To facilitate its growth, we add soil around the bottom of the stalk.

为了促进作物生长，我们可在茎的周围培土。

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Once it reaches the surface of the soil, the slug undergoes another transformation: Most of the cells turn into a stiff stalk, while the others crawl to the top and form a sticky ball of spores.

一旦接触土壤表面，这条“鼻涕虫”就会发生另一种变形：大部分细胞变成一个硬柄，其余则的爬到顶端形成一个黏黏的孢子球。

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Because of the organic-matter decomposed by the pure stalk have not any soil to keep up, the relative content of organic-matter that can be distilled is the lowest(PS100) .

由于纯秸秆分解产生的腐殖物质，没有土壤来保持，其可提取腐殖物质的相对含量最低（PS100）。

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