不同施肥水平对3个扁豆品种生长发育及前期产量的影响

为了研究不同施肥水平对扁豆生长发育及前期产量的影响,为扁豆的高产栽培提供理论依据。采用田间正交组合试验,研究不同施肥水平对湘扁豆1号、湘扁豆2号、湘扁豆3号生长发育及前期产量的影响。苗期湘扁豆1号比湘扁豆2号、湘扁豆3号高1.0~2.5cm。在营养生长阶段,高氮处理植株的主茎高度明显高于低氮处理的;在生殖生长阶段,高磷处理植株的始花期和始荚期都比低磷处理的早,且每花序结荚数比低磷小区多。3个扁豆品种之间前期产量存在显著差异,而其他因素处理的前期产量都未达到显著水平。氮肥促进扁豆的营养生长,磷肥促进扁豆的生殖生长。不同施肥水平对扁豆品种前期产量没有影响。

Effects of the Different Fertilization Levels on the Growth and Development, and Prophase Yield of Dolichos lablab L.

The research was constructed to study the effects of different fertilization levels on the growth and development,prophase yield of Dolichos lablab L.,so as to provide the theoretical basis for the high-yield cultivation of Dolichos lablab L.In field experiments with orthogonal combination design,the effects of different fertilization levels on the growth and development,prophase yield of Xiangbian 1,Xiangbian 2 and Xiangbian 3 were studied.During seedling stage,the plant height of Xiangbian 1 was 1.0～2.5 cm higher than that of Xiangbian 2 and Xiangbian 3.During the nutrition growth stage,the height of the main stem in high nitrogen treatment was higher than that in low nitrogen treatment.During the reproductive growth stage,the initial flowering stage and the beginning stage of pod formation in high phosphorus treatment were earlier than those in low phosphorus treatment and the pod numbers per inflorescence in high phosphate treatment were more than in low phosphate treatment.The prophase yields of Dolichos lablab L.had a significant difference among 3 varieties,while the prophase yields in treatments with other factors couldn't reach the significant level.Nitrogen fertilizer promoted the vegetation growth,while phosphorus fertilizer promoted the reproductive growth.Different fertilization levels had no effect on the prophase yield of Dolichos lablab L.