Cultivation method of southern XinJiang film-free cotton

Abstract

The invention relates to the field of cotton planting, in particular to a cultivation method of southern XinJiang film-free cotton. The method comprises the steps of choosing early-maturing upland cotton varieties for use, wherein the cotton varieties mature within 120 days under the film-mulching cultivation condition and mature within 135-140 days under the film-free cultivation condition; conducing fertilization and ploughing for sowing, wherein the planting density is 240,000-255,000 plants.hm<-2>; when cotyledons stretch flat, conducting continuous chemical regulation twice, wherein the usage amount of mepiquat chloride is 1.4-1.6 g.hm<-2> and 0.8-1.2 g.hm<-2> respectively, and the usage amount of mepiquat chloride is 4.3-4.8 g.hm<-2> after topping is conducted; conducting water and fertilizer management and disease pest and weed prevention and control in a growing period. According to the cultivation method of the southern XinJiang film-free cotton, the cotton does not need to be covered with mulching film, and thus white pollution caused by the mulching film is prevented; the specific early-maturing upland cotton varieties are selected and adopted, by adding a proper amount of base fertilizer and with the assistance of chemical regulation and water and fertilizer management, sufficient nutrients are provided for all stages of growth of the cotton, later maturity, yield reduction and quality lowering caused by later sowing are overcome in the cultivated cotton, and thus the yield is steadily increased, and the quality is gradually improved.

Description

technical field [0001] The invention relates to the field of cotton planting, in particular to a method for cultivating filmless cotton in southern Xinjiang. Background technique [0002] Since the promotion of plastic film cotton planting technology in Xinjiang in the 1980s, the problem of plastic film residual pollution has become increasingly serious. The cost of manually uncovering the film in cotton fields in southern Xinjiang accounts for 25% of the labor management cost. Even if manual film removal or mechanized recycling is used, the annual residual rate of plastic film in the soil is still about 15%. In some cotton fields without film removal, the plastic film residual rate is as high as 100%. The average annual plastic film residual rate in Xinjiang is 24.4%, which is harmful to the soil environment Pollution has become one of the worst in the country. According to Mao Shuchun's 2014 "China Cotton Prosperity Report", the machine-picked cotton planting production ...

AI Technical Summary

Problems solved by technology

[0003] The existing bare land planting method in southern Xinjiang has a low cotton yield when used in field production. For example, in the "Experiment on Sowing Date and Density of Bare Land Cultivation of Early-maturing Cotton in Southern Xinjiang", the cotton seed cotton yield is less than 4000kg·hm -2 , the output needs to be further increased

Images