Diels in different development stages from zhangxian of gansu province was studied by simulating the way of rain eluviation .

以甘肃省漳县当归为材料，模拟雨水淋溶途径，研究了当归不同发育期的化感作用。

Therefore , autotoxicity was one of the factors leading to succession cropping obstacle , and rain eluviation was an important way of autotoxic chemicals releasing .

因此认为，自毒作用是造成当归连作障碍的因素之一，雨水淋溶是自毒物质释放的一条重要途径。