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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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, it has been affected by the climate in recent years.
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The planting method of cotton which is difficult to open boll should be reformed.
In recent years, with the continuous deepening of the breeding of new cotton varieties, the improvement of sowing and seedling methods, as well as the improvement of agricultural mechanization, the planting mode of cotton field is very important for the high yield of cotton. In the era of conventional cotton, cotton sowing is mainly direct seeding, cotton planting density is larger, cotton row spacing is smaller, cotton fertilization is more. When hybrid cotton is popularized and used in a large area, due to the large ontogeny of hybrid cotton, the density of cotton field decreases continuously, the row spacing of cotton expands, and the cotton field density decreases continuously.
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