保护性耕作土壤肥力动态变化的研究--秸秆覆盖对土壤温度的影响
보호성경작토양비력동태변화적연구--갈간복개대토양온도적영향
The Study of the Dynamics of Soil Fertilizer in Conservation Tillage the Effect of Covering Straw on Soil Temperature
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