在以前研究磷在土壤中移动的方法,一般都应用化学测定的方法,这些方法都较费时、繁琐,且得出的材料精确度不很高。土壤中的磷,不管从地球化学或经济观点来看,它的移动、分布都是极其重要的,特别在对加拿大杨(Populus Canadensis)这样需磷较多的速生用材树种(每百克加杨叶子的干物质中含 P_2O_5量为0.4克左右)来讲,更显得重要。它在土壤中的移动与分布会直接 In the previous study of phosphorus moving in the soil, the methods of chemical determination were generally applied. These methods are time-consuming and cumbersome, and the accuracy of the obtained materials is not very high. Phosphorus in the soil, whether it is geochemically or economically, is extremely important for its movement and distribution, especially in poplar species such as populus canadensis, Leaf dry matter containing P_2O_5 amount of about 0.4 grams) is concerned, even more important. Its movement and distribution in the soil will be direct