摘要
通过以氮定磷试验,在低磷土壤、施钾肥基础上,研究玉米施磷肥的生物效应。结果表明,施磷肥在玉米各生育期表现出明显的生物效应,施磷比无磷处理苗期根干重增加26.5%～188.2%,最大叶面积指数增加0.25～0.58,光合势和各生育期光合生产率明显提高,果穗灌浆速度加快,千粒重和产量显著提高。
On the base of tow phosphorus soil, studying biological effect of phosphorus fertilizer application, the results showed phosphorus application behaved significant biological effects at the whole growing stage. Phosphorus application compared with no-phosphorus treatment, root dry weight increased 26.5% - 188.2% at seeding stage, max-leaf area index increased 0.25 - 0.58, LAD and photosynthesis productivity improved significantly, grain filling accelerated, 1 000-grain weight and yield increased remarkably.
出处
《玉米科学》
CAS
CSCD
北大核心
2008年第5期120-122,共3页
Journal of Maize Sciences
关键词
玉米
磷肥
生物效应
产量
Maize
Phosphorus fertilizer
Biological effects
Yield
