施磷对豌豆产量及其构成因素的影响

采用单因素随机区组试验,分析了不同施磷水平对西藏地区豌豆新品种藏豌1号生育进程、产量及其产量构成因素的影响。结果表明,在不施氮肥或氮肥施用量一致的情况下,施磷有助于缩短豌豆生育日期,增加株高、单株荚数、百粒重、单株产量、主茎分枝等。产量分析结果表明,随着施磷量的增加,产量呈先增加后降低的趋势;施磷可增加经济产量0.4%~6.5%,增加生物产量10.4%~15.3%,当施磷水平为375kg/hm ²时,豌豆产量最高,经济产量达6 467kg/hm ²,生物产量达12 095kg/hm ²。

Effects of Phosphorus on Pea Yield and Its Components

By using single factor randomized block trial, the effects of phosphorus on growth characters, yield and yield components of a new pea variety (Zang wan No.1) were analyzed in this study.The results showed that phosphorus could shorten the growing period, increase plant height, 100-grain weight, yield per plant and branches on main stem. With the increase of the application amount of phosphorus, the yield was increased first and then decreased. Phosphorus could increase the economic yield by 0.4%~6.5% and biological yield by 10.4%~15.3%.With the phosphorus 375kg/hm ², the economic yield and biological yield of pea reached the highest of 6 467kg/hm ² and 12 095kg/hm ², respectively.