将枯柳枝、银杏叶、水杉叶、枯竹竿、梧桐叶和枯葡萄藤等6种不同碳/氮(C/N)值含量的植物体浸泡在生活污水中，并测定其对生活污水中氮(N)和磷(P)含量的影响。研究结果表明，除银杏叶外，其余5种植物均有不同的除N能力，其中枯柳枝的除N效果最好，能在40 d内将污水中的总氮(TN)含量从11.09 mg/L降到0.48 mg/L，去除率为95.67%，去除效果最差的水杉叶也可将污水中的TN含量从11.09 mg/L降到1.39 mg/L，去除率为87.47%。所选6种植物均无除P能力，并且在浸泡过程中均有P释放致使污水中P含量升高。

Six sorts of plants, i.e., willow branches, gingkgo leaves, bamboos, grapevines, cotoier leaves and metasequoia leaves, were immersed into sewage, and then, the TN and TP content in the sewage were measured. The test results show as follows: All of the five sorts of plants except gingkgo leaves possess the ability to remove N from sewage. The willow branches have the best effect among them, can reduce the TN from 11.09 mg/L to 0.48 mg/L, and its desewerage rate is 95.67%; the worst effect is metasequoia leaves, it only can reduce the TN from 11.09 mg/L to 1.39 mg/L and the desewerage rate is 87.47%. But all of these six sorts of plants con not remove P from sewage, on the contrary, would release P into sewage and then cause the increase of P content in the sewage.