阅读说明：本技术 一种环保型草甘膦水剂及其制备方法 (Environment-friendly glyphosate aqueous solution and preparation method thereof ) 是由 丁绍武 张鹏 赵怀宁 刘卫旭 屈学宏 于 2021-01-22 设计创作，主要内容包括：本发明涉及一种环保型草甘膦水剂,按质量百分数计包括如下主要组分：草甘膦有效成分30-60％、硫酸铵2-8％、烷基糖苷2-10％、半夏水提取液补足100％；本发明采用的半夏水提液是一种天然绿色助剂,通过半夏水提液与其他辅助成分一起使用,有效提高了草甘膦的除草效果,具有良好的应用前景。(The invention relates to an environment-friendly glyphosate water agent, which comprises the following main components in percentage by mass: 30-60% of glyphosate active ingredient, 2-8% of ammonium sulfate, 2-10% of alkyl glycoside and 100% of pinellia ternate water extract; the pinellia ternate water extract adopted by the invention is a natural green auxiliary agent, and the pinellia ternate water extract and other auxiliary components are used together, so that the weeding effect of the glyphosate is effectively improved, and the application prospect is good.)

1. The synergistic additive of the glyphosate aqueous solution is characterized by comprising a pinellia ternate aqueous extract.

2. The method for preparing pinellia ternate water extract as claimed in claim 1, which is characterized by comprising the following steps:

pinellia ternata: water 1: (1-10), decocting at 80-90 deg.C for 1-3h, and removing residue to obtain rhizoma Pinelliae water extractive solution.

3. The method of claim 2, comprising the steps of:

pinellia ternata: water 1:5, decocting at 80-90 deg.C for 2 hr, and removing residue to obtain rhizoma Pinelliae water extractive solution.

4. The environment-friendly glyphosate water agent is characterized by comprising the following main components in percentage by mass: 30-60% of glyphosate active ingredient, 2-8% of ammonium sulfate, 2-10% of alkyl glycoside and the balance of pinellia ternate water extract to 100%.

5. The aqueous glyphosate formulation of claim 4 comprising the following major components in mass percent: 30-50% of glyphosate active ingredient, 3-6% of ammonium sulfate, 4-8% of alkyl glycoside and the balance of pinellia ternate water extract to 100%.

6. The pinellia ternate water extract as claimed in any one of claims 4 to 5, wherein the pinellia ternate water extract is the pinellia ternate water extract prepared in any one of claims 2 to 3.

7. A process for the preparation of aqueous glyphosate as claimed in any one of claims 4 to 5, comprising the steps of:

uniformly mixing the glyphosate bulk drug, ammonium sulfate, alkyl glycoside and pinellia ternate water extract in corresponding weight parts to prepare the environment-friendly glyphosate aqueous solution.

8. Use of an aqueous glyphosate formulation according to any one of claims 4 to 5 in agriculture.

9. The use of claim 8, wherein the aqueous glyphosate is agriculturally useful as a herbicide;

preferably, the application comprises the following steps: diluting the glyphosate aqueous solution with water and spraying the diluted glyphosate aqueous solution on weed leaves to avoid contacting crops; further preferably, the dilution factor is 100-200.

10. The use of claim 8 wherein the aqueous glyphosate is mixed with other herbicides for agricultural use;

preferably, the other herbicide is glufosinate-ammonium and/or diquat which is used for preventing and killing gramineous and broadleaf weeds in farmlands.

Technical Field

The invention belongs to the technical field of pesticide application, and particularly relates to an environment-friendly glyphosate aqueous solution and a preparation method thereof.

Background

The plant source pesticide synergist can improve the spreading, penetration and transmission performance of pesticide liquid, raise the bioactivity of pesticide, prolong the effective period of pesticide and raise the utilization rate of pesticide. The main component of the plant-derived pesticide synergist is composed of natural substances, so that the plant-derived pesticide synergist can be effectively degraded when applied to the growth process of crops, and can not cause serious adverse effect on the ecological environment.

