膜下滴灌水氮耦合对棉花干物质积累和氮素吸收及水氮利用效率的影响OA北大核心CSCDCSTPCD
Coupling effects of water and nitrogen on dry matter accumulation,nitrogen uptake and water-nitrogen use efficiency of cotton under mulched drip irrigation
在膜下滴灌条件下,设3个氮素水平和2个水分水平,研究了水氮耦合对棉花干物质积累、氮素吸收及产量、水氮利用效率的影响.结果表明,增加水分或氮素供应,花铃期根冠生物最和氮素吸收增加;增加灌水量,吐絮期地上部干物质和氮素积累量增加,根干物质积累量在低氮或高氮下增加,中氮降低;产量和氮素利用效率增加,水分利用效率下降.水分胁迫条件下,增加氮素的供应吐絮期地上部干物质、氮素积累量、产量差异不大,根干物质积累最以N276处理最高,氮素利用率下降,水分利用率增…查看全部>>
Field trials were conducted to study the coupling effects of water and nitrogen on nitrogen uptake and dry matter accumulation of cotton at different growth stages, lint yield and water-nitrogen use efficiency. Cottons were grown under three nitrogen application levels and two irrigation levels making six combination treatments. The results show that during the flowering and boll-setting stage, water and nitrogen supply can promote root and shoot growth of c…查看全部>>
谢志良;田长彦
中国科学院绿洲生态与荒漠重点实验室,新疆乌鲁木齐,830011中国科学院新疆生态与地理研究所,新疆乌鲁木齐,830011
农业科学
膜下滴灌棉花干物质积累氮素吸收水氮利用效率
《植物营养与肥料学报》 2011 (1)
160-165,6
中国科学院知识创新工程项目(KZCX2-XB2-03-2)中国科学院农业项目(KSCX2-YW-N-41)资助.
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