The Variety Screening And Formula Fertilization Techniques Of Cotton In Kashi

There in Kashi of Xinjiang existed an place for the growth of cotton, even the cotton industry has already become an economic pillar industries for Kashi. Recently as the market operators of the sales of seeds, the cotton varieties appeared a complex status quo. It was hard to choose the major cultivars. Little is known of the comparative experiment of different major cultivars of cotton. In order to filter out the most suitable varieties in Kashi and to provide high quality fiber for the textile industry to increase the income of peasants, the present study investigated8major cultivars of Kashi, and chose8new varieties and made a comparison experiment, we discussed integrated qualite cotton, resistance analysis and to provide a theoretical basis for the Kashi area to promote breeding.China is a large agricultural country. We have large population and less land, The contradiction of alimentarn crop and cotton is increasingly obvious. In order to guide the farmers reasonable fertilization, and to identify the best fertilizer rates to obtain the highest profitable yields. We Constructed the Fertilization Parameters of cotton model, and made the development of zinc and manganese trace element field experimental work. We Built capacity and trace element fertilizer application system, and provide technical reference for the Kashi cotton fertilization.The results are as follows:1. Study on varieties comparative of popularized varieties showed that the growth cycle of cultivar Xinluzhong36lasted for132days. The time span of its growth cycle was at a moderate pace. It had strong growth potential, high uniformity and high fiber quality than other cotton cultivars. The cultivar Xinluzhong36was weak to verticillium wilt which cannot be cultured in the infected area.2. Study on varieties comparative of the introduction of new varieties. The results showed that the growth cycle of cultivar Zhongmian415and Zhongmian P53was at a moderate pace. Both of their growth cycles last less than135days. The yield was higher than control, and the height was suitable. The plant was of column type. All the economical character meet the requirement of Short, dense, early which worth to popularized for the excellent fiber quality.3. The field experiments on the medium fertility in Kashi area showed that the optimum ratio of fertilization was N:P2O5:K2O=1:0.65:0.22-0.25. The optimum ratio of fertilization in medium fertility cotton field was that304.5kg/hm2of nitrogenous fertilizer,189kg/hm2of phosphate fertilizer,64.5kg/hm2for potassic fertilizer. When the soil is lack of trace elements, the enrichment of trace elements based on the optimum amount of fertilizer can improve the yield, and increase income.4. Rational fertilization can make the cotton plant height, fruit branch number of boll number per plant, lint percentage, boll weight, achieve a good status. The rational application of nitrogen, phosphorus, potassium fertilizer lead the plant height, moderate growth period, boll weight, fruiting branch number increased to the optimum value, and increased the yield of cotton. The nitrogen fertilizer was important for the shape of cotton plant and had a certain influence on the yield. The nitrogen fertilizer exceeded the maximum value lead to late-maturing of cotton.To conclude, the growing period, growth, agronomic traits, economic traits, yield, fiber quality and disease resistance of cultivar Xinluzhong36were better than other cotton cultivars. It was worthy of popularization. Cotton cultivar Zhongmian415and Zhongmian P53was worthy to popularized for The high yield, and the suitable height and the column type of the plant which meet the economical character of Short, dense, early. The optimum ratio of fertilization in Cashi was NrPiO5:K2O=1:0.65:0.22-0.25. The optimum ratio of fertilization in medium fertility cotton field was that304.5kg/hm2of nitrogenous fertilizer,189kg/hm2of phosphate fertilizer,64.5kg/hm2for potassic fertilizer. When the soil is lack of trace elements, the enrichment of trace elements based on the optimum amount of fertilizer can improve the yield.