One of the most important part of gardening is mulching.

其中最重要的部分是园林复盖。

The mulching effect decreased with the increase of soil depth.

随土壤深度增加，覆盖的增温效果下降。

Mulching heightened the nutrient concentrations of poplar leaves.

覆盖提高了杨树叶片养分浓度。

Mulching is one of the best things people can do for their plants.

农地膜是农民为植被做的保护最好之一。

If your lawn is small, the large size mulching blades are not necessary.

如果你的草坪小，叶片复盖面积大都是没有必要的。