High-efficiency defoliating and ripening agent used before picking cotton

Abstract

The invention provides a high-efficiency defoliating and ripening agent used before picking cotton. The high-efficiency defoliating and ripening agent is prepared by the following steps of: fully stirring 250 to 850 kilograms of ethrel, 55 to 200 kilograms of thidiazuron, 0.50 to 1.90 kilograms of DT34 auxiliary agent and 0.15 to 0.60 kilograms of DM12 auxiliary agent in a reaction kettle in turn; fully dissolving 15 to 53 kilograms of water and 0.18 to 0.22 kilograms of silicone antifoaming agent in advance to obtain solution; adding the solution; and stirring for 25 to 30 minutes at normal temperature and normal pressure to obtain a finished product. The defoliating and ripening agent is sprayed in an application dosage of 80 to 120ml / mu when the cotton fiber grow rate is over 60 to 70 percent before picking the cotton. The defoliating and ripening agent is sprayed at 6 to 8 pm in September to October of the maturation period of the cotton; rainy days are avoided; and the defoliating and ripening agent can be re-sprayed if the defoliating and ripening agent is caught in the rain. The product combines the efficiencies of ripening and defoliating, saves labor, time and effort, greatly improves labor production efficiency and cotton quality rate, and lays a solid foundation for manual fast harvest and mechanical one-time harvest. Compared with a conventional single product, the picking period is 15 to 20 days earlier and the average defoliation rate is over 90 percent.

Description

technical field [0001] The invention relates to the maturation and picking of cotton, especially the technology of defoliation and ripening. The use of the agent can effectively solve the disadvantages of affecting the quality of cotton picking due to unfavorable defoliation, and achieve the effect of reducing cost and increasing yield. Background technique [0002] According to literature retrieval, domestic research on cotton defoliation and ripening agent is disclosed: 1. Hebei Province Grain Research Institute Wang Guiqi and others have invented a kind of Thidiazuron-ethephon compound cotton growth regulator (patent application number: 200810054702.2), including Components in the following percentages by weight: 45% to 90% of thiadizuron and ethephon (weight ratio is 1: 2.5 to 5) active ingredients, and the balance is auxiliary agents (pesticide penetration agent, solid carrier, wetting agent, Dispersants, etc.), can be used for cotton ripening and defoliation. ②Shanxi ...

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Problems solved by technology

The papers published include: ⑤ The paper "Study on the Application Effects of Several Defoliating and Accelerating Ripening Agents on Cotton" published by Ma Yan et al. Three kinds of defoliation and ripening agents were sprayed, totopolone, thiadizuron, and ethephon. High defoliation effect and good ripening effect, 10-20 days after treatment, the drug effect reaches 86.95%-95.03%, and the boll opening effect reaches 7.08%-11.24%; use 225g·hm^-2 of Thidiazuron for defoliation The effect is obvious, 10-20 days after the drug, the drug effect reaches 88.09%-97.73%, which is significantly higher than that of ethephon 600g·hm^-2 and 720g·hm^-2, but its ripening effect is lower than that of ethephon

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