黄麻土工布降解对土壤肥力的影响

测定使用一段时间后的黄麻土工布相对重量及其纤 维素、木质素、果胶含量的变化。结果表明，各试验小区土工布均有不同程度降解。在覆盖土工布加裸露方式处理试验小区，土工布纤维素降低8.80%、木质素降低3.48%、果胶降低2. 21%；在覆盖土工布加种龙须草方式处理试验小区，土工布纤维素降低4.22%、木质素降低1. 52%、果胶降低0.39%。6个试验小区土壤全N，P，K含量分析结果表明，覆盖土工布试验小区与不覆 盖土工布试验小区相比，土壤N，P，K含量富集明显，土壤肥力增强。

Effect of jute geotextiles biodegradation on soil fertility

Experiments were carried out to study the changes of jute geotextiles' relative weight and the content of cellulose,lignin and pectin after the jute geotextiles were used for a long time.The results showed that all of the jute geotextiles had biodegraded in varying degrees.In the experiment area covered by geotextiles without any plant,the content of the cellulose ,lignin and pectin reduced 8.8%,3.48%, 2.21% ,respectively.In the experiment area covered by jute geotextiles with planted chinese alpine rush,the jute geotextiles' cellulose ,lignin and pectin reduced 4.22%,1.52%,0.39%,respectively.The analysis results in the six experiment areas showed that the content of the N,P and K in the soil covered with jute geotextiles was obviously richer than that uncoverd,and the soil fertility improved.