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tu rang e hua de yuan yin ji zhi li
Author(s): 
Pages: 64
Year: Issue:  23
Journal: JILIN NONGYE

Abstract:  1.土壤恶化原因1.1土壤板结由于大量施用化肥,忽视有机肥,使得土壤肥力出现衰退,有机质匮乏,透气体降低,需氧性的微生物活性下降,土壤熟化慢,导致土壤板结,作物根系发育不良,影响作物生长.
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