密肥条件对杂交中籼稻产量及其构成因素的影响

以优质杂交中籼两优6326为材料,研究不同施氮量和密度对其产量及其构成因素的影响。结果表明:施氮量、密度对两优6326的产量有显著影响;225.0 kg/hm2施氮水平的产量最高,262.5 kg/hm2施氮水平的产量次之,以上两处理差异不显著,但比其他施氮处理极显著增产;密度以22.2万穴/hm2的产量最高,其次为33.3万穴/hm2,最低为16.7万穴/hm2。施氮量和密度对产量构成因素有不同的影响,其中对单位面积穗数影响最大,每穗总粒数次之,结实率相对较小,千粒重最为稳定。试验表明,两优6326适宜的施氮量为225.0kg/hm2,密度为22.2万穴/hm2。

Effects of Amount of Nitrogen Applied and Density on Yield and Its Components of Middle-season Indica Hybrid Rice

The effects of nitrogen applied and density on yield and its components of middle-season Indica hybrid rice Liangyou 6 326 were studied.The result as follows:The effects of amount of nitrogen applied and density on yield and its components of Liangyou6326 were obvious;The Grain output of amount of nitrogen applied was 225.0 kg/hm2 was tiptop,262.5 kg/hm2 took the second place;Compared to others nitrogen application,they were increase yield significantly.The Grain output of painting density was 22.2×104 hills/hm2 was tiptop,The second was 33.3×104 hills/hm2,The lowest was 16.7×104 hills/hm2;There was different function of yield components with different amount of nitrogen applied and density,the effect on panicles per unit area was most serious,total grains per panicle second,seed setting rate third,and 1000-grain weight least and the most stable too.Under conditions of this experiment,proper amount of nitrogen applied and density was 225.0 kg/hm2 and 22.2×104hills/hm2.