]*>","")" /> Effects of Irrigation and Nitrogen on Flag Leaf SPAD, Net Photosynthetic Rate and the Yield of Winter Wheat in the Freshly Plowed Soil of Ili River Basin, Xinjiang
Xinjiang Agricultural Sciences

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Effects of Irrigation and Nitrogen on Flag Leaf SPAD, Net Photosynthetic Rate and the Yield of Winter Wheat in the Freshly Plowed Soil of Ili River Basin, Xinjiang

XU Yong-mei;LIU Hua;Dilixiati;Yilihamu;LUO Xin-hu;MENG Fen-xuan;MA Xin-wang   

  • Received:2011-12-25 Revised:2011-12-25 Online:2011-12-25 Published:2011-12-25

水氮运筹对伊犁河流域新垦土壤冬小麦旗叶SPAD值、净光合速率及产量的影响

许咏梅;刘骅;迪力夏提;依里哈木;罗新湖;孟凤轩;马兴旺   

  1. 新疆农业科学院土壤肥料与农业节水研究所,乌鲁木齐,830091;伊犁州农技推广总站,新疆伊宁,835000





摘要： [目的]针对新疆伊犁河流域新垦土壤土层薄、坡度大、保水保肥差等特性,开展研究获得新垦区最佳水肥调控措施.[方法]采用正交试验法研究了水、氮两因素对冬小麦旗叶SPAD值、净光合速率(Pn)及产量的影响.[结果]施纯氮量、灌溉总量是影响冬小麦生理性状和产量的主要因素,其次是施肥比例和灌溉频数；极差分析说明,施氮量和施肥比例对旗叶SPAD值的影响大于灌溉量和灌溉频数；而对净光合速率影响的主次排序是灌溉频数＞施氮量＞灌溉量和施肥比例.[结论]综合小麦叶片SPAD、净光合速率Pn以及产量方差分析的结果,推荐伊犁河流域新垦区冬小麦种植最佳施纯氮量为375 kg/hm2,灌溉量为4 500 m3/hm2,优化施肥制度为,全生育期追施两次氮肥,分别在返青期与拔节期,施肥量分配比例为6∶4,优化灌溉频数为6次.