The root distribution in different tilth layer is different.
各品种在耕层不同深度分布也不同.
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So microflora increase tilth.
也就是说微生物群落能提高耕性.
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Some of these provide tilth to a soil.
有些有机肥是用来改善土壤的耕性的.
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The distribution position of cotton root system in the tilth is closely related with cotton yield.
棉花根系在耕层分布的位置与产量密切相关.
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