Cotton has a long growth period and requires a large amount of fertilizer, especially for the cultivation of hybrid high-yielding fields with insect-resistant cotton. The requirements for fertilizer and moisture are higher. In recent years, a number of typical high-yield farmers planting hybrid insect-resistant cotton have emerged. In addition to the selection of excellent cotton varieties, they are more or less coordinated in planting methods, cotton field density, and fertilization techniques. Although the climate in 2009 and 2010 was not very favorable to cotton-planting, because they arranged different planting patterns and densities according to different fertility, they all achieved good results of over 700 pounds per mu of seed cotton. In terms of planting methods, they have changed from wide-narrow rows planted for many years to one-room, two-row rows. The row spacing has been changed from 80 to 90 centimeters to 100 to 120 centimeters. In the cotton fields with large amount of fertilizer and good soil texture, the average row spacing is set to 120 cm, and the density is from 800 to 1,000 plants; in medium-fertilizer fields, the row spacing is set to 100 to 110 cm, and the density is 1300 to 1500 plants. Generally no more than 1500 plants per mu. In the application of fertilizers, their basic fertilizers pay attention to the application of bio-organic compound fertilizers and high levels of inorganic compound fertilizers, using deep trenching methods to reduce the loss of waste. At the same time, the amount of potash fertilizer per acre with no less than 60 kg, 0.8 kg of boron holding capacity, 1 kg of zinc fertilizer, medium-term stable Shi Lei fertilizer fertilizer application of bell fertilizer, late attention to the weather, seedlings, pay attention to public opinion, playing acupuncture Application of peach fertilizer increased boll weight and prevented premature aging. Fertilizer costs 300 yuan per mu. Recently, we have found that some cotton farmers have set too narrow a cotton line with an average line spacing of only 80 centimeters, and the density of the arrangements is too large, 1800-2,000 strains per acre. This is an unfavorable condition for the individual development of insect-resistant hybrid cotton. Development is also constrained. Some farmers have applied 100 kg of compound fertilizer per acre of base fertilizer, and they are planning to top-up 100 kg of fertilizer. They will also apply other fertilizers, which will not only increase the input of cotton fields, but also easily cause cotton to grow wild in the middle and late stages. Late cooking, rotten peach serious, last year, this lesson is quite a lot. The yield structure of cotton is composed of the number of plants per acre, the number of per plant, the weight of bolls, and the weight of bolls, and the high yield of cotton can not be separated from reasonable close planting and scientific fertilization. Reasonable planting patterns and density arrangements are determined according to the outline of their own cotton fields and the conditions of fertilizer and water. Different peasant households should be able to flexibly grasp the actual conditions of their own varieties, soil texture, and fertilizer and water conditions. Don't fall into the trap of high density and high fat.
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