Special reporters from the newspaper: expert from the expert group of the newspaper, professor of Yangling Vocational and Technical College and expert on fruit and fruit Ma Zhifeng There are many rusts in apples, pears, and jujube growing regions. However, in actual production, the vast majority of fruit growers only know to see the disease and spray pesticides. They do not understand the specific characteristics of the disease, so that the quality of the fruit is seriously damaged, affecting efficiency. In this regard, Ma Zhifeng, a professor at the Yangling Vocational and Technical College, said that rust is a fungal disease that requires two host plants to transfer to host parasites. Cypress, Cypress, and T. cypress are the intermediate hosts of the rust winter rot. After the disease damages pear trees, apple trees and jujube trees, they will be transferred to cypresses for winter. When the spring is warm, the spores of overwintering rust will be blown onto the fruit trees by the wind and multiply, harming the new shoots, leaves and stalks of the trees. Young fruit. If conditions permit, spores of rust can drift 10 km in the wind. Therefore, cutting off the source of infection by the host host is crucial to prevent the occurrence of the disease. However, in actual production, due to lack of understanding of the features of rust occurrence in the fruit farms, and lack of guidance from professional plant protection personnel in the process of urban and rural construction and road greening, the lack of research on the suitability of the tree planting species in the area is the cause of the disease. Spreading and providing a barrier has caused the disease to multiply in some fruit areas and has become a major problem affecting the income of local farmers. In view of this situation, Ma Zhifeng reminded the broad masses of fruit growers and fruit industry municipalities and urban construction departments to prohibit cultivation of cypress trees such as juniper, cypress, and cypress in apple, pear and jujube producing areas. In particular, municipal, urban construction and other related departments cannot only consider the beauty when selecting green seedlings. They must consider the actual situation in the local area, and should scientifically plan the planting areas of cypress and apple trees, pear trees, etc., and try to cut off or reduce the transfer to the host. Infectious bacteria source. In this process, fruit industry bureaus, forestry bureaus, horticultural stations, and landscaping management departments in the region must make concerted efforts to set up fruit eugenics zones as pollution-free protection zones and remove sporadic cypress trees that have been planted in the region. Adjust the structure of garden tree species and replace cypress with high-rust-resistant species. Regarding the fruit areas that have been planted with cypress and can't be temporarily cleared, Ma Zhifeng suggested that all counties, townships (townships) and villages must strengthen their unified prevention and control, set up monitoring points, and provide relevant information to farmers in a timely manner. The fruit industry planted the village as a unit and set up a plant protection team to seize the critical period of spraying control. In this process, the fruit farmers themselves must have a general sense of consciousness and found that there are cypress trees planted around the orchard. They must promptly spray and control the disease to cut off the bacteria transmission chain, curb the occurrence of rust, and ensure their own profits. In addition, when building an apple orchard, a pear garden, or a date garden, we must consider the surrounding environment comprehensively and try to avoid building cypress trees.
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