线虫破坏大豆根系的特征是：根系粗糙。
Nematode damage to the soybean roots is characterized by coarse roots.
大豆根系生长的三个特点是大豆肥田的机制。
The 3 particular properties of soybean roots growth are the mechanism of soybean for fertilizing soil.
大豆根系对养分的吸收机制只是所有作物吸收养分的最一般问题的一部分。
The mechanism of nutrient uptake by soybean roots is only part of a more general problem on the subject involving all plant species.
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