上海郊区柑桔园应注意炭疽病的防治柑桔是上海郊区的主要栽培果树。１９９３年冬末至１９９４年初春，位于上海市东南的南汇县泥城乡兴隆村一处桔园发生严重落叶。该桔园为温柑尾张、兴津等品系，９年生。经观察，一般落叶率约３０％，严重树达６０％—７０％，落叶部位主... Citrus orchards in suburban Shanghai should pay attention to the prevention and treatment of anthracnose Citrus is the main cultivated fruit tree in the suburbs of Shanghai. In the late winter of 1993 to the early 1994, a serious deciduous crop occurred in an orange orchard at Xinglong Village, Mudao Township, Nanhui County, southeast of Shanghai. The Orange Garden is Wenkewei Chang, Xing Jin and other strains, 9 years old. After observation, the general rate of about 30% of deciduous trees, severe trees reach 60% -70%, deciduous parts of the main ...