阅读说明：本技术 一种高钙含量中量元素水溶肥料及制备方法 (high-calcium-content medium-element water-soluble fertilizer and preparation method thereof ) 是由 王仁宗 于 2019-11-27 设计创作，主要内容包括：本发明公开了一种高钙含量中量元素水溶肥料及制备方法,全水溶悬浮钙肥由下述重量份的原料制成：EDTA 1.0～3.0份、硼酸0.4～0.8份、无水硫酸铜0.1～0.2份、氯化锰0.2～0.5份、氯化锌0.1～0.3份、钼酸钠0.001～0.005份、氢氧化钾0.5～3.0份、尿素3～8份、氯化镁7～10份、甲酸钙3～6份、硝酸铵钙50～65份、氯化亚铁0.1～0.4份、稳定剂3～6份、表面活性剂0.02～0.06份、增稠剂4.0～8.0份、水10～12份。本发明通过加料顺序、反应条件等工艺控制及增稠剂、稳定剂等添加剂的选择,能够使极高含量钙和微量元素同时稳定地存在于液相中,可实现极高钙和微量元素的同补。在突出钙的同时兼顾了其它营养元素,有效防止单一施肥带来的元素之间的拮抗问题。(The invention discloses high-calcium-content medium-element water-soluble fertilizers and a preparation method thereof, wherein the full-water-soluble suspended calcium fertilizer is prepared from the following raw materials, by weight, 1.0-3.0 parts of EDTA (ethylene diamine tetraacetic acid), 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous copper sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001-0.005 part of sodium molybdate, 0.5-3.0 parts of potassium hydroxide, 3-8 parts of urea, 7-10 parts of magnesium chloride, 3-6 parts of calcium formate, 50-65 parts of calcium ammonium nitrate, 0.1-0.4 part of ferrous chloride, 3-6 parts of a stabilizer, 0.02-0.06 part of a surfactant, 4.0-8.0 parts of a thickener and 10-12 parts of water, and the invention can stably exist in a fertilizing solution with extremely high calcium content and trace elements and can prevent the problem of effective calcium antagonism.)

1. high-calcium-content medium-element water-soluble fertilizer, which is characterized by being prepared from the following raw materials, by weight, 1.0-3.0 parts of Ethylene Diamine Tetraacetic Acid (EDTA), 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous copper sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001-0.005 part of sodium molybdate, 0.5-3.0 parts of potassium hydroxide, 3-8 parts of urea, 7-10 parts of magnesium chloride, 3-6 parts of calcium formate, 50-65 parts of calcium ammonium nitrate, 0.1-0.4 part of ferrous chloride, 3-6 parts of stabilizer, 0.02-0.06 part of surfactant, 4.0-8.0 parts of thickener and 10-12 parts of water.

2. The high-calcium medium-element water-soluble fertilizer according to claim 1, wherein the thickener is a combination of xanthan gum, sodium carboxymethylcellulose and polyethylene oxide.

3. The kinds of high-calcium medium-element water-soluble fertilizer as claimed in claim 2, wherein the weight ratio of said thickening agent is xanthic acid, sodium carboxymethyl cellulose, polyoxyethylene-5: 3: 2.

4. The kinds of high-calcium medium-element water-soluble fertilizer as claimed in claim 1, wherein the stabilizer is a combination of sugar alcohol, maltose syrup and hydroxylamine hydrochloride.

5. The high-calcium medium-element water-soluble fertilizer as claimed in claim 4, wherein the stabilizer composition is prepared from sugar alcohol, maltose syrup, hydroxylamine hydrochloride and water in a weight ratio of 4:5: 1.

6. The kinds of high-calcium-content medium-element water-soluble fertilizer as claimed in claim 1, wherein the surfactant is or more of tetradecyltrimethylammonium chloride, hexadecyltrimethylammonium chloride, octadecyltrimethylammonium chloride, triethanolamine sulfonate, lignosulfonate, tween and fatty alcohol-polyoxyethylene ether.

