论文部分内容阅读
广西融安县沙子乡沙子村沙子屯果农说,他5年前种植的50多亩约5000多株蜜柑最近患了不知名的黄叶病,今春准备开花挂果的300多株蜜柑正一棵棵死去,面临着绝收的危险。他查看了有关书籍,未发现针对这种病的介绍。有专家认为,可能是急性炭疽病引起的叶黄、枝枯和大量落叶。一、发病环境条件该病在高温多湿的气候条件下容易发生,在华南柑橘产区一般在3月上旬至3月下旬为当年春梢嫩梢发病
In the village of Shazi Tuen, Shazi Village, Shazi Township, Rongan County, Guangxi, he said that about 5,000 more than 5000 types of mandarin oranges from 50 mu he had planted five years ago recently suffered from an unknown yellow leaf disease. More than 300 strains of mandarin oranges ready for flowering and fruiting this spring are being dead. , Faced with the risk of failure to take. He checked the books and found no introduction for the disease. Some experts believe that may be caused by acute anthrax yellow leaves, branches and a large number of deciduous. First, the incidence of environmental conditions The disease is prone to occur in hot and humid climates, citrus production in southern China generally in early March to late March when the shoots of young shoots