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农一师地膜棉的播种方式,经历了由膜内(先播种后铺膜)到膜上(机械化膜上穴播)向膜外发展的三个阶段。实践初步显示:膜外播种技术先进,经济合理,是一种大有希望的播种方式。一、增产效果:1983年农一师开展了不同覆盖方式的多点试验示范,统一选用60+30厘米宽窄行距。试验结果:采用窄行膜上(窄行覆盖,膜上穴播)、宽行膜外(宽行覆盖,膜外播种)、窄行膜外(窄行覆盖,膜外播种)、隔行膜上(隔一窄行覆盖,膜上穴播)四种方式,都有一定增
Nongyi division mulching cotton sowing methods, has gone through the membrane (the first film after sowing) to the membrane (mechanized membrane hole sowing) to the membrane of the three stages of development. Preliminary practice shows that: film sowing advanced technology, economic and reasonable, is a promising way of sowing. First, the effect of increasing production: In 1983, Nongyi division carried out multi-point experiment and demonstration with different coverage ways, and uniformly selected 60 + 30 cm wide and narrow row spacing. The results were as follows: narrow line membrane (narrow line coverage, hole sowing), wide line membrane (broad line cover, extracellular membrane), narrow line membrane (narrow line cover, Every other narrow row of coverage, filmcasting) four ways, have a certain increase