Analysts of the ecological and economic benefits of different tillage systems in arid and semi-arid regions

Results from three years’experiments showed that the minimum tillage for winter wheat and zego tillage for maize，which could improve the sustainable development of agrlculture and fully utilize the rural natural and economic sources，was the optimum mechanization tillage system in the arid and semi-arld regions with two crops a year planting pattern by comparing different tillage systems.