【摘 要】
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[Objective] The aim was to study on effects of "straw returning and ir-re- turning" and "irrigation with ground water and water in the Yellow River" on changes of e
【机 构】
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CollegeofLifeSciences,HuadianAgriculturalPopularizingCenter
【基金项目】
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Supported by National Natural Science Foundation of China (30771156), Shandong Natural Science Foundation (2005ZX10, 2009ZRB01762), Scientific Research Starting Fund for the Returned Overseas Chinese