去年秋季,我们选择河西、兰州和天水地区的川地灌溉果园和山地果园,对我省发生普遍、影响较大的果树缺铁性黄化病作了重点调查,基本查清了黄化病发生发展规律和主要发病因子,总结了群众防治经验,为今后进一步开展此项工作提供了依据。根据调查,我省河西、中部和东部均有黄化病发生,其中兰州、临洮、靖远和武威比较 Last autumn, we selected the irrigated orchards and the mountain orchards in Sichuan Province of Hexi, Lanzhou and Tianshui to survey the prevalence and prevalence of iron deficiency yellow disease in our province and found out the occurrence of yellowing disease The law of development and the main risk factors, summed up the experience of the people in prevention and treatment, and provided the basis for further carrying out this work in the future. According to the survey, there are yellow disease in Hexi, central and eastern China, among them Lanzhou, Linqu, Jingyuan and Wuwei