The conventional tillage system, such as harrowing, weeding by dig-ging and tillage rotation, etc.
中耕除草、深翻轮休等传统耕作制度，常常造成严重的水土流失。
In view of tillage methods, the shifting agriculture generally achieved better biological effects than the conventional tillage system.
从耕法上看，轮耕法所获得生物效应普遍好于常规耕法。
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