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磷灰石肥效试验的工作于1951年秋季起在南昌甘家山红壤试验场开始进行,195(?)—1953年间连续种植三季作物的试验结果,会经先后写成两次报告。现在我国的(?)矿巳经比较有大量开探,这项原料直接当做肥料施用,估有特殊重要的地位。兹将19(?)
The apatite fertilizer efficiency test started in the Ganjia red soil test site in Nanchang in the autumn of 1951. The results of the continuous cropping three-season crops between 195 (?) - 1953 will be reported twice in succession. Now China’s (?) Ores have been more open-cut exploration. This raw material is directly applied as a fertilizer and is estimated to have a special and important status. 19 (?)