Spraying zhuangsu on cotton has many benefits.
Zhuang Su is a special growth regulator for cotton, which can control the overgrowth of cotton, regulate the distribution of nutrients and improve the boll setting of cotton. In September, the growth and development of cotton is in the late boll-setting stage, so proper spraying of zhuangsu, 20ml per mu, can reduce the occurrence of invalid buds.
After spraying cotton, the leaf color increases, the mesophyll thickens, which can effectively improve the photosynthesis of cotton. After spraying zhuangsu, the fruit branches of the upper part of cotton can grow old and healthy, and the effects of insect pests such as cotton bollworm and Spodoptera litura are reduced. At the same time, due to the influence of climate in recent years, the growth of cotton is prosperous in the later stage, and there are a lot of superfluous buds in the upper part, which consumes a lot of nutrients and affects the enrichment of the upper cotton peach, so it needs to be removed manually. After spraying Zhuangzhuangsu, it can effectively reduce the occurrence of superfluous buds and save manual input.
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Cotton leaf spray fertilizer remember five points
Cotton leaf is the most important vegetative organ of cotton, which has four functions: photosynthesis, respiration, transpiration and absorption. Making use of its absorption and photosynthesis, foliar fertilizer spraying can promote plant growth, enhance disease resistance, insect resistance, drought resistance and premature senility resistance, regulate vegetative growth and reproductive growth, and greatly improve yield and quality. 1. The type of spraying can be selected scientifically according to the growth of cotton, and the vigorous growth of cotton seedlings can be sprayed with 0.3%-0.4% potassium dihydrogen phosphate solution or 2% borax solution.
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The income of raising cotton seedlings by hydroponic culture with foam plate substrate is higher.
Ezamian 10 F1, which is widely used in the market at present, was selected to compare the cultivation effects of plastic floppy disk substrate, foam disk substrate hydroponic culture and fertilizer soil nutrient bowl. The results showed that when cotton was planted in alluvial fluvo-aquic soil in Wuhan, the net income per unit area of continuous cropping with rape was the highest in hydroponic culture of foam plate, followed by that of plastic floppy disk. Therefore, the cotton varieties and the selection of light and simplified cultivation techniques according to local conditions can improve the cotton planting efficiency.
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