防止土壤板结层

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【正】 消除土壤板结层通常用机械处理的方法,这种办法需要额外的劳力、燃料,并会使土壤过于压实。 能不能防止板结层的形成呢? 许多国家都在寻找一些物质,在播种的同时能避免板结层的出现。其中的一种化合
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