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利用长期定位试验在豫西旱区坡耕地上对不同保护性耕作下冬小麦主要生育期的土壤温度、土壤养分、水分动态、干物质积累和小麦产量进行研究。结果表明:深松和免耕覆盖土壤含水量较高,深松与免耕覆盖技术能够提高土壤肥力,越冬期保护性耕作5 cm地温较低,而0~30 cm地温相差不大。深松覆盖在灌浆期土壤日均地温较低,有利于防御干热风对小麦的危害。小麦中后期深松覆盖和免耕干物质积累量较多,能延缓小麦植株衰老。
Long-term experiment was conducted to study soil temperature, soil nutrient, water dynamic, dry matter accumulation and wheat yield in the main growth stages of winter wheat under different conservation tillage practices on sloping fields in arid areas of western Henan. The results showed that soil moisture content of subsoiling and no-tillage covered soil was higher, and subsoiling and no-tillage covering techniques could improve soil fertility. During the winter, conservation ground tillage 5 cm lower ground temperature, while 0-30 cm ground temperature had little difference. Subsoiling covers in the filling stage soil daily average temperature is low, is conducive to the defense of dry and hot wind on the harm of wheat. Middle and late wheat covers and no-tillage more dry matter accumulation, can delay the aging of wheat plants.