通过小区和大田试验 ,研究石灰性土壤上几种磷矿粉对油菜的肥效 .结果表明 ,几种磷矿粉对油菜的增产效果都很显著 ,油菜对磷矿粉利用能力强和土壤供磷水平低是增产的主要原因 ,磷矿粉的相对肥效以摩洛哥最高 ,次为荆襄 ,再次为开阳 ,锦屏最差 .肥效高低与磷矿粉中枸溶性磷的含量密切相关 Through field plot and field experiment, the effect of several phosphate rock on the rapeseed was studied in calcareous soil.The results showed that the effect of several phosphate rock on rapeseed yield was significant, the ability of rapeseed to use phosphate rock and phosphorus The low level is the main reason for increasing production, the relative fertilizer effect of phosphate rock powder is the highest in Morocco, the second is Jingxiang, the second is Kaiyang, Jinping is the worst.The fertilizer effect is closely related to the content of soluble phosphorus in phosphate rock