The current glyphosate water agent mainly comprises the following synergists: tallow amine ethoxylates, fatty alcohol-polyoxyethylene ethers, silicones, and other compounds. However, the existing glyphosate aqueous synergist product has the problems of unobvious synergistic effect, high toxicity, high residue of the aqueous synergist, difficult degradation, environmental friendliness, poor compatibility of the synergist and the preparation product, and even influence on the physicochemical property of the pesticide preparation, so that the aqueous preparation product is layered and flocculent insoluble substances appear.

Ban Xia is a commonly used Chinese herb ingredient with the function of directing qi movement downward, so it is often used as a medicine for lowering adverse qi and relieving asthma and as a guiding drug for guiding the medicine downward.

Chinese patent document CN104351273A (application number: 201410514619.4) discloses a blueberry professional herbicide and a preparation method thereof, wherein the blueberry professional herbicide comprises the following formula components in parts by mass: 15-17 parts of motherwort herb injection, 15-18 parts of astragalus powder, 12-14 parts of pinellia tuber injection, 7-9 parts of diuron, 6-8 parts of chlorphenamine, 7-10 parts of blepharon, 5-7 parts of glyphosate, 2-3 parts of oxyfluorfen, 4-8 parts of simazine and 20-30 parts of water; the formula related by the invention has the advantages of complex composition, high cost and small application range.

Chinese patent document CN109380389A (application number: 201710689507.6) discloses a summer and autumn Chinese cabbage herbicide and a preparation method thereof, wherein the herbicide comprises the following components in parts by mass: 10-15 parts of sodium chlorate, 4-8 parts of mefenacet, 6-9 parts of glyphosate, 2-5 parts of atrazine, 3-6 parts of acetochlor, 2-4 parts of sorbitan monooleate, 1-3 parts of broadleaf powder, 5-10 parts of pinellia ternate, 4-8 parts of pepper extract, 3-5 parts of chinaberry extract and 200 parts of ethanol 100-one.

Disclosure of Invention

Aiming at the defects of the prior art, the invention provides an environment-friendly glyphosate aqueous solution and a preparation method thereof.

The environment-friendly glyphosate aqueous solution provided by the invention is green and safe, has good absorption conductivity, and has the characteristics of high efficiency, low cost, high environmental and biological safety and the like.

The pinellia ternate is applied to the field of agricultural plant protection, and experiments prove that the pinellia ternate can promote the conduction of glyphosate to the roots of weeds, accelerate the weeding speed and improve the root removing effect.

The technical scheme of the invention is as follows

A synergistic adjuvant for glyphosate aqua comprises rhizoma Pinelliae water extractive solution.

An environment-friendly glyphosate water agent comprises the following main components in percentage by mass: 30-60% of glyphosate active ingredient, 2-8% of ammonium sulfate, 2-10% of alkyl glycoside and the balance of pinellia ternate water extract to 100%.

According to the preferable selection of the invention, the environment-friendly glyphosate aqueous solution comprises the following main components in percentage by mass: 30-50% of glyphosate active ingredient, 3-6% of ammonium sulfate, 4-8% of alkyl glycoside and the balance of pinellia ternate water extract to 100%.

The preparation method of the pinellia ternate water extract comprises the following steps:

pinellia ternata: water 1: (1-10), decocting at 80-90 deg.C for 1-3h, and removing residue to obtain rhizoma Pinelliae water extractive solution.

According to the invention, the preparation method of the pinellia ternate water extract comprises the following steps:

pinellia ternata: water 1:5, decocting at 80-90 deg.C for 2 hr, and removing residue to obtain rhizoma Pinelliae water extractive solution.

The preparation method of the environment-friendly glyphosate water agent comprises the following steps:

uniformly mixing the glyphosate bulk drug, ammonium sulfate, alkyl glycoside and pinellia ternate water extract in corresponding weight parts to prepare the environment-friendly glyphosate aqueous solution.

The environment-friendly glyphosate aqueous solution is applied to agriculture.

According to the invention, the glyphosate water agent is preferably used as a herbicide in agriculture.

According to the preferable application method of the glyphosate aqueous solution, the application method comprises the following steps:

diluting the glyphosate aqueous solution with water and spraying the diluted glyphosate aqueous solution on weed leaves to avoid contacting crops; further preferably, the dilution factor is 100-200.

