Method, Effect and Water-salt Dynamics by Furrow-Ridge to Emprove High Salinized Grassland EFFECTS OF RIDGE CULTURE ON GRAIN YIELD AND WATER USE EFFICIENCY OF WINTER WHEAT AND SUMMER MAIZE Study of the changes of the rice yield and soil fertility on the paddy field under long-term no-tillage and ridge culture conditions Remediation effect of the combination of ditching drainage and agronomic managements on gleyed paddy field in Poyang Lake Region, China