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前言蔬菜塑料薄膜地面覆盖(简称地膜覆盖)栽培是现代农业生产的一项先进技术措施,在国外已广泛应用。目前日本在蔬菜保护地栽培中已有70%面积采用地膜覆盖。地膜覆盖,就是利用太阳的光能,人工地控制和改善土壤和近地气层小气候的光、热、水状况,为作物创造适宜的环境条件。因此,研究和利用地膜覆盖小气候的变化规律,对作物生育和产量形成是有着重要意义的。通过试验初步证明了:由于地膜覆盖,显著地提高了土壤温度、抑制了土壤水分蒸发;
Preface Vegetable plastic film ground cover (hereinafter referred to as plastic film mulching) cultivation is an advanced agricultural production of advanced technology and measures, has been widely used abroad. At present, 70% of the area in Japan’s vegetable cultivation has been mulched. Mulching covers the light, heat and water conditions of the microclimate in the soil and the near-field gas layers by using the solar energy and creating the appropriate environmental conditions for the crops. Therefore, it is of great significance to study and utilize the changing law of microclimate covered by plastic film to crop growth and yield formation. Preliminary tests showed that: due to plastic film mulching, soil temperature was significantly increased and soil moisture evaporation was inhibited.