氮磷对菘蓝营养生长期根、冠生长的影响

Effects of Nitrogen and Phosphorus on Root and Shoot Growth of Isatis indigotica Fort

通过盆栽试验,研究了不同的氮磷处理对菘蓝(Isatis indigoticaFort.)的株高、叶面积、叶绿素、可溶性蛋白、根、冠干物质积累、根长、根粗、根冠比等指标的影响。结果表明,氮对菘蓝的株高、单株叶面积、叶绿素的含量、干物质积累均具有明显的促进作用,且氮磷配合施用时效果更好;氮、磷均可以提高菘蓝可溶性蛋白的含量,单施氮肥降低了菘蓝的根冠比,而单施磷肥增大了菘蓝根冠比,以菘蓝根和叶同时采收为目的时,以处理6的效果最佳。

Pot experiments applying N and P fertilizers were carried out to study the effects of the fertilizers on shoot height, single leaf area, chlorophyll, soluble protein, dry matter of root and shoot,length and diameter of root, and root： shoot ratios of woad （Isatis indigotica Fort. ）. The results showed that N fertilizer have obvious positive effects on the shoot height, single leaf area, chlorophyll, and dry matter accumulation. The content of soluble protein was increased after application of N and P fertilizers. R/S ratios was decreased when N fertilizer applied alone, and increased after P applied. The best performance was the sixth treat in the treatment of mixed application .