国营刘家站垦殖场,位于赣东北余江县境,全场为广阔丘陵地带,成土母质为红砂岩风化红壤和红色粘土红壤。近十多年来,在推广使用氮、磷化肥基础上,对水稻、花生、大豆、油菜、红薯、绿肥等十多种作物又进行了增施钾肥的多点试验。1977年起,全场大面积推广使用了钾肥,促进了粮、豆、油作物的大幅度增产。四 The state-run Liujiaba reclamation farm is located in the Yujiang County in northeastern Jiangxi Province. The whole area is vast and hilly. The red soils dominated by red sandstone are red soil and red clay red soil. In the recent ten years, more than ten kinds of crops such as rice, peanut, soybean, rape, sweet potato and green manure have been tested with more potassium fertilizers based on the promotion of nitrogen and phosphorus fertilizers. Since 1977, large-scale popularization and utilization of potash fertilizer has promoted the substantial increase of grain, beans and oil crops. four