氮肥施入量对水稻新品系盐粳377产量的影响  

Effects of Nitrogen Amounts on the Yield of Yanjing-377

作　　者：韩士钦[1] 李旭[1] 付立东[1] 

机构地区：[1]辽宁省盐碱地利用研究所,辽宁盘锦124010

出　　处：《北方水稻》2015年第4期18-21,共4页North Rice

基　　金：国家科技支撑计划/2013BAD05B07;中央财政农业科技推广示范/GCNT-LN-16-2

摘　　要：采用小区对比试验方法,探讨了氮肥施入量12.0、15.0、18.0、21.0、24.0 kg/667 m2对水稻新品系盐粳377产量的影响。结果表明,施氮量21.0 kg/667 m2的处理获得单产629.2 kg/667 m2,比5、3、2、1处理分别增产了0.7%、3.1%、7.6%、13.5%。随着施氮量的增加,各处理主茎叶片数、单位面积最高茎蘖数与收获穗数、齐穗期叶面积指数与剑叶净光合速率、成熟期干物质积累量随之增加,各处理茎蘖成穗率、有效叶面积率、齐穗后干物质积累量占籽粒产量百分比、收获指数、结实率、千粒重随之降低,各处理每穗成粒数、齐穗期高效叶面积率则表现为先增后减。结合该品种的大面积示范结果,与盐粳377高产高效栽培技术相配套的适宜施氮量(N)20.0 kg/667 m2左右。The effect of Nitrogen amounts which were 12.0 kg/hm2,15.0 kg/hm2,18.0 kg/hm2,21.0 kg/hm2,24.0 kg/hm= on the yield of Yanjing-377 were discussed through comparative test. The results indicated that the yield can achieve 629.2 kg/667 m2 by using 21.0 kg/667 m2 of Nitrogen amounts, which increasing production by 0.7%,3.1% ,7.6%, 13.5% than treatment 5, 3, 2, 1. along with the increasing of Nitrogen amount, ear number of main culm, tiller number and panicle number of unit area, LAI in full heeding stage, photosynthetic rate of flag leaf and dry weight accumulation of maturity can increase correspondingly, the effective panicle percentage, effective leaf area rate, the rate that dry matter accumulation in the grains yield after heading, harvest index, seeding rate and thousand seed weight decreased accordingly, grains per panicle and effective leaf area rate of full heading stage firstly increased and then decreased, combining the test results of large area, it get proper fertilization nitrogen was 20.0 kg/667 ms.

关 键 词：水稻 盐粳377 施氮量 叶面积指数 叶净光合速率 干物质积累量 产量 

分 类 号：S511.062[农业科学—作物学]