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机修梯田经验选登机修梯田四大优越性（１）速度快一台东方红－７０型推土机，每个台班（１０小时）可修造坡度在１０度左右的梯田６６７平方米（１亩）．相当于１５０个强劳动力一天的工作量。（２）成本低机修６６７平方米（１亩）动工３００立方米左右，需开支３００元...
(1) Fast One Dongfanghong-70 bulldozer can build 667 square meters (1 mu) of terraces with a slope of 10 degrees for each shift (10 hours). Equivalent to 150 strong labor day workload. (2) low cost repair 667 square meters (1 acre) to start about 300 cubic meters, need spending 300 yuan ...