7. The method for preparing kinds of high-calcium medium-element water-soluble fertilizers according to claim 1, characterized by comprising the following steps:

1) adding 1.0-3.0 parts of EDTA into 8-10 parts of water, heating to 40-60 ℃ under a stirring state, then sequentially adding 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous copper sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001-0.005 part of sodium molybdate, 0.5-3.0 parts of potassium hydroxide and 3-8 parts of urea, and carrying out chelation reaction for 1.5-2.5 hours under a stirring state to obtain a suspension A;

2) continuously stirring the suspension A, sequentially adding 0.1-0.3 part of water, 7-10 parts of magnesium chloride, 3-6 parts of calcium formate and 50-65 parts of calcium ammonium nitrate, and carrying out chelation reaction for 1.5-2.5 hours at the reaction temperature of 40-60 ℃ to obtain a suspension B;

3) continuously adding 0.1-0.3 part of water, 0.1-0.4 part of ferrous chloride, 3-6 parts of stabilizer and 0.02-0.06 part of surfactant into the suspension B in sequence under the stirring state, carrying out chelation reaction for 1.5-2.5 hours at the reaction temperature of 40-60 ℃ to obtain suspension C;

4) adding the balance of water and 4.0-8.0 parts of thickening agent into the suspension C under the stirring state, and grinding for 1.5-3 hours in a colloid mill; thus obtaining the water-soluble fertilizer with high calcium content and medium elements.

Technical Field

The invention belongs to the field of crop nutrition preparations, and particularly relates to medium-element water-soluble fertilizers with extremely high calcium content and a preparation method thereof.

Background

The fertilizer is indispensable for promoting plant growth and increasing crop yield, is material support and is also an important condition for agricultural production development , China is of countries with large agricultural fertilizer consumption in the world, at present, the common fertilizer in the market is a high-concentration solid fertilizer with single component , such as urea, nitrophosphate and the like, the fertilizer can only provide a large amount of nutrient elements such as nitrogen, phosphorus, potassium and the like, and almost does not contain medium elements and trace elements, so that the lodging resistance and insect pest resistance of crops are low, the yield of crops is easy to be reduced, in addition, the fertilizer leaching loss is serious, the absorption and utilization rate of the fertilizer is reduced, in recent years, the use of a large amount of various fertilizers, such as nitrogen fertilizer, phosphorus fertilizer and potassium fertilizer which are used for a large amount, the soil acidification, hardening and soil deep pollution are caused, the produced various grains, vegetables, fruits and the like cannot meet the requirements of green organic food, the potential hazards brought to human health are brought, the use of a large amount of various fertilizers also pollutes underground water, lakes and rivers, the ecological balance is damaged, the vicious circle of environmental pollution is caused, how to balance fertilization, and how to protect the agricultural production is a challenge.

With the continuous push and application of a water and fertilizer technology, liquid fertilizers begin to be gradually popularized in China, at present, liquid fertilizers in China are still in a preliminary research stage, particularly the research on high-concentration and high-compound suspended fertilizers, and are basically blank in China.

The crops in China are particularly easy to absorb the metal chelate because the metal chelate is quite stable, and the stable factor of the metal chelate is determined by the size and the number of chelate rings.

Japanese patent No. P2000-193894 relates to preparation of high-concentration elemental calcium fertilizer, but the component is , and magnesium, zinc, boron and surfactant are not contained, patent No. CN102701800A, preparation technology of super-active full water-soluble calcium boron fertilizer relates to calcium boron fertilizer, but calcium in raw materials exists in ionic state, absorption efficiency is obviously affected, patent No. CN102503657A and patent No. CN101318861A both relate to preparation of calcium boron foliar fertilizer, boron content in foliar fertilizer prepared in aspect is low, calcium boron in aspect can not be mixed in various proportions, and magnesium and zinc nutrient elements are not contained, so that absorption of different crops to different nutrients can not be met, patent No. CN103159531A, liquid fertilizer chelated by various phytols and medium and trace elements and preparation method thereof, although medium and trace elements are contained, nutrient content is low, so that production cost and packaging cost are high, patent No. CN103588564A discloses sugar alcohol calcium magnesium zinc boron compound liquid fertilizer and preparation method and application thereof, although medium and trace elements calcium, magnesium, zinc and boron are contained, content is increased, but nitrogen, copper, molybdenum, manganese, molybdenum and molybdenum are not contained.

Disclosure of Invention

In order to overcome the defects and shortcomings of the prior art, the invention aims to provide high-calcium-content medium-element water-soluble fertilizers and a preparation method thereof, wherein the high-calcium-content medium-element water-soluble fertilizers are nitrogen, copper, manganese, molybdenum, magnesium, boron, iron and zinc composite suspended fertilizers are balanced in nutrients, the concentration of calcium, nitrogen, copper, manganese, magnesium, boron, iron and zinc in the composite suspended liquid fertilizers is improved through technical improvement, raw material selection and the like, different mixing ratios of calcium, copper, manganese, magnesium, boron, iron and zinc are increased, the obtained calcium is more than or equal to 188g/L, nitrogen is more than or equal to 160g/L, EDTA-copper is more than or equal to 0.6g/L, EDTA-manganese is more than or equal to 1.6g/L, molybdenum is more than or equal to 0.02g/L, magnesium is more than or equal to 18g/L, boron is more than or equal to 1.6g/L, EDTA-iron is more than or equal to 0.8 g/L.

