It's an effective way to maintain soil fertility.

这是保持土壤肥力的一个有效办法。

youdao

The interaction could enhance soil fertility effectively, improve nutrient status in soil and nutrient absorption in the rhizosphere, and also maintain plant productivity.

互作可以有效地提高土壤肥力，改善土壤的养分状况和根际养分吸收环境，维持植物生产力；

youdao

A good dose of muck helps maintain fertility and returns useful organic matter to the soil.

好肥料可以使土壤肥沃并且还可以改善土壤的有机成分。

youdao

Farmers lack enough inputs to maintain soil fertility is parts of many developing countries, especially in Africa south of the Sahara.

VOA: special.2009.07.28