一、情况和效果 所谓棉田两熟两肥制,是在麦棉两熟田里,冬季利用预留棉行套种箭舌豌豆绿肥作为棉花底肥或蕾肥,春季在厢沟两侧套种泰兴黑豆,收豆打饼还田作棉花花铃肥。它是在总结棉麦两熟棉田冬套箭舌豌豆绿肥和麦、豆、棉三熟制等经验的基础上发展起来的。目的是提高棉田土壤肥力、降低生产成本,促进棉粮高产稳产。两熟棉田由于长期麦棉连作,有机肥料施用又少,致使棉田土壤肥力下降,生产成本增高,产量不高不稳。人们已经认识到这种现状非改不可。但 First, the situation and the effect The so-called cotton fields, two cooked two fat, wheat and cotton fields in the two fields, the use of cotton reserves in winter to inter-planted tongue pea green manure as a cotton base fertilizer or Lei Fei, spring in the ditch on both sides of inter planting Taixing black beans, income Soybean cake field for cotton boll fertilizer. It was developed on the basis of summing up the experience of cotton-wheat double-ripe cotton field pea green pea green bean and wheat, bean and cotton three-cooked system. The purpose is to improve soil fertility in cotton fields, reduce production costs, and promote high and stable cottonseed production. Two-cropped cotton fields due to long-term wheat and cotton continuous cropping, organic fertilizer application and less, resulting in decreased soil fertility cotton, production costs increase, the yield is not high and unstable. People have realized that this status quo can not be changed. but