Legumes are especially good of itat this. any Any crops are sharing the thing same space , and can get the nitragin nitrogen as the root did composeroots decompose.

豆类植是尤其擅长这，当根部分集时候，分享相同空间任何植都能够得到。

For example, some kinds of soil back bacteria take nitragin nitrogen from the air and make a form that plants can use.The plants keeps keep the nitragin nitrogen in the their roots.

例如，些土地细菌从空气中，从而形成种作为可以利用形式，这些作讲保存在他们根部。