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介绍在小麦、玉米一年两熟条件下,玉米秸秆整株还田对土壤水肥及小麦生长发育的影响。重点介绍玉米整株还田技术、所需配套机具及操作工艺、技术要点和3年的实验结果。研究结果表明:整株还田,秸秆经过一年的腐解,腐解率达90％以上。玉米整株还田耕深20cm,秸秆在土壤8cm深度以下秸秆覆盖率达95％以上,能够保证冬小麦播种质量,小麦播种出苗后基本苗及分蘖测定分别比粉碎还田(对照)增加23株和0.2个。小麦生育期干物质和千粒重分别增加8.95％和1.33％,小麦产量提高3.18％。
The effects of corn stalks returning to the field on soil water, fertilizer and wheat growth and development under wheat and corn two year conditions were introduced. Emphasis will be given to the technology of corn whole plant in the field, the required supporting equipment and operation technology, technical points and 3-year experimental results. The results show that: the whole plant to the field, straw after a year of decomposition, decomposition rate of 90%. The whole plant of corn was plowed to a depth of 20 cm and straw coverage rate reached more than 95% under the soil depth of 8 cm, which could ensure the sowing quality of winter wheat. The measured seedlings and tillers after sowing were increased by 23 and 0.2 respectively . The dry matter and 1000-grain weight of wheat increased by 8.95% and 1.33%, respectively, and wheat yield increased by 3.18%.