According to the invention, the glyphosate aqueous solution is preferably mixed with other herbicides to be applied in agriculture; further preferably, the other herbicide is glufosinate-ammonium and/or diquat and is used for preventing and killing gramineous and broadleaf weeds in farmlands.

The technical scheme of the invention has the beneficial effects

The pinellia ternate water extract adopted by the invention is a natural green auxiliary agent, and the pinellia ternate water extract and other auxiliary components are used together, so that the weeding effect of the glyphosate is effectively improved, and the application prospect is good.

Detailed Description

The technical solution of the present invention is further described with reference to the following examples, but the scope of the present invention is not limited thereto. Reagents and medicines involved in the examples are all common commercial products unless otherwise specified; the experimental procedures referred to in the examples are those conventional in the art unless otherwise specified.

Sources of materials

Glyphosate acid (glyphosate acid is also called glyphosate) and ammonium, isopropylamine salts: purchased from Xinan chemical Co., Ltd, Zhejiang, and is a common commercial product;

ammonium sulfate: is a common commercial product;

alkyl glycoside: purchased from Qianqi chemical Co., Ltd, Jiangsu, and is a common commercial product;

pinellia ternata: the medicinal materials are purchased in the market and are common products sold in the market;

and (3) Chinaberry fruit: the medicinal materials are purchased in the market and are common products sold in the market;

potassium hydroxide: is a common commercial product.

Example 1

An environment-friendly glyphosate aqueous solution comprises the following components in percentage by mass:

33% glyphosate ammonium salt aqueous solution

The preparation method of the environment-friendly glyphosate water agent comprises the following steps:

pinellia ternata: mixing water at a ratio of 1:2, decocting at 80-90 deg.C for 2 hr, filtering to remove residue, and making into rhizoma Pinelliae water extractive solution.

Preparing 1000g of 33% ammonium glyphosate water: in a 2000ml flask, 553g of pinellia ternate water extract, 347 g of ammonium glyphosate technical product (with the content of 95 percent), 30g of ammonium sulfate and 70g of alkyl glycoside are sequentially added; stirring for 30 minutes to obtain the 33 percent ammonium glyphosate aqueous solution.

Example 2

An environment-friendly glyphosate aqueous solution comprises the following components in percentage by mass:

41% glyphosate isopropylamine salt aqueous solution

The preparation method of the environment-friendly glyphosate water agent comprises the following steps:

pinellia ternata: mixing water at a ratio of 1:5, decocting at 80-90 deg.C for 2 hr, filtering to remove residue, and making into rhizoma Pinelliae water extractive solution.

Preparing 1000g of 41% glyphosate isopropylamine salt water agent: in a 2000ml flask, adding 260g of pinellia ternate water extract, 660 g of glyphosate isopropylamine salt original drug (content is 62%), 40g of ammonium sulfate and 40g of alkyl glycoside in sequence; stirring for 25 minutes to obtain the 41 percent ammonium glyphosate aqueous solution.

Example 3

An environment-friendly glyphosate aqueous solution comprises the following components in percentage by mass:

50% glyphosate potassium salt water agent

The preparation method of the environment-friendly glyphosate water agent comprises the following steps:

pinellia ternata: mixing water at a ratio of 1:8, decocting at 80-90 deg.C for 2 hr, filtering to remove residue, and making into rhizoma Pinelliae water extractive solution.

Preparing 1000g of 50% glyphosate potassium salt water: 368g of pinellia ternate water extract, 427 g of glyphosate technical product (content is 95%) and 145g of potassium hydroxide are sequentially added into a 2000ml flask, stirred and reacted for 30 minutes, and then 30g of ammonium sulfate and 30g of alkyl glycoside are added; stirring for 30 minutes to obtain the 50 percent glyphosate potassium salt aqua.

Comparative example 1

The process is different from example 1 in that deionized water is used instead of the pinellia ternate aqueous extract, and the process is the same.

Comparative example 2

The difference from example 2 is that the alkyl glycoside is replaced by a corresponding amount of tallow amine polyether, all other things being equal.

