我省果产区普遍存在粮果争肥的矛盾,果树施肥严重不足。因而不少地方造成果树树势弱,结果晚,产量低,品质差,病害重。实践证明,大种绿肥是自力更生解决果树施肥的有效措施。1974年我们二场果园(平地棕黄土)对7年生的红星苹果(密度7×7米)分别进行了农肥(400斤猪圈粪/株),绿肥(100斤2年生白花草木樨/株)和化肥(5斤硫铵、3 Fruit-growing areas in our province widespread conflict between grain and fruit fight fertilizer, fruit trees serious lack of fertilization. As a result, in many places, fruit tree vigor is weak, and the result is late, the yield is low, the quality is poor, the disease is heavy. Practice has proved that a large variety of green manure is an effective measure to solve fruit tree fertilization. In 1974, our two orchards (plain brown loess) were fertilized with 400-year-old pig manure / strain and 7-year-old Red Star apple (density: 7 × 7 meters) And fertilizer (5 pounds of ammonium sulfate, 3