Comprehensive evaluation of different conservation tillage technology model based on grey relation projection method

The purpose of the author was to use the grey relation projection method to evaluate the conservation tillage technology in western aeolian sandy soil area of Heilongjiang Province. The experimental field was elected in Dumeng Country Yixin town. The measure of the conservation tillage including covering film between furrows, integration technique of furrow damming and covering film between furrows, furrow damming, straw mulch. The purpose was to establish an appropriate conservation tillage technology model in this area. The results show that the four kinds of conservation tillage have different effect of water-saving and improve economic role. Their effects were that:, integration technique of furrow damming and covering film between furrows>;covering film between furrows>;furrow damming>;straw mulch>;CK.