石灰性土壤上利用天然沸石活化磷矿粉的初步探讨

The Preliminary Study on Using Natural Zeolites asActivator of Phosphate Rocks in Limy Soils

在石灰性土壤上以磷矿粉和天然沸石为试材进行盆栽试验，结果表明，在石灰性土壤上沸石对磷矿粉具有较强的活化作用，能使土壤速磷增加１４．１％～５０．５％，植物磷素增加５．０％～２１．７％，大豆产量增加９．８％～２０．７％，另外，沸石的施用量也并非越多越好，在本试验中，沸石以每盒施１２．５ｇ的效果最好。

In order to learn how the natural zeolite influences the phosphate rocks in limy soils,a pot experiment was arranged. The results indicated that the natural zeolites had better activation to the phosphate rocks, the soil avaible P content had increased by 14. 1 % ~ 50. 5 %, theplant P content had increased by 5. 0 % ~ 21 .7 %, and the soybean yield had increased by 9. 8 %~ 20.7 %. Moreover, the amount of natural zeolites application wasn't the more the better.12. 5 g/pot acheieved the best result in this experiment.