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关键词:rice-rice systems(模糊匹配)
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Do organic amendments improve yield trends and profitability in intensive rice systems?

SCI

机构:

来源:FIELD CROPS RESEARCH年份:2003

关键词: organic amendments inorganic fertilizer rice wheat rice-rice systems rice-wheat systems long-term experiments FYM straw

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How widespread are yield declines in long-term rice experiments in Asia?

SCI

机构:

来源:FIELD CROPS RESEARCH年份:2000

关键词: yield trends yield decline long-term experiments rice wheat rice-rice systems rice-wheat systems soil fertility

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