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在辽宁西部用田间试验的方法研究了夏季深松、秋季覆膜、翌年春季播种的保墒效果;结果表明同传统春季覆膜相比,秋季覆膜的保墒效果更好,它可以蓄保秋墒、减少冬春土壤水分蒸发,克服因春旱严重而不能适时播种的问题。到翌年春天播种时,夏季深松+秋季覆膜处理0～40cm的土壤含水量高于夏季不深松+秋季覆膜处理、夏季不深松+春季覆膜处理和夏季不深松+不覆膜的对照处理。夏季深松+秋季覆膜处理能够显著增加玉米的株高、茎粗、穗长和穗粗,产量较夏季不深松+秋季覆膜处理、夏季不深松+春季覆膜处理和对照处理分别增产43.0%、58.8%和60.6%。
In the western Liaoning, field trials were conducted to study the effects of soil moisture on sowing in summer and autumn in autumn and sowing in the following spring. The results showed that compared with the traditional spring mulching, the effect of soil moisture conservation in autumn mulching was better, , Reduce the winter and spring soil moisture evaporation, to overcome the serious drought and can not be timely sowing problems. When sown in the spring of next year, soil moisture content of 0 ~ 40 cm in summer subsoiling + fall mulching was higher than that in summer without subsoiling + autumn mulching, summer subdued + spring mulching and summer subdued + mulching Membrane control treatment. Summer subsoiling + autumn mulching treatment can significantly increase the plant height, stem diameter, spike length and ear diameter of maize, the yield was less subsoiling than the summer + autumn mulching, summer subsoiling + spring mulching and control treatments respectively Yields increased by 43.0%, 58.8% and 60.6%.