Ancient people used manure spreading, plowing, planting and reforming saline-alkaline soil and such measures to improve soil.

古代人民通过粪肥施用、耕作、种植、盐碱土改造等措施，来改良土壤。

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I saw many people spreading manure in the fields.

我看见许多人在地里施肥。

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Rachel Wyatt, of the MCS, said farmers must "look at land management practices, put up more fences to keep cattle out of rivers and change patterns of manure spreading".

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Other culprits include the application of fertilizer in the fall, when the ground is bare, and the spreading of manure on the surface, instead of into the soil.

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