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目前我省正在推广使用磷矿粉,但对磷矿粉在稻田直接施用效果如何,以及如何来提高磷矿粉的有效性等问题,还存在着一些不同看法。本试验是通过应用放射性磷矿粉,来研究在不同土壤类型条件下,磷矿粉对水稻直接施用的效果,磷矿粉与少量过磷酸钙配合施用的效果,及磷矿粉与有机肥混合堆沤后的有效性等问题,为合理施用磷矿粉提供一些确切的依据。
At present, the province is promoting the use of phosphate rock, but there are still some different opinions on the direct application of phosphate rock in paddy fields and how to improve the effectiveness of rock phosphate rock. In this experiment, the effect of direct application of phosphate rock on rice under different soil types was studied by applying radioactive phosphate rock. The effect of application of phosphate rock with a small amount of superphosphate and the combination of phosphate rock and organic fertilizer were studied The validity of plutonium and other issues, to provide some accurate basis for the rational use of phosphate rock.