subsoil condition
下层土壤条件
以上为机器翻译结果，长、整句建议使用 人工翻译 。
In the condition of slight stress of soil water and nitrogen, the LrD in the subsoil is increased, but the senescence rate of the root is higher during the final growth stage of crops.
在水分稍有亏缺条件下，土层中部根长密度增加，但后期衰亡速率也较快。
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