and/or increasing soil nitrogen, phosphorus content and/or reducing nitrogen, phosphorus loss and/or improving soil microbial environment.

9. Use according to claim 8, wherein the improvement of cucumber quality comprises an improvement of the vitamin C content of cucumber and/or an improvement of the sugar content of cucumber.

Technical Field

The invention relates to the technical field of agricultural application, in particular to a facility cucumber whole growth period water-soluble fertilizer and an application method and application thereof.

Background

The water-soluble fertilizer has good solubility, high absorption and utilization rate and convenient application, can realize water and fertilizer integration, achieves the effects of saving water, fertilizer and labor, and is accepted by most vegetable growers in facilities. However, most of the fertilizers on the market are general products N-P of different crops₂O₅-K₂O15-15-15, 17-17-17 or high nitrogen, high potassium products. Blindly selecting water-soluble fertilizer with high nutrient content, and using the fertilizer for planting cucumber in facilities for a long time results in imbalance of nutrient proportion, overlarge nitrogen and phosphorus consumption, low utilization rate and serious loss.

Disclosure of Invention

The invention aims to provide a facility cucumber whole growth period water soluble fertilizer and an application method and application thereof.

In order to achieve the above object, the present invention provides the following technical solutions:

the invention provides a facility cucumber whole growth period water-soluble fertilizer, which comprises the following independently packaged fertilizers: a first macroelement water-soluble fertilizer, a second macroelement water-soluble fertilizer, a third macroelement water-soluble fertilizer, a humic acid-containing water-soluble fertilizer and a microelement water-soluble fertilizer;

the first macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 14-15 parts of urea, 28-31 parts of potassium nitrate, 30-33 parts of monoammonium phosphate, 8-12 parts of ammonium polyphosphate, 4-6 parts of magnesium sulfate monohydrate and 6-9 parts of calcium nitrate;

the second macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 17-20 parts of urea, 55-62 parts of potassium nitrate, 6-9 parts of monoammonium phosphate, 2-5 parts of ammonium polyphosphate, 2-4 parts of zinc sulfate and 5-8 parts of boric acid;

the third macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 28-30 parts of urea, 50-55 parts of potassium nitrate, 4-6 parts of monoammonium phosphate, 4-7 parts of ammonium polyphosphate, 2-5 parts of zinc sulfate and 3-6 parts of boric acid;

the humic acid-containing water soluble fertilizer comprises the following raw materials in parts by weight: 60-72 parts of potassium fulvate, 14-18 parts of urea and 14-17 parts of potassium nitrate;

the microelement water-soluble fertilizer comprises the following raw materials in parts by weight: 22-27 parts of zinc sulfate monohydrate, 70-78 parts of boric acid, 3-5 parts of sodium citrate and 2-3 parts of ammonium polyphosphate.

Preferably, the humic acid-containing water-soluble fertilizer is a granular water-soluble fertilizer, and the grain size is 5-7 mm; the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer or the microelement water-soluble fertilizer are powdery water-soluble fertilizers.

The invention also provides an application method of the facility cucumber whole growth period water-soluble fertilizer in the scheme, which comprises the following steps:

1) in the seedling stage of the cucumber, applying a first macroelement water-soluble fertilizer and a humic acid-containing water-soluble fertilizer; the application frequency of the first macroelement water-soluble fertilizer is 1-2 times, and the application amount of each time is 8-10 kg/mu; the application frequency of the humic acid-containing water-soluble fertilizer is 1-2 times, and the application amount of each time is 2-5 kg/mu;

2) in the flowering and cucumber-sitting period of the cucumbers, a first macroelement water-soluble fertilizer and a microelement water-soluble fertilizer are applied; the application frequency of the first macroelement water-soluble fertilizer is 2-4 times, and the application amount of each time is 25-32 kg/mu; the application frequency of the trace element water-soluble fertilizer is 1-2 times, and the application amount of each time is 0.03-0.04 kg/mu

