Review of impacts of no-tillage on crop yield and economic benefit

On the base of evaluation of previous research achievements on no-tillage,the paper summarizes the influences of no-tillage technology on crop yields and economic benefit.The results show that in the arid area of North China,if the rotation systems of different crops and the scientific weeding method are adopted,no-tillage technology could increase grain yield,and the output benefit of no-tillage is higher than that of conventional tillage.