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Ionic polymer cotton topping agent and preparation method thereof

A polymer, ionic technology, applied in the fields of botanical equipment and methods, biocides, animal repellents, etc., can solve problems such as unfavorable picking, inability to meet production requirements, and unstable yields, and achieve good tolerance. The effect of rainwater scouring ability, reducing the risk of phytotoxicity, and improving cotton production efficiency

Active Publication Date: 2019-04-16
TARIM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In 2001, Li Xinyu et al. used a single agent of methylpiperium to carry out a test of chemical capping instead of manual topping of long-staple cotton. The results showed that replacing manual topping with chemical capping can reduce labor intensity and improve work efficiency, but mepiperium alone lasts longer. The validity period is too short and cannot meet the production requirements well
In 2010, Zhejiang Hetian Chemical Co., Ltd. invented a cotton topping agent compounded with flubenzamine and methylpiperium. By spraying, the growth of the main stem and side branches of cotton is controlled to make the plant compact, but the persistence is short. It is easy to cause the cotton to turn green later and delay boll opening
In 2013, Zhao Qiang et al. added a small amount of ethephon to methylpiperium to control the top growth of cotton by spraying, but the cotton plant type was loose, which was not conducive to picking, which had a great impact on the top peach, and the yield was unstable.

Method used

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  • Ionic polymer cotton topping agent and preparation method thereof
  • Ionic polymer cotton topping agent and preparation method thereof
  • Ionic polymer cotton topping agent and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] (1) Preparation method: Dissolve 11.5 grams of 98% methylpiperium technical substance (0.1 mol) and 5.6 g of potassium hydroxide in 50 grams of ethanol, mix and add to a 250 ml three-neck flask, stir at room temperature for 2 hours, and filter out the precipitate. Add 24 grams of 30% polyacrylic acid aqueous solution (0.1mol) again, after stirring at room temperature for 2h, stop the reaction when the content of free methylpiperium in the detection solution is lower than 20mg / L, and the obtained viscosity is 126 centipoise, containing active ingredient methylpiperium 12 % high molecular polymer, its pH value is 5.7. The specific chemical reaction equation is as follows:

[0026]

[0027] (2) Effect verification:

[0028] 12% methylpiperium soluble solution test method for cotton top control effect:

[0029] The dosage of the topping agent of the present invention is 1500g per hectare, mixed with 8L of water for drone spraying. The dispensing method is operated acc...

Embodiment 2

[0044] (1) Preparation method: Dissolve 11.5 grams of 98% methylpiperium original drug (0.1mol) in deionized water, then add 24 grams of 30% sodium polyacrylate aqueous solution (0.1mol), stir at 40°C for 2 hours, and then detect the Stop reaction when free mepiperium content is lower than 50mg / L, obtain the high molecular polymer that viscosity is 126 centipoise, contains active ingredient mepiperium 12%, and its pH value is 5.7. The specific chemical reaction equation is as follows:

[0045] (2) Effect verification:

[0046] 12% methylpiperium soluble liquid solution test method for cotton top control effect: consistent with the test method of 12% methylpiperium soluble liquid solution in Example 1.

[0047] 12% methylpiperium soluble solution test method for resistance to rain erosion: It is consistent with the test method for 12% methylpiperium soluble solution in Example 1.

[0048]Adopt cotton topping agent of the present invention, conventional chemical topping agent ...

Embodiment 3

[0055] (1) Preparation method: dissolve 11.5 grams of 98% methylpiperium (0.1 mol) and 5.6 g of potassium hydroxide in methanol, mix them into a 250 ml three-necked flask, stir at room temperature for 2 hours, filter out the precipitate, and then add 29 grams of 30 % polymethacrylic acid aqueous solution (0.1mol), after stirring for 2h at 20°C, stop the reaction when the content of free methylpiperium in the solution is lower than 50mg / L, and obtain a viscosity of 126 centipoise, containing 12% of active ingredient methylpiperium High molecular polymer, its pH value is 5.7. The specific chemical reaction equation is as follows:

[0056]

[0057] (2) Effect verification

[0058] 12% methylpiperium soluble liquid solution test method for cotton top control effect: consistent with the test method of 12% methylpiperium soluble liquid solution in Example 1.

[0059] 12% methylpiperium soluble solution test method for resistance to rain erosion: It is consistent with the test m...

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Abstract

The invention discloses an ionic polymer cotton chemical topping agent and a preparation method thereof, and belongs to the technical field of pesticide preparation. The preparation method comprises:carrying out a reaction on mepiquat and an inorganic alkali in a solvent to form a mepiquat alkali, removing the inorganic salt, and directly carrying out an acid-alkali neutralization reaction on thesolution and an anionic polymer material to prepare the product, or carrying out an ion exchange reaction on the inorganic salt of an anionic polymer material and mepiquat in a solvent. Compared withthe conventional chemical topping agent, the ionic polymer cotton topping agent of the present invention has advantages of simple preparation, stable property, good environmental compatibility, long-lasting period and good rainwater scouring resistance, and can improve the utilization rate of the active ingredients of pesticides and reduce the risk of phytotoxicity.

Description

technical field [0001] The invention belongs to the technical field of pesticide preparation, in particular to an ionic polymer cotton topping agent and a preparation method thereof. Background technique [0002] Cotton has the habit of unlimited growth. Under certain temperature conditions, the apex grows and elongates continuously, and new stems, leaves and fruit branches are continuously differentiated. If left to grow, due to the existence of top dominance, water and nutrients will be preferentially supplied to the top, resulting in continuous growth of the cotton plant, thus prolonging the vegetative growth period and late maturity, affecting the quality and yield of cotton, so it is necessary to top the cotton . Topping is generally carried out at the early flowering stage of the cotton growth stage and before the arrival of high temperature weather. It is mainly to remove the top advantage, reduce the phenomenon of bud shedding in the later stage, and achieve the eff...

Claims

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Application Information

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IPC IPC(8): A01N43/40A01P21/00C08F8/30
CPCA01N43/40C08F8/30C08F120/06
Inventor 董红强唐刚李平陈佳林万素梅
Owner TARIM UNIV
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