3) Applying a second macroelement water-soluble fertilizer and a humic acid-containing water-soluble fertilizer at the early cucumber bearing stage; the application frequency of the second macroelement water-soluble fertilizer is 3-5 times, and the application amount of each time is 35-43 kg/mu; the application frequency of the humic acid-containing water-soluble fertilizer is 1-2 times, and the application amount of each time is 5-8 kg/mu;

4) in the cucumber bearing season, a second macroelement water-soluble fertilizer and a microelement water-soluble fertilizer are applied; the application frequency of the second macroelement water-soluble fertilizer is 7-9 times, and the application amount of each time is 45-55 kg/mu; the application frequency of the trace element water-soluble fertilizer is 1-2 times, and the application amount of each time is 0.03-0.04 kg/mu;

5) in the late stage of cucumber bearing, a third macroelement water-soluble fertilizer is applied; the application frequency of the third macroelement water-soluble fertilizer is 1-3 times, and the application amount of each time is 10-18 kg/mu.

Preferably, the time interval between two fertilization of the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer and the third macroelement water-soluble fertilizer is independently 7-10 days.

Preferably, the application modes of the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer and the humic acid-containing water-soluble fertilizer are independent and comprise drip irrigation or flushing application along with water.

Preferably, the application mode of the microelement water-soluble fertilizer is spraying.

The invention also provides application of the facility cucumber whole growth period water soluble fertilizer in facility cucumber cultivation.

Preferably, the application comprises increasing cucumber yield and/or improving cucumber quality and/or increasing soil nitrogen and phosphorus content and/or reducing nitrogen and phosphorus loss and/or improving soil microbial environment.

Preferably, the improvement of cucumber quality comprises improving the vitamin C content of cucumber and/or improving the sugar degree of cucumber.

The invention has the beneficial effects that: the invention provides a facility cucumber whole growth period water-soluble fertilizer, which comprises the following independently packaged fertilizers: the fertilizer comprises a first macroelement water-soluble fertilizer, a second macroelement water-soluble fertilizer, a third macroelement water-soluble fertilizer, a humic acid-containing water-soluble fertilizer and a microelement water-soluble fertilizer. Compared with the prior art, the invention has the following advantages:

1. the nutrient proportion of the water-soluble fertilizer for the protected cucumber in the whole growth period accords with the fertilizer requirement characteristics and the absorption rule of the cucumber in different growth periods, the nutrient loss rate can be reduced, and the stress resistance of the cucumber is improved. Specifically, the cucumber growth method comprises the following steps of comparing the growth period of cucumber with that of cucumber N: p₂O₅：K₂The water soluble fertilizer for the whole growth period of the greenhouse cucumber obtained by the characteristics of the absorption proportion of O and the preference of nitrate nitrogen of the cucumber meets the requirements of different growth periods N: p₂O₅：K₂The proportion of O, three nitrogen forms of amide, nitrate nitrogen and ammonium nitrogen, two phosphorus forms of polyphosphate radical and phosphate radical, and different proportions of the nitrogen and the phosphorus can reduce the nitrogen loss by 15.0-27.6 percent and the phosphorus loss by 11.0-12.3 percent.

2. The humic acid-containing water-soluble fertilizer in the facility cucumber whole growth period water-soluble fertilizer can solve the problem of reduced root activity caused by low temperature weak light and high humidity in facility cucumber cultivation, can delay root senescence and improve yield. The ammonium polyphosphate is adopted as a raw material in the major elements, so that the form of nitrogen and phosphorus can be changed, and the ammonium polyphosphate has the function of chelating medium and trace elements and has the function of improving the utilization rate of the medium and trace elements. The trace element water-soluble fertilizer adopts sodium citrate and ammonium polyphosphate as chelating agents, the chelating capacity is higher than that of a single chelating agent under the same dosage, the chelating rate is improved by 25.8%, and the utilization rate of trace elements is improved.

