有关农业专家和研究人员为了改造苹果红黑点病源,通过改善树体光照、减少病源、加强水肥管理等方面做了实验探索,但效果甚微。这也让果农很是苦恼。苹果红黑点病是由于缺素、果园环境、气候、纸袋质量等综合因素引起 Relevant agricultural experts and researchers have done some experiments to improve the light source of apple red spots, reduce the pathogen, and strengthen the management of water and fertilizer, but the results are very little. This is also very annoying fruit farmers. Apple black and red dot disease is due to lack of elements, orchard environment, climate, quality of paper bags and other factors