The glyphosate water agent comprises the following components in percentage by mass:

41% glyphosate isopropylamine salt aqueous solution

The preparation method of the glyphosate water agent comprises the following steps:

pinellia ternata: mixing water at a ratio of 1:5, decocting at 80-90 deg.C for 2 hr, filtering to remove residue, and making into rhizoma Pinelliae water extractive solution.

Preparing 1000g of 41% glyphosate isopropylamine salt water agent: in a 2000ml flask, adding 260g of pinellia ternate water extract, 660 g of glyphosate isopropylamine salt original drug (content is 62%), 40g of ammonium sulfate and 40g of tallow amine polyether in sequence; stirring for 25 minutes to obtain the 41 percent ammonium glyphosate aqueous solution.

Comparative example 3

The difference from example 3 is that the same applies to the corresponding amount of aqueous extract of Melia azedarach, instead of the aqueous extract of pinellia ternata.

The glyphosate water agent comprises the following components in percentage by mass:

50% glyphosate potassium salt water agent

The preparation method of the glyphosate water agent comprises the following steps:

the preparation method comprises the following steps of (by weight ratio): mixing water at a ratio of 1:8, decocting at 80-90 deg.C for 2 hr, filtering to remove residue, and making into water extract of Melia azedarach L.

Preparing 1000g of 50% glyphosate potassium salt water: in a 2000ml flask, 368g of chinaberry water extract, 427 g of glyphosate technical (content 95%) and 145g of potassium hydroxide are sequentially added, stirred and reacted for 30 minutes, and then 30g of ammonium sulfate and 30g of alkyl glycoside are added; stirring for 30 minutes to obtain the 50 percent glyphosate potassium salt aqua.

Application example

Experiment of field drug effect

Reagent to be tested: agents prepared in examples 1 to 3 and comparative examples 1 to 3

Weed control subjects: crab grass and green bristlegrass herb

The test method comprises the following steps: selecting 4 grasslands with 8 square meters and uniform grass phase for each treatment, randomly arranging the grasslands, carrying out spraying treatment according to the glyphosate effective component 60 g/mu and the water consumption of 30L/mu, respectively carrying out pesticide effect observation after 7 days of treatment, and recording fresh weight control effect after 14 days; water was used as a blank.

The fresh weight control effect calculation method comprises the following steps: fresh weight control effect (fresh weight of weeds in blank control zone-fresh weight of weeds in treated zone)/fresh weight of weeds in blank control zone 100%

Table 1 shows the results of the observation test 7 days after the application; table 2 fresh weight control effect measured 14 days after application.

TABLE 1

As shown in the test results in Table 1, the aqueous glyphosate solutions prepared in examples 1 to 3 showed signs of wilting, lodging, blackening of heart and leaves, and slight yellowing of roots after 7 days treatment of weeds; after the glyphosate aqueous solution prepared by the comparative example is used for treating weeds for 7 days, only the symptoms of wilting, lodging and slight poisoning appear, and the symptoms of abnormal heart leaves and roots do not appear; the components of the glyphosate aqueous solution produce a certain synergistic effect, so that the glyphosate aqueous solution has more obvious effect and better quick action; and the experimental effect of the example 3 and the comparative example 3 shows that the glyphosate water agent containing the pinellia ternate water extract has better quick-acting performance compared with the chinaberry water extract.

TABLE 2

The data in table 2 show that the weeding effect of the glyphosate aqueous solution is significantly higher than that of the glyphosate aqueous solution prepared in a comparative example, and the experimental data of the example 3 and the comparative example 3 show that the pinellia ternate aqueous extract has a more significant synergistic effect on glyphosate than the melia azedarach aqueous extract.

In conclusion, the plant-source synergistic component pinellia ternate is added, so that the conduction of glyphosate in the bodies of weeds can be effectively promoted, particularly the conduction to roots is promoted, the quick action and the final control effect are improved, and the glyphosate aqueous solution has a remarkable weeding effect and is beneficial to market popularization and application.

The above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications and substitutions should be considered to fall within the scope of the claims.