应用磷核素研究石灰性土壤中磷酸铁盐对水稻磷营养的贡献ＳｔｕｄｙｏｎｔｈｅＣｏｎｔｒｉｂｕｔｉｏｎｏｆＩｒｏｎＰｈｏｓｐｈａｔｅｉｎＣａｌｃａｒｅｏｕｓＰａｄｄｙＳｏｉｌｔｏＰｈｏｓｐｈｏｒｕｓＮｕｔｒｉｔｉｏｎｏｆＲｉｃｅＰｌａｎｔ１９９２～１９９５... Study on the contribution of ferric phosphate in calcareous soi......