摘要
通过中稻氮肥效应试验,结果表明:在所设处理中,随施氮量的增加,水稻产量增加,并获得了氮肥效应函数方程Y=-0.65 X2+24.88 X+443.1.通过对植株吸氮量和氮肥利用率的比较,表明当地施氮水平(每667m2施纯氮10kg)的氮肥利用率较高,净产值和产投比较大,能增加稻谷产量和产值,适合当地当前中稻生产实际.
Through N fertilizer experiment in medium hybrid rice,the results showed that： in the set treatments,rice production increased with the increased amount of nitrogen,and received N fertilizer response function Y=-0.65X2＋24.88X＋443.1.Through the plant N fertilizer requirement and N fertilizer utilization ratio comparing between rice at different N levels,showed the local N level（N 10 kg for 667 m2） had high N fertilizer utilization ratio,high net output and high ratio of output to input,and could increase rice yield and value,suitable for local current medium hybrid rice production.
出处
《湖北大学学报（自然科学版）》
CAS
北大核心
2010年第4期451-453,462,共4页
Journal of Hubei University：Natural Science
基金
国家现代农业水稻产业技术体系项目(2009-2012)资助
关键词
水稻
氮肥试验
利用率
净产值
rice
N fertilizer experiment
utilization ratio
net output
