This technology is mainly applicable to the middle and lower reaches of the Yangtze River and the middle and lower reaches of the Yellow River. First, technical content The cotton planting mechanization technology includes mechanized cultivation of cotton fields, mechanical sowing (film coating), and uncovering of membranes at the seedling stage. Second, technical requirements 1. Mechanized tillage. 1 Deep application of chemical fertilizer and mechanical deep plowing. There are two ways to deepen chemical fertilizers. One is to apply fertilizer first and then plow; the other is to fertilize the fertilizer evenly into the furrow. Plowing depth should reach 22 cm or more. 2 Mechanized soil preparation. Use a joint grader or a rotary cultivator. After the site preparation, the diameter of the surface earth block shall not be greater than 3 cm. The soil layer shall be under virtual reality. The virtual soil layer shall have a thickness of 8 to 10 cm. No residual roots, stubble and weeds. 2. Mechanical film sowing. 1 film sowing. It is divided into two modes: "first broadcast after shop" and "first shop after broadcast". After the first sowing, the film ruptured immediately after emergence. 2 Technical requirements for film sowing. The film is laid flat and close to the ground; the membrane is buried tightly, the depth of the membrane edge is 5 + 1 cm, the leakage rate is less than 5%, the breakage rate is less than 2%, the degree of fit is greater than 85%; the narrowness of the lightness is greater than 40%, and the width is wide The membrane is greater than 80%. The number of holes for sowing and sowing should be 2 to 3 grains per hole; the thickness of holes for soil covering holes should be 1.5 to 2 cm, and the leakage coverage rate should be less than 5%. It is required that the seeds be uniform, the covering soil is good, and the suppression is strict. Fertilization to achieve the required amount of fertilizer and fertilization depth, uniform row of fertilizer. Deep application of fertilizer requirements at the same time sowing, the fertilizer applied to the seed below or under the side, between 3 to 5 cm in thickness between the soil isolation layer, to achieve fertilizer layering. 3. Film removal at the seedling stage. The removal of membranes at the seedling stage is a waste film recovery method under the condition that the water source is fully guaranteed and the field management can be followed in the later period. Before using the head water, use a seedling film recovery machine to remove all the plastic film. Third, pay attention to matters 1. Select good varieties, perform fluffing, selection, chemical seed dressing treatment, and germination test before sowing. 2. Select farmland with medium fertility above to grow cotton. Through rational rotation and dumping, adding organic fertilizer, deep chemical fertilizer, straw smashing and field return, green manure turning and other measures to increase soil fertility. Waterproof Breathable Hydrocolloid Dressing,Hydrocolloid Dressing,Convenient Flexible Hydrocolloid Dressing,Preventing Microbes Hydrocolloid Dressing Zhende Medical Co.,Ltd , https://www.zdmedicalproduct.com