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北方旱作農(nóng)業(yè)區(qū)蓄水保墑耕作模式研究
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    摘要:

    分析了北方旱作農(nóng)業(yè)的現(xiàn)狀，提出了適合東北壟作區(qū)的三年輪耕法和西北黃土高原區(qū)的自然降水高效利用技術(shù)，并對其進行了試驗。東北耕法：秸稈還田使土壤含水率提高10%，土壤有機質(zhì)3年提高0.06個百分點，土壤容積密度降低0.09 g/cm3，深松使0～100 cm土層土壤含水率提高26.2%，少耕精播土壤含水率提高3個百分點；西北新耕法：冬小麥蓄水率提高18.5%，水分生產(chǎn)效率提高25.6%；春玉米在0～10 cm土層，含水率提高30%，水分生產(chǎn)效率提高47.6%。2年連續(xù)秸稈還田試驗，有機質(zhì)質(zhì)量分數(shù)增加0.05%～0.1%，全氮質(zhì)量比增加

    Abstract:

    0.1 g/kg左右。The present status of dry farming in northern China was analyzed and a three-year rotation tillage method suitable for the ridged cultivation region of northeastern China and the techniques for efficient utilization of natural rainfall in the Loess Plateau region of northwestern China was put forward. The tests conducted in the northeast showed that stalk mulching increased the percentage of soil moisture content by 10% and the content of soil organic matter by 0.06 percentage point after three years, decreased the volume density of soil by 0.09 g/cm3, chiseling increased the percentage of soil moisture content by 26.2%, and less tillage increased the percentage of soil moisture content by 3 percentage point. The tests conducted in the northwest showed that for winter wheat, the percentage of water storage increased by 18.5%; for spring corn, the percentage of soil moisture content increased by 30%. The stalk mulching tests for two years showed that the content of soil organic matter increased by 0.05%～0.1% and the content of total nitrogen increased by about 0.1 g/kg. 

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賈洪雷,馬成林,劉昭辰,楊青,李廣宇,劉暉.北方旱作農(nóng)業(yè)區(qū)蓄水保墑耕作模式研究[J].農(nóng)業(yè)機械學(xué)報,2007,38(12):190-194.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):190-194.

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