二元覆盖是指前茬垄作作物收获后，将秸秆顺放于垄沟，破垄，起新垄，将秸秆埋入地下３０ｃｍ处。翌年春季于新垄上播种玉米，然后进行地膜覆盖。由于上层地膜覆盖抑制了土壤水分蒸发，保证原有热量不散失，明显地提高了地温，促进土壤微生物的活动，加速地下秸秆的腐烂分... Binary coverage refers to the crop crop harvest after the former ridge, the straw along the ditch, break the ridge, the new ridge, the straw buried 30cm underground. The following spring sowed corn on the new ridge and then mulched. As the upper plastic film mulching inhibits the evaporation of soil moisture to ensure that the original heat is not lost, significantly increased ground temperature, and promote soil microbial activity, accelerating underground decay of straw ...