苹果树的粗皮病,主要发生在枝干。对苹果树的树势,产量及果品质量均有严重的影响。在辽宁省粗皮病多发生在南部及东部丘陵山地。发病面积之广,危害程度之大,成为我省果树栽培的一大障碍。我们在进行《腐植酸复合肥对苹果树增产效果》的试验研究中,发现试验小区的粗皮病发病情况不 The bark disease of the apple tree occurs mainly in the branches. Apple tree tree potential, yield and quality of fruit have a serious impact. In Liaoning Province, dough disease occurs in the southern and eastern hills and mountains. The incidence of a wide area, the degree of harm, as a major obstacle to the cultivation of fruit trees in our province. We are in the “humic acid compound fertilizer on the apple tree yield effect” experimental study found that the experimental plot of the incidence of dough disease is not