But the big function of soil and water conservation and the improvement of soil texture and seedling nursing have not been studied systematically.
但对它强大的水土保育功能(抑制水土流失、改善土壤质地)，以及与水土保育相关联的幼苗保育功能等方面研究较少。
Boundary and assessment for major engineering with the function of soil and water conservation can reflect the basic idea of "prevention in the first place and integrating prevention with control".
对主体工程具有水土保持功能的工程的界定和评价，可以体现“预防为主，防治结合”的基本理念。
Under the similar site condition, the secondary forest and the mixed plantations had greater water conservation function and better maintenance of soil fertility than the pure stands did.
在相同的立地条件下，天然次生林和混交林具有更好的维持地力作用和更高的水源涵养功能。
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