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。
Certified Organic by Oregon Tilth.
经过俄勒冈州有机认证。
Tilth 's the quality of a soil which makes it easy to cultivate and easy for the roots of plants to grow.
耕性指的是使土壤易于耕作，根系易于生长的一种土壤性状。
Tilth 's the quality of a soil which makes it easy to cultivate and easy for the roots of plants to grow.
耕性指的是使土壤易于耕作，根系易于生长的一种土壤性状。
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