一、試驗目的测定磷矿粉和过磷酸鈣对油菜的增产效果,为进一步提高油菜产量寻找有效措施。二、試驗材料及方法本試验在汉中盆地水旱兩作水田內进行,土壤为粘壤土,PH值为6.3,无石灰性反应和可溶性磷酸。供試磷肥为南郑县碑壩磷矿粉(含磷11.308％)和日本制过磷酸鈣。磷肥分別 First, the purpose of the test Determination of phosphate rock and superphosphate yield of rape on the increase in order to further improve the yield of rape to find effective measures. Second, the test materials and methods In the Hanzhong basin water and drought for two paddy fields, clay soil for soil, PH value of 6.3, non-lime reaction and soluble phosphoric acid. Phosphate fertilizers for the pilot project in Nanzheng Bei phosphate rock (11.308% phosphorus) and Japanese-made superphosphate. Phosphate fertilizer respectively