Baiquan county in Heilongjiang Province suffered the rainstorms with seriouslosses from June to August in 1991 after the flooding disasters

the authors immedi-ately made a field survey of 1.88 million mu of farmlands under better comprehensivecontrol over water and soil loss. It is estimated in accordance with the measureddata from the experimental plots that there is an average reduction of 37% of surfacerunoff and 56% of soil loss in the controlled area in comparison with those in theuncontrolled area

of which 11 pilot small wetersheds have shown a better effect upon the reduction of runoff and sediments. At the same time

the authors made adeep thought about water and soil conservation work in the county through fieldsurveys and analysis

and pointed out some existing problems and the measures totackle them in water and soil conservation.