摘要
以蓖麻为材料,在苏北沿海滩涂上研究了不同施氮水平(0、75、150、225 kg/hm2)与施磷水平(0、30、60、90 kg/hm2)对蓖麻生长及子粒产量的影响。结果表明,氮、磷肥对蓖麻生长、子粒产量影响显著。适宜的氮、磷水平可促进蓖麻生长,增加子粒产量。影响蓖麻生长及子粒产量的主要因素是氮肥,磷肥次之,且N3P3处理组合,即150 kg/hm2的施氮量,60 kg/hm2的施磷量最有利于蓖麻的生长及子粒产量的增加。
A field experiment was carried out to study the effects of N application（0,75,150,225 kg/hm2） and P application（0,30,60,90 kg/hm2） on the growth and the yield of castor in the coastal area of northern Jiangsu province.The results showed that N and P fertilizers had significant effect on the growth and grain yield of castor.Appropriate amount of N and P could promote the growth and increase the grain yield.Through the analysis of alternant effects,N fertilizer was the key factor influencing the growth and grain yield of castor compared with P fertilizer.The optimum N and P fertilizer application amount to castor was 150 kg/hm2 N with 60 kg/hm2 P.
出处
《湖北农业科学》
北大核心
2011年第8期1540-1543,共4页
Hubei Agricultural Sciences
基金
国家公益性行业(农业)科研专项经费项目(200903001)
江苏省农业科技自主创新资金项目[CX(10)219]
关键词
蓖麻
氮肥
磷肥
产量
castor
nitrogen（N）
phosphorus（P）
yield
