地膜覆盖栽培应注意的问题１．地膜栽培是一种积极的“促根栽培”。但对土壤而言又是一种“消耗促进栽培”。如果土壤肥力不足，就难以达到早熟增产的目的。因此，地膜栽培应在土壤肥力高的地块进行，并施足底肥，增施有机肥、迟效肥及磷钾肥，以提高地力。２．种子萌发出... Film mulch cultivation should pay attention to the problem 1. Film cultivation is a positive “to promote root cultivation.” But for the soil is again a “consumption-promoting cultivation.” If insufficient soil fertility, it is difficult to achieve the purpose of early maturity and yield. Therefore, the film cultivation should be carried out in high soil fertility plots, and the application of sufficient base fertilizer, organic fertilizer, fertilizer and phosphorus and potassium fertilizer to increase fertility. 2. Seeds germinate ...