Cotton defoliant and preparation method thereof

Abstract

The invention discloses a cotton defoliant and a preparation method thereof. The cotton defoliant is prepared from the following components in parts by weight: 5-25 parts of thidiazuron, 2-20 parts of pyrithiobac-sodium, 1-20 parts of forchlorfenuron, 10-40 parts of organic bentonite, 3-15 parts of a wetting dispersant, 1-10 parts of an antifoaming agent and 2-20 parts of deionized water. The preparation method comprises the steps of firstly adding taken deionized water to thidiazuron for diluting; adding pyrithiobac-sodium and forchlorfenuron and then adding organic bentonite to a mixed liquid; and finally sequentially adding the wetting dispersant and the antifoaming agent while stirring at a specific temperature, stirring and mixing evenly to obtain a finished product. The cotton defoliant is wide in raw material source, low in cost and simple in preparation, pollution of leaves to machine-harvested cotton can be reduced, the mechanical cotton-picking operation quality and efficiency are improved, the leaves fall off in a dark green state, growth of a cotton fiber can be promoted and the target of yield increase is achieved.

Description

technical field [0001] The invention relates to the field of crop planting and production, in particular to a cotton defoliant and a preparation method thereof. Background technique [0002] Cotton is the main economic crop in my country, and its planting area ranks among the top in the world. Affected by many factors such as planting conditions, management measures, and cotton characteristics, mechanized harvesting has not been realized. Wheat, corn, beans, etc. have been harvested mechanically, but cotton is still harvested manually in large areas, which seriously restricts the cost and economic benefits of cotton planting, and the harvesting mode needs to be improved urgently. The main way to solve at present is to cultivate fine varieties and popularize defoliation technology and mechanical harvesting. Defoliation technology and mechanical harvesting have been gradually promoted in Xinjiang, my country in recent years. The "Twelfth Five-Year Plan" plans to implement me...

AI Technical Summary

Problems solved by technology

[0003] Machine-picked cotton must be sprayed with ripening agent and defoliation agent before harvesting, and it takes about 15-20 days for the effect of the defoliation agent (hormone-regulated type) to play its role. At this time, cotton is at the key to ripening autumn peach During this period, if the selection of defoliant varieties and the timing of spraying are inappropriate, it will directly affect the maturity of cotton, resulting in unfulfilled cotton seeds and affecting the weight of seeds, which will further affect the yield and grade of cotton.