地膜覆盖棉花管理技术要点河南农业大学郭应信棉花地膜覆盖栽培．在我国发展很快，是目前世界上应用面积最大的国家。我省生产实践业己证明，地膜覆盖棉花栽培，只要严格按照技术要求去做，一般比露地直播棉花可增产３０％以上。但增产的幅度大小又与覆盖方式、种植制度、... Cotton Mulch Mulch Technical Points of Management Guo Yixin of Henan Agricultural University Cotton Mulch Mulch Cultivation. It has developed rapidly in our country and is currently the largest applied area in the world. Production practice in our province has proved that cotton film mulching cultivation, as long as strictly in accordance with the technical requirements to do, generally open-crop cotton can be increased by more than 30%. However, the size of the increase in production and coverage, planting system, ...