3. The water-soluble fertilizer for the whole growth period of the cucumber under the greenhouse combines organic nutrients and inorganic nutrients, has more reasonable proportion of large, medium and trace elements, and has important effects on adjusting nitrogen and phosphorus in soil, promoting balanced supply of soil nutrients, improving the utilization rate of the fertilizer, reducing loss, increasing yield and improving quality.

4. The water-soluble fertilizer for the protected cucumber in the whole growth period has low content of water-insoluble substances, can improve the water solubility of the product, reduce the residue amount of the product after water dissolution, and avoid the occurrence of blockage. The invention adopts the magnesium sulfate monohydrate powder as the raw material, and utilizes the slow water absorption of the magnesium sulfate monohydrate to prevent the surface of the fertilizer from absorbing water, thereby playing a role in preventing caking. The water-soluble fertilizer for the protected cucumbers in the whole growth period does not have the phenomena of deliquescence, caking, excessive impurities, excessive content of water-insoluble substances, flatulence and the like, and is favorable for selling and applying the water-soluble fertilizer.

Detailed Description

The invention provides a facility cucumber whole growth period water-soluble fertilizer, which comprises the following independently packaged fertilizers: a first macroelement water-soluble fertilizer, a second macroelement water-soluble fertilizer, a third macroelement water-soluble fertilizer, a humic acid-containing water-soluble fertilizer and a microelement water-soluble fertilizer; the ratio of the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer, the humic acid-containing water-soluble fertilizer and the trace element water-soluble fertilizer is not particularly limited, and is based on the application amount of practical application.

In the invention, the first macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 14-15 parts of urea, 28-31 parts of potassium nitrate, 30-33 parts of monoammonium phosphate, 8-12 parts of ammonium polyphosphate, 4-6 parts of magnesium sulfate monohydrate and 6-9 parts of calcium nitrate; preferably, the first macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 14.5 parts of urea, 29-30 parts of potassium nitrate, 31-32 parts of monoammonium phosphate, 10 parts of ammonium polyphosphate, 5 parts of magnesium sulfate monohydrate and 7-8 parts of calcium nitrate.

In the invention, the second macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 17-20 parts of urea, 55-62 parts of potassium nitrate, 6-9 parts of monoammonium phosphate, 2-5 parts of ammonium polyphosphate, 2-4 parts of zinc sulfate and 5-8 parts of boric acid; preferably, the second macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 18-19 parts of urea, 58-60 parts of potassium nitrate, 7-8 parts of monoammonium phosphate, 3-4 parts of ammonium polyphosphate, 3 parts of zinc sulfate and 6-7 parts of boric acid.

In the invention, the third macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 28-30 parts of urea, 50-55 parts of potassium nitrate, 4-6 parts of monoammonium phosphate, 4-7 parts of ammonium polyphosphate, 2-5 parts of zinc sulfate and 3-6 parts of boric acid; preferably, the third macroelement water-soluble fertilizer comprises the following raw materials in parts by weight: 29 parts of urea, 52-54 parts of potassium nitrate, 5 parts of monoammonium phosphate, 5-6 parts of ammonium polyphosphate, 3-4 parts of zinc sulfate and 4-5 parts of boric acid.

The first, second and third macroelement water-soluble fertilizers all adopt ammonium polyphosphate as raw materials, so that the form of nitrogen and phosphorus can be changed, and the ammonium polyphosphate has the function of chelating medium and trace elements and has the effect of improving the utilization rate of the medium and trace elements.

In the invention, the trace element water-soluble fertilizer comprises the following raw materials in parts by weight: 22-27 parts of zinc sulfate monohydrate, 70-78 parts of boric acid, 3-5 parts of sodium citrate and 2-3 parts of ammonium polyphosphate; preferably, the water-soluble fertilizer containing the trace elements comprises the following raw materials in parts by weight: 22-27 parts of zinc sulfate monohydrate, 70-78 parts of boric acid, 3-5 parts of sodium citrate and 2-3 parts of ammonium polyphosphate.

