摘要
通过分析地膜覆盖后土壤水分平衡的变化特点,建立了地膜覆盖前后农田土壤湿度变化的模拟方程.系统阐述了地膜覆盖土壤水分效应的形成机制及其变化规律.指出了地膜因子、气象因子及植物因子等在土壤水分效应形成中的作用,为地膜覆盖在农业生产中的优化利用提供了理论依据.
The simulating models about the change of soil water content under plastic mulch were established by analysing the changes of soil water balance after mulching. The forming mechanism and the changing regular of soil water content under plastic mulch were systematically expounded. The functions of plastic mulch, meteorology factors and so on in soil water effect were discussed in this paper. This supplies theoretical basis for the optimum application of plastic mulch in agriculture.
出处
《华北农学报》
CSCD
北大核心
1990年第1期46-50,共5页
Acta Agriculturae Boreali-Sinica
关键词
地膜覆盖
土壤水分
Plastic mulch
Soil water content
