Method for preventing and removing broadleaf weeds in cotton field by applying pesticide through drip irrigation system

Abstract

The invention discloses a method for preventing and removing broadleaf weeds in a cotton field by applying pesticide through a drip irrigation system, and relates to the technical field of agricultural weeding. The method comprises the steps of pesticide dispensing, clean water drip irrigation, pesticide application along with water and drip irrigation system flushing. By utilizing a drip irrigation system, flumioxazin is finally applied to soil around the roots of cotton along with water drops through all levels of pipelines, weeds around the roots of the cotton can be conveniently and effectively prevented and removed, annual broadleaf weeds such as solanum nigrum, chenopodium glaucum and chenopodium quinoa can be sealed and killed, the effect is rapid, and safe growth of cotton and environmental protection can be achieved; and the method can be used as a supplementary means after soil sealing treatment before cotton sowing, weeds in the whole growth period of cotton are effectivelyprevented and controlled, the labor cost, the mechanical cost and other related costs are reduced, and the method is economical, simple, effective, safe and beneficial to quality improvement and efficiency improvement of machine-harvested cotton.

Description

technical field [0001] The invention relates to the technical field of agricultural weeding, and more specifically relates to a method for controlling broad-leaved weeds in cotton fields by using a drip irrigation system. Background technique [0002] Xinjiang is a high-quality cotton production base in my country. The development of machine-picked cotton is the only way to promote Xinjiang's agricultural modernization and meet the challenges of the international market. In 2019, Xinjiang's cotton machine-picked rate reached more than 42%, and the cotton machine-picked rate of the main cotton areas in northern Xinjiang exceeded 90% %, however, the spread of the broad-leaved weed Solanum nigrum in cotton fields in recent years has hindered the improvement of machine-picked cotton quality and efficiency. Solanum nigrum has the characteristics of vigorous growth, strong fecundity, short growth period (2 to 3 stubbles a year), continuous multi-seed, and grain shedding. A single p...

AI Technical Summary

Problems solved by technology

Since water and fertilizer are evenly and accurately transported to the root area of ​​cotton through the drip irrigation pipeline system, weeds often germinate and grow around the cotton seed hole, so it is too risky to use glyphosate, which kills herbicides, and there is currently a lack of A safe and effective stem and leaf treatment herbicide for controlling broad-leaved weeds in cotton fields, which makes post-emergence weed control difficult

The control of this part of weeds is mainly based on artificial weeding, which is costly, with an average of 150 yuan per mu of land, and has low efficiency and poor effect (associated with cotton, deep roots are not easy to pull out)

[0004] The integration of water and medicine is a new agricultural technology that integrates drip irrigation and pesticide application. Its core is to use the pressure drip irrigation system to make the medicine be delivered to the rhizosphere of crops on time, evenly and accurately with the drip irrigation water, so as to play the role of preventing and controlling diseases, insect pests and weeds. purpose, there are relatively few studies on this technology in the control of field weeds

Moreover, there have been studies on the application of refined metolachlor with water droplets to Xinjiang cotton fields (cotton fields with annual broad-leaved weeds such as black nightshade, gray-green quinoa, and quinoa as dominant populations), however, the control effect is not satisfactory. , 960g / L refined metolachlor EC 1440g a.i. / hm 2 , 7 days after treatment, the control effect is less than 25%, 25 days after treatment, the control effect is less than 35%

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