The effect of different cotton-green manure application modes on yield and nitrogen absorption of cotton were studied. The results showed that, during the blooming period, the accumulation of dry matter and N accumulation of cotton under all applying fertilizer condition were lower than that in green manure, but that was opposite during the boll opening period, the dry matter accumulation in the treatment of conventional fertilization with 18 000kg/hm2 of green manure was the highest, and the transport capacity and transfer rate of N in leaf in the treatment of conventional fertilization with 24 000 kg/hm2 of green manure were the highest. The dry matter accumulation, N transport capacity and transit rate of stem in the treatment of conventional fertilization with 18 000 kg/hm2 of green manure were the highest. The accumulation of dry matter and N in shoot of cotton in the treatment of plowing 18 000 kg/hm2 of green manure with less chemical fertilizers was not lower than that in the treatment of plowing 18 000 kg/hm2 of green manure with more chemical fertilizers, and was higher than that in conventional fertilization treatment. The yield of seed cotton in the treatment of conventional fertilization with 12 000 kg/hm2 of green manure was the highest, and 1.53% of higher than that in conventional fertilization treatment. Under the same applying amount of green manure, the yield of seed cotton positively correlated with the application rate of fertilizer.%在大田试验条件下研究了不同棉花-绿肥生产利用模式对棉花干物质吸收和氮素积累的影响.结果表明,在花铃期全部施用化肥处理地上部干物质和氮素积累量比翻压绿肥处理减少.叶部干物质积累量以常规施肥+绿肥翻压18 000 kg/hm2为最高,而氮素转运量及转运率以常规施肥+绿肥翻压24000kg/hm2为最高.茎部干物质积累量、氮素转运量及转运率以常规施肥+绿肥翻压18 000 kg/hm2为最高.在翻压绿肥18 000 kg/hm2下,减施氮肥处理地上部干物质、氮积累量均低于不减氮处理,但高于单施化肥处理.各施肥处理子棉产量以常规施肥+绿肥翻压12 000 kg/hm2为最高,比单施化肥处理提高了1.53％,在翻压相同量绿肥下,子棉产量与化肥施用量呈正相关.
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