氮肥不同施入量对水稻新品种富友33生育及产量的影响

采用小区对比试验方法,探讨了氮肥不同施入量对水稻新品种富友33生育及产量的影响。结果表明,增加氮肥施入量,可促进富友33单位面积收获穗数、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的增加;不利于其成穗率、齐穗期高效叶面积率与有效叶面积率、齐穗后干物质积累量占籽粒产量百分比以及收获指数的提高。在本试验条件下,施氮量(N)240.0 kg/hm2的处理E3获得单产9.22 t/hm2,比E4、E2、E5、E1处理分别增产了0.2%、3.1%、3.4%和7.3%。

Effect of Nitrogen Amounts on Growth Characters and Yield of New Rice Variety-Fuyou 33

Effect of nitrogen amounts on growth characters and yield of Fuyou 33 were explored by plot comparative test,the result indicated that increasing nitrogen amounts can increase the effective panicles per unit area,LAI in full heeding stage,photosynthetic rate of flag leaf and dry weight accumulation of maturity.Then,increasing nitrogen amounts against productive panicle rate,high-efficiency leaf area rate and effective leaf area rate of full heading stage,the rate that dry matter accumulation in the grains yield after heading and harvest index.Under the test,treatment E3 which using N 240.0 kg/hm2 can achieve 9.22 t/hm2,it increase yield 0.2%、3.1%、3.4% and 7.3% than E4,E2,E5 and E1.