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在小麦、玉米两熟田上,秋季麦前实行1～2年的耙茬少耕,具有促根生长和提高深层土壤根系活性的作用,使小麦增产。耙茬少耕配合秸秆还田,促根增产的效果尤为明显。但连续少耕3～4年后,因耙层底部(15～20cm)形成耙底层影响根系正常下扎和活性,小麦花后根系衰老快,使小麦减产,耙秸还田的增产效果亦逐渐丧失。短期1～2年的耙茬少耕及耙秸还田与翻耕或深松结合为轮耕,促根增产,能充发分挥耙茬少耕高效、争时、节能、降本、护土、增产的效果。
In wheat, maize two ripening fields, the implementation of autumn wheat before 1 to 2 years of cropping less tillage, with root growth and improve root activity in deep soil role in the role of wheat yield. Harrow stubble with less straw with straw, to promote root production is particularly evident. However, after 3 to 4 years of continuous tillage, the bottom layer of rake layer (15 ~ 20cm) formed the bottom of the raking layer to affect the normal root barring and activity. The root system of wheat after anthesis was senesced quickly and the yield of wheat was reduced. Lost. Short-term 1 to 2 years of rake and tillage less harrow and rake straw and tillage with plowing or subsoiling combination of rotary tillage, to promote root production, irrigation and crop stubble can reduce the efficiency of irrigation, less energy, reducing costs, conservation Soil, the effect of increasing production.