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地膜覆盖是一项新技术,通过大面积推广实践证明,增产幅度大、经济效益高、适应范围广,是农业生产上少有的增产增收措施。1.特点及品种选择玉米地膜覆盖最突出的效应是增温保墒,弥补温、光、水资源的不足。一般可增加积温200℃～400℃,增强玉米耐霜冻的能力,相对延长了无霜期,因
Film mulching is a new technology. It has been proven through large-scale popularization practices that the yield increase is large, the economic benefits are high, and the adaptation is wide. It is a rare measure of increasing output and increasing income in agricultural production. 1. Characteristics and variety selection Corn film mulching the most prominent effect is warming soil moisture, make up for the temperature, light, water shortage. Generally increase the accumulated temperature 200 ℃ ~ 400 ℃, enhance frost resistance of maize, relatively extended frost-free period, due to