化肥、农药和地膜对甘肃省农业生态环境的影响

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尉元明, 王静, 乔艳君

Influence of Chemical Fertilizer,Pesticide and Plastic Film on Agricultural Ecology Environment in Gansu Province

WEI Yuan-ming, WANG Jing, QIAO Yan-jun

中国沙漠 . 2005, (6): 957 -963 .