 
			华北平原一熟春棉干物质积累与养分吸收特性
董合林, 李鹏程, 刘爱忠, 王润珍
华北平原一熟春棉干物质积累与养分吸收特性
Characteristics of Dry Matter Accumulation and Nutrients Uptake of Spring-sown Cotton under Sole Cropping in the North China Plain
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