The trace element water-soluble fertilizer adopts sodium citrate and ammonium polyphosphate as chelating agents, the chelating capacity is higher than that of a single chelating agent under the same dosage, and the utilization rate of trace elements can be improved.

In the invention, the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer or the microelement water-soluble fertilizer are preferably powdery water-soluble fertilizers; the preparation method of the powdery water-soluble fertilizer is not particularly limited, and the conventional method in the field is adopted.

In the invention, the humic acid-containing water-soluble fertilizer comprises the following raw materials in parts by weight: 60-72 parts of potassium fulvate, 14-18 parts of urea and 14-17 parts of potassium nitrate; preferably, the humic acid-containing water-soluble fertilizer comprises the following raw materials in parts by weight: 65-70 parts of potassium fulvate, 15-17 parts of urea and 15-16 parts of potassium nitrate; the humic acid-containing water-soluble fertilizer is preferably a granular water-soluble fertilizer, more preferably a flat spherical granular water-soluble fertilizer, and can be prepared into a granular water-soluble fertilizer, so that the humic acid-containing water-soluble fertilizer can be prevented from absorbing moisture and agglomerating; the particle size of the humic acid-containing water-soluble fertilizer is preferably 5-7 mm, and more preferably 6 mm; the water content of the humic acid-containing water-soluble fertilizer is preferably less than or equal to 3.0 percent; the humic acid-containing water-soluble fertilizer is preferably prepared by the following method: mixing potassium fulvate, urea and potassium nitrate, and granulating to obtain a humic acid-containing water-soluble fertilizer; the mixing method is not particularly limited, and the uniform mixing is taken as the standard; the granulation method of the present invention is not particularly limited, and a conventional method in the art may be used.

The humic acid-containing water-soluble fertilizer has the effects of promoting roots and resisting stress, can delay root senescence and improves yield.

In the specific implementation process of the invention, in the raw materials of the water-soluble fertilizer for the whole growth period of the cucumber under the protected cultivation, the urea is an agricultural first-class product (N is more than or equal to 46.2%), and the potassium nitrate is an agricultural high-class product (K)₂O≥46％、H₂O is less than or equal to 0.5 percent, and potassium dihydrogen phosphate is superior (K)₂O≥33.8％、P₂O₅≥51％、H₂O is less than or equal to 0.5 percent), and the ammonium polyphosphate is purchased from Jinzheng ecological engineering group Limited company (the production takes phosphoric acid and phosphorus tailings as raw materials, N is more than or equal to 18 percent, and P is₂O₅Not less than 60 percent), the magnesium sulfate monohydrate is powdery (the water-soluble Mg is not less than 15 percent, the water-soluble S is not less than 19.5 percent), the calcium nitrate is an agricultural first-class product (the nitrate nitrogen is not less than 11.5 percent, the water-soluble Ca is not less than 16 percent, the content of water-insoluble substances is not more than 0.5 percent), the zinc sulfate is an agricultural zinc sulfate monohydrate superior product (the Zn is not less than 35.3 percent), and the monoammonium phosphate is an agricultural powdery slurry method superior product (11-47-0, the N is not less than 10 percent₂O₅≥46％、H₂O is less than or equal to 3.0 percent), and boric acid is first-grade product (H) for industry₃BO₃The content is more than or equal to 99.4-100.8 percent, the content of water insoluble substances is less than or equal to 0.04 percent, and the sodium citrate meets the national food safety standard GB1886.25-2016 (the content of sodium citrate is more than or equal to 99.0-100.5 percent, and H is less than or equal to H)₂O is less than or equal to 10 to 13.0 percent); the potassium fulvate is produced by Jinzheng ecological engineering group, Ltd (the content of fulvic acid is 40%, and the content of potassium oxide is 8%).

