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棉花地膜覆盖对缓解麦套棉花迟发晚熟起到了很大的缓解作用。但若管理不善,也极易造成棉株高脚线苗、棉苗旺而不壮、后期早衰等问题。因此,麦棉套种地膜覆盖棉花需从以下几个方面进行管理: 一、培肥地力,改善肥水条件 一要增施基肥,种类主要有厩肥、人粪尿、饼肥等。一般地力条件下667平方米施厩肥4000—5000公斤,饼肥40—50公斤,磷肥(过磷酸钙)40—50公斤。可分两次施下,第一次在种麦时施厩肥3000—4000公斤,过磷酸钙40—50公斤,第二次在来年结合棉垄整地施入厩肥1000公斤,饼肥40—50公斤。二要套种绿肥,在小麦收获后,结合早中耕灭茬播种一茬绿豆,待绿豆长至7月中旬,结合花铃期追肥开沟掩青,可使棉花生长稳健,后期不衰,充分发挥地膜的增产作用。
Cotton film mulching has greatly alleviated the delayed late maturity of wheat cotton. However, if the poor management, but also can easily lead to high cotton seedling Miaobo, cotton seedling Wang and not strong, late premature aging and other issues. Therefore, the cotton cover cotton mulching need to be managed from the following aspects: First, the fertility of land, fertilizer and water conditions to improve a base fertilizer, the main types of manure, human waste, such as cake fat. 667 square meters under normal land conditions fertilization 4000-5000 kilograms of manure, cake 40-50 kg, phosphate fertilizer (superphosphate) 40-50 kg. It can be applied twice in the first time when planting wheat, manure 3000-4000 kilograms, superphosphate 40-50 kilograms, the second in the coming year with cotton ridge land manure applied 1000 kg, 40-50 kg of cake. Second, intercropping green manure, after the wheat harvest, combined with planting astringent crop stubble mung bean until mid-July, with the flower-ring top dressing dressing ditching can make cotton grow sound, the latter is not bad, give full play to the ground film Increase production.