A method is presented for comparing the effect of corn-stalk biochar, rice-husk biochar and pine biochar on the migration and leaching of phosphorus in black soil. The process involves the addition of different biochar contents to black soil and research on soil column simulations. The results showed that pine biochar has a better effect on reducing the leaching volume, and the cumulative leaching solution volume was negatively correlated with the application rates of pine biochars. In addition, at an application rate of 6%, the cumulative volume of the leaching solution was significantly lower than that of the other biochar treatments. When 1.2% of the above three biochars were added in the black soil, the pine biochar produced the lowest phosphorus cumulative leaching amount. The effects of the biochar treatments on reducing the vertical migration of phosphorus were as follows: pine biochar > corn-stalk biochar > rice-husk biochar and 1.2% > 0.6% > 3.6% > 6%. These results indicated that a suitable biochar can effectively reduce the vertical migration of phosphorus and reduce the leaching losses in black soil.

提出了一种比较玉米秸秆生物炭，稻壳生物炭和松木生物炭对黑土中磷迁移和淋失的影响的方法。该过程涉及向黑土中添加不同的生物炭含量，并进行土柱模拟研究。结果表明，松木炭对降低浸出量有较好的效果，且浸出液的累积量与松木炭的施用量呈负相关。另外，在6％的施用率下，浸提溶液的累积体积显着低于其他生物炭处理的体积。当在黑色土壤中添加上述三种生物炭的1.2％时，松木生物炭产生的最低磷累积淋失量。生物炭处理对减少磷的垂直迁移的影响如下：松树生物炭>玉米秸秆生物炭>稻壳生物炭和1.2％> 0.6％> 3.6％> 6％。这些结果表明，合适的生物炭可以有效地减少磷的垂直迁移并减少黑土中的淋失。