Special interview with this reporter: expert of the expert group of this newspaper, professor of Yangling Vocational and Technical College, expert of miscellaneous fruit Ma Zhifeng
In the apple, pear, and jujube production areas, rust is common, but in actual production, most of the fruit farmers only know the disease and spray, and do not understand the specific characteristics of the disease, which seriously damages the quality of the fruit and affects the benefits. In this regard, Ma Lingfeng, a professor at Yangling Vocational and Technical College, said that rust is a fungal disease that requires two host plants to turn host parasitic. Cypress, cypress, and cypress are the intermediate hosts of rust teliospores. After the disease damages pear trees, apple trees and jujube trees, it will be transferred to the cypress trees for wintering. When it is warm in spring, the winter rust spores will spread to these fruit trees and then breed, which will damage the new shoots, leaves and handles of the tree. Young fruit. When conditions permit, spores of rust can be sprinkled for 10 kilometers with the wind. Therefore, it is crucial to cut off the source of the infected host to prevent the disease.
However, in actual production, because the farmers in the fruit area have insufficient understanding of the characteristics of rust occurrence, and the municipal construction department lacks the guidance of professional plant protection personnel in the urban and rural construction and road greening process, it is not suitable for the local cultivation of the tree species, which is the pathogen. Spreading provides a barrier, causing the disease to occur frequently in some fruit areas, becoming a major lesion affecting the income of local fruit farmers.
In response to this situation, Ma Zhifeng reminded the majority of fruit farmers and fruit districts, municipal construction, urban construction and other departments, in the apple, pear, jujube production areas to prohibit the planting of cypress, juniper, cypress and other cypress trees. In particular, municipal, urban construction and other related departments should not only consider the aesthetics when selecting green seedlings. It is necessary to comprehensively consider the actual situation in the local area, and scientifically plan the planting areas of cypress and apple trees, pear trees, etc., and try to cut or reduce the transfer host. Infect the fungus source. In this process, the fruit industry bureau, forestry bureau, horticultural station and landscaping management departments in the fruit area should work together to set the fruit eugenic area as a pollution-free protection area and excavate the sporadic cypress trees planted in the area. Adjust the structure of landscaping tree species and replace cypress trees with high rust resistant tree species.
For the fruit areas that have been planted with cypress trees and are temporarily unable to be excavated, Ma Zhifeng suggested that all counties, towns (townships) and villages should increase the intensity of the unified defense, set up more reporting points, and provide relevant information to farmers in a timely manner. Fruit industry planting villages as a unit, set up a plant protection team to seize the key period of spraying control. In this process, the fruit farmers themselves must have a sense of the overall situation, and find that there are cypress trees planted around the orchard, it is necessary to spray them in time to cut off the germplasm transmission chain, curb the occurrence of rust and ensure their own benefits. In addition, when building apple orchards, pear orchards and jujube gardens, