优质强筋小麦郑麦366精确定量施氮技术研究

Study on Precise and Quantitative N Application of Zhengmai 366 with Strong Gluten Quality

郑麦366是通过河南省和国家审定的高产优质强筋小麦新品种,为建立郑麦366相配套栽培技术体系,大田条件下研究了郑麦366的精确施氮量。结果表明:在240 kg.hm-2范围内,适当增加施氮量能改善后期旗叶光合性能、提高产量和品质,过量施氮肥效果降低。经模拟分析,施氮量为235.8和279 kg.hm-2时、籽粒产量和蛋白质含量较高。综合产量、品质和效益,每公顷施氮量应控制在230～280 kg之间。

A new wheat culfivar of Zhengmai 366 with high yield and quality was approved by Henan province and national standards. In order to establish cultivation system adapting to Zhengmai 366, the optimal nitrogen application rate on Zhengmai 366 was studied in field experiment. The results showed that increasing properly nitrogen application rate below 240 kg · hm ^-2 improved photosynthesis characteristics of flag leaf and gain yield and quality of Zhengraai 366 and the effects were reduced with excessive nitrogen. It indicated that grain yield and protein content was more when nitrogen application rate was about 235.8 and 279 kg · hm ^-2 ,respectively by simulation analysis. Based on the grain yield, grain quality and efficiency, the proper nitrogen application rate was from 230 to 280 kg · hm ^-2 .