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在寒冷的半干早地区地膜覆盖栽培具有明显的增温保水效应。而水热条件的改善可促进土壤养分的分解,有利于寒地大豆的生长发育,延长大豆生殖生长期,进而增加了干物质的积累,从而使大豆产量提高35.7—72.7％。
In the cold semi-dry early morning mulching cultivation has obvious warming water retention effect. The improvement of hydrothermal conditions can promote the decomposition of soil nutrients, is conducive to the growth and development of winter soybean to extend the reproductive growth phase of soybean, thereby increasing the accumulation of dry matter, so that soybean yield increased 35.7-72.7%.