However, so far, the coexisting mechanism of the exploiter and the mutualistic system still remains unclear.

非传粉小蜂则是该系统的资源掠夺者，但它与该系统共存的机制仍不清楚。

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Based on the mutualistic symbiosis relationship of rice and duck, jointed with no-tillage technique, the new no-tillage system of raising duck in paddyfield was formed.

在利用稻鸭互利共生的关系的基础上，将免耕技术引入稻田生态系统，形成稻田免耕养鸭技术新体系。

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