论文部分内容阅读
本文研究了砂姜黑土稻麦轮作地区免少耕麦田稻草覆盖对冬小麦生长环境及产量的影响。结果表明，稻草覆盖具有在冬季增加土壤温度，减轻和消除小麦冻害；减少土壤水分蒸发，防止土壤开裂，保持较多土壤有效水，减轻和消除小麦旱害；增加小麦出苗率，促进小麦根系早生快发，为小麦根系生长创造良好的土壤环境等作用，因而不同耕作处理稻草覆盖田块小麦的增产呈现免耕套播＞免耕条播＞耕翻撒播之趋势，覆盖较不覆盖明显增产，增产幅度可达1％显著水平。
The paper studied the effects of straw mulching on the growth environment and yield of winter wheat in paddy-wheat-wheat rotation area of Shajiang black soil. The results showed that the straw mulching had the effects of increasing the soil temperature in winter, reducing and eliminating the frost damage of wheat, reducing the evaporation of soil moisture, preventing soil cracking, maintaining more soil available water, reducing and eliminating the drought of wheat, increasing the germination rate of wheat and promoting early root growth of wheat Fast-growing and wheat root growth to create a good soil environment, and so on, so different tillage treatment of straw cover plots of wheat yield increase showed no-tillage set> tillage> tillage overcast sowing trend, cover less coverage significantly increase yield Magnitude up to 1% significant level.