南疆干旱区连作棉田土壤养分及生物活性的初步研究
范君华, 龚明福, 刘 明, 张利莉
南疆干旱区连作棉田土壤养分及生物活性的初步研究
Preliminary Research on Soil Nutrients and Bioactivity in Continuous Cropping Cotton Fields of Dryland in South Xinjiang
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