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小麦和棉花都是需肥量大、生长期长的作物,因此,棉麦两熟栽培存在争光、争肥、争季节的矛盾。特别是在多年棉麦复种连作的地区,土壤肥力显著下降,麦棉产量不稳、不高。为此,我们从一九七八年冬开始进行了棉麦两熟两肥栽培制度的研究工作。经过四年定位试验和全县多点示范,证明这一耕作栽培制度有明显的养地和棉麦两熟增产的效果。(一)试验、示范情况与结果为了克服麦、棉、肥三者互相影响,我们从改革麦棉种植方式入手,注意合理配置棉麦行距,将棉花播种宽行放到3.2—3.4尺,窄行4—6寸,这样不仅有利于麦、棉、肥的套种与生长,更便于畜力灭麦荐和两季绿肥翻沤。县体做法是,包沟3.6—4尺宽的
Both wheat and cotton are crops that require a large amount of fertilizer and have a long growing period. Therefore, there is a dispute over the two cotton and wheat cultivation, which is to win glory, fight for fertilizer and fight for the season. Especially in the area where cotton and wheat are planted for many years in succession, the soil fertility is significantly reduced and the yield of wheat and cotton is unstable and not high. To this end, we have carried out the research work on the two-fat and two-cropping system of cotton and wheat from the winter of 1978. After four years of positioning test and multiple demonstration in the county, it is proved that this cultivation and cultivation system has the obvious effect of raising land and increasing wheat and wheat double crop yield. (I) Experiment, Demonstration and Results In order to overcome the mutual influence of wheat, cotton and fertilizer, we started with the reform of wheat-cotton planting. Pay attention to the rational allocation of cotton and wheat-row spacing and put wide-rows of cotton sowing to 3.2-3.4 feet Line 4-6 inches, so not only conducive to wheat, cotton, fertilizer intercropping and growth, more convenient livestock off Mai recommended two quarters turn green and turn green. County approach is to package ditch 3.6-4 feet wide