The technical scheme adopted by the invention is as follows:

high-calcium-content medium-element water-soluble fertilizer is characterized by being prepared from the following raw materials, by weight, 1.0-3.0 parts of Ethylene Diamine Tetraacetic Acid (EDTA), 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous copper sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001-0.005 part of sodium molybdate, 0.5-3.0 parts of potassium hydroxide, 3-8 parts of urea, 7-10 parts of magnesium chloride, 3-6 parts of calcium formate, 50-65 parts of calcium ammonium nitrate, 0.1-0.4 part of ferrous chloride, 3-6 parts of a stabilizer, 0.02-0.06 part of a surfactant, 4.0-8.0 parts of a thickener and 10-12 parts of water.

The thickening agent is a composition of xanthan gum, sodium carboxymethylcellulose and polyethylene oxide, and the thickening agent composition comprises the following components in percentage by weight: sodium carboxymethylcellulose: polyoxyethylene ═ 5:3: 2.

The stabilizer is a composition of sugar alcohol, maltose syrup and hydroxylamine hydrochloride. The stabilizer composition comprises the following components in percentage by weight: sugar alcohol: maltose syrup: hydroxylamine hydrochloride is 4:5: 1.

The surfactant is or mixture of more than two of tetradecyl trimethyl ammonium chloride, hexadecyl trimethyl ammonium chloride, octadecyl trimethyl ammonium chloride, triethanolamine sulfonate, lignosulfonate, tween and fatty alcohol-polyoxyethylene ether.

preparation method of high-calcium-content medium-element water-soluble fertilizer, which is characterized by comprising the following steps:

1) adding 1.0-3.0 parts of EDTA into 8-10 parts of water, heating to 40-60 ℃ under a stirring state, then sequentially adding 0.4-0.8 part of boric acid, 0.1-0.2 part of anhydrous copper sulfate, 0.2-0.5 part of manganese chloride, 0.1-0.3 part of zinc chloride, 0.001-0.005 part of sodium molybdate, 0.5-3.0 parts of potassium hydroxide and 3-8 parts of urea, and carrying out chelation reaction for 1.5-2.5 hours under a stirring state to obtain a suspension A;

2) continuously stirring the suspension A, sequentially adding 0.1-0.3 part of water, 7-10 parts of magnesium chloride, 3-6 parts of calcium formate and 50-65 parts of calcium ammonium nitrate, and carrying out chelation reaction for 1.5-2.5 hours at the reaction temperature of 40-60 ℃ to obtain a suspension B;

3) continuously adding 0.1-0.3 part of water, 0.1-0.4 part of ferrous chloride, 3-6 parts of stabilizer and 0.02-0.06 part of surfactant into the suspension B in sequence under the stirring state, carrying out chelation reaction for 1.5-2.5 hours at the reaction temperature of 40-60 ℃ to obtain suspension C;

4) adding the balance of water and 4.0-8.0 parts of thickening agent into the suspension C under the stirring state, and grinding for 1.5-3 hours in a colloid mill; thus obtaining the water-soluble fertilizer with high calcium content and medium elements.

The product of the invention is characterized in that:

1) the high-calcium-content medium-element water-soluble fertilizer is a full-water-soluble suspended calcium fertilizer, has extremely high effective calcium content, and has good prevention and correction effects on physiological calcium deficiency phenomena of crops, such as fruit cracking, bitter pox, head-vegetable dry burning and the like.

2) The fertilizer has balanced nutrients, gives consideration to other nutrient elements while highlighting calcium, and effectively prevents the problem of antagonism among elements caused by single fertilization.

3) The magnesium and manganese effectively prevent the problem of leaf falling caused by excessive calcium fertilizer.

4) The boron, manganese and zinc can improve the absorption of calcium and the movement in the plant body.

5) The trace elements are in a full-chelated state, are fully soluble in water, and have high absorption and conversion utilization rate.

6) Can be mixed with most of pesticide for application.

7) Is suitable for crops, vegetables, melons and fruits, and fruit trees; wheat, rice, corn, cotton, peanut, potato, sweet potato, sugar beet, sugar cane, etc.; tobacco, tea, medicinal materials, ginseng, fungus, sesame, beans and the like; flowers, lawns and other horticultural plants.

Detailed Description

The present invention is further described in detail with reference to the following examples, but the embodiments of the present invention are not limited thereto.