氮肥运筹对杂交粳稻‘申优26’产量及品质的影响

Effects of nitrogen application on yield and main quality traits of japonica hybrid rice‘Shenyou 26’

为进一步明确氮肥运筹对杂交粳稻新组合‘申优26’产量及品质性状的影响,通过不同施氮量和氮肥基蘖肥与穗肥的配比试验,对杂交粳稻新组合‘申优26’的品质和产量性状进行分析。结果表明:在基肥与追肥比例为8∶2的条件下,杂交粳稻新组合最佳氮肥施用量为240 kg∕hm^(2);在总施肥量纯氮270 kg∕hm^(2)条件下,优质化栽培氮肥基肥与追肥比例以8∶2为宜。

In order to further clarify the effect of nitrogen fertilization on the quality and yield traits of a new japonica hybrid rice combination‘Shenyou 26’.In this paper,the quality and yield characters of a new japonica hybrid rice combination‘Shenyou 26’were analyzed through the experiment of different nitrogen application rates and the ratio of nitrogen base and top dressing.The results showed that under the condition of 8∶2 ratio of base fertilizer to top dressing,the optimum nitrogen application amount of the new japonica hybrid rice combination was 240 kg∕km2;Under the condition of total fertilizer pure nitrogen 270 kg∕hm^(2),the ratio of base fertilizer to top dressing in high quality chemical cultivation was 8∶2.