旱地玉米秸秆还田秋施肥生态效应研究

Ecological efect of retnrning corn stalks to the field and applying fertilizer in autumn in dry land

  • 摘要: 长期定位试验研究结果表明旱地玉米秸秆还田秋施肥具有显著增产效果,10年累计玉米籽粒增产12.10~17.27t/hm2, 增幅达25.59%~36.52%;玉米秸秆增加5.9~13.3 t/hm2,为秸秆还田提供了充足的有机肥源。秸秆还田秋施肥可起到秋保春墒的作用,苗全苗壮,养分充分得到有效利用,且有利于土壤微生物繁殖,促进秸秆等有机物料腐解,对提高矿质营养元素有效性,改善土壤理化性质有显著作用。

     

    Abstract: A long period located test shows that returning corn stalks to the field and applying fertilizer in autumn Can in-crease the corn yield significantly in dry lan d.The total coin grain amounts of i0-year accumulation increase 12.10~17.27t/hm2 compared with the traditional cultivation,the ranges of increasing yield are between 25.59% and 36.52%.meanwhile,the corn stalks also increase 5.9~13.3t/hm2,which provides adequate organic resources. Returning cornstalks to the field and applying fertilizer in autumn can play an important role of keeping soil water in both autumn and spring ,making the seedlings full and stronger and the nutrition good use,helping the soil microorganism to breed,promot-ing the organic matters decomposition,increasing the validity of mineral nutrients,and improving the soil physical andchem ical properties.

     

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