作　　者： ; ; ; ;

机构地区： 华南农业大学资源环境学院

出　　处： 《土壤通报》 2010年第3期660-663,共4页

摘　　要： 利用促释材料对中低品位磷矿粉进行活化,并通过连续水浸提、盆栽试验,研究活化磷矿粉的磷素动态释放特性和肥效。结果表明:与磷矿粉相比较,两种促释磷矿粉连续浸提的水溶性磷累积量分别是磷矿粉处理的1.46、2.53倍;促释磷矿粉的玉米生物量、吸磷量显著高于磷矿粉处理,其中SMS活化磷矿粉的玉米生物量最高,与过磷酸钙肥效相当。 Several kinds of promoted- materials were applied to activate low- grade phosphate rock to manufacture promoted- release phosphate rocks （PRPr）, and the dynamic release characteristics and fertilizer effect of PRPr were studied through continuous water extraction and a pot experiment. The results of continuous water extraction indicated that compared to phosphate rock, water- soluble phosphorous accumulative release rates of two PRPrs were 1.46 and 2.53 times higher. The results of the pot experiment showed that the corn biomass and phosphorus uptake of PRPrs were obviously higher than that of phosphate rock, the treatment with SMS activated phosphate rock had the highest corn biomass, showing the same fertilizer effect as super phosphate.

关 键 词： 磷矿粉 促释 动态释磷 玉米

领　　域： [农业科学] [农业科学]