The water soluble fertilizer for the protected cucumber in the whole growth period is preferably prepared by the following method: mixing the independently packaged first macroelement water-soluble fertilizer, second macroelement water-soluble fertilizer, third macroelement water-soluble fertilizer, humic acid-containing water-soluble fertilizer and microelement water-soluble fertilizer to obtain the water-soluble fertilizer for the whole growth period of the cucumber under the protected cultivation condition; the packaging bag of the packaging bag is not particularly limited, and the packaging bag can be a conventional packaging bag in the field.

The invention also provides an application method of the facility cucumber whole growth period water-soluble fertilizer in the scheme, which comprises the following steps:

1) in the seedling stage of the cucumber, applying a first macroelement water-soluble fertilizer and a humic acid-containing water-soluble fertilizer; the application frequency of the first macroelement water-soluble fertilizer is 1-2, and the application amount of each application is 8-10 kg/mu, preferably 9 kg/mu; the application frequency of the humic acid-containing water-soluble fertilizer is 1-2 times, and the application amount of each time is 2-5 kg/mu, preferably 3-4 kg/mu;

2) in the flowering and cucumber-sitting period of the cucumbers, a first macroelement water-soluble fertilizer and a microelement water-soluble fertilizer are applied; the application frequency of the first macroelement water-soluble fertilizer is 2-4 times, preferably 3 times, and the application amount of each time is 25-32 kg/mu, preferably 28-30 kg/mu; the application frequency of the trace element water-soluble fertilizer is 1-2 times, and the application amount of each time is 0.03-0.04 kg/mu;

3) applying a second macroelement water-soluble fertilizer and a humic acid-containing water-soluble fertilizer at the early cucumber bearing stage; the application frequency of the second macroelement water-soluble fertilizer is 3-5 times, preferably 4 times, and the application amount of each time is 35-43 kg/mu, preferably 38-40 kg/mu; the application frequency of the humic acid-containing water-soluble fertilizer is 1-2 times, and the application amount of each time is 5-8 kg/mu, preferably 6-7 kg/mu;

4) in the cucumber bearing season, a second macroelement water-soluble fertilizer and a microelement water-soluble fertilizer are applied; the application frequency of the second macroelement water-soluble fertilizer is 7-9 times, preferably 8 times, and the application amount of each time is 45-55 kg/mu, preferably 48-52 kg/mu; the application frequency of the trace element water-soluble fertilizer is 1-2 times, and the application amount of each time is 0.03-0.04 kg/mu;

5) in the late stage of cucumber bearing, a third macroelement water-soluble fertilizer is applied; the application frequency of the third macroelement water-soluble fertilizer is 1-3 times, preferably 2 times, and the application amount of each time is 10-18 kg/mu, preferably 12-15 kg/mu.

In the invention, the two fertilization intervals of the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer and the third macroelement water-soluble fertilizer are independently preferably 7-10 d, and more preferably 8-9 d; the application modes of the first macroelement water-soluble fertilizer, the second macroelement water-soluble fertilizer, the third macroelement water-soluble fertilizer and the humic acid-containing water-soluble fertilizer are independent and comprise drip irrigation or flushing application along with water; the application mode of the microelement water-soluble fertilizer is preferably spraying.

The invention also provides the application of the facility cucumber whole growth period water soluble fertilizer in facility cucumber cultivation; the application preferably comprises the improvement of cucumber yield and/or cucumber quality and/or the improvement of soil nitrogen and phosphorus content and/or the reduction of nitrogen and phosphorus loss and/or the improvement of soil microbial environment; preferably, the improvement of the cucumber quality comprises the improvement of the vitamin C content of the cucumber and/or the improvement of the sugar degree of the cucumber.

The technical solutions provided by the present invention are described in detail below with reference to examples, but they should not be construed as limiting the scope of the present invention.