The importance of mineral materials in the development of ecological farming is discussed.

论述了矿物材料在建设生态农业上的作用。

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You can experiment, but experimenting is the beginning as well as the end of ecological farming.

试验吧，试验既是生态农业的开始，也是生态农业的结束。

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So the organic farming way was beneficial to the restoration of natural enemies and the improvement of the ecological environment.

因此，有机耕作有利于自然天敌的恢复、保护，有利于稻田环境的改善。

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The number of organic farms was rising in Germany before the scare, said Thomas Dosch, head of the ecological farming association, Bioland.

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The organization accepts sponsorship dollars from food-related companies that pay family farmers a fair price, have ecological standards for farming practices, and make their commitment to sustainable and family farming known to their customers.

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Critics of this kind of farming point to its limited social benefits, and to its ecological costs, which include soil erosion and the heavy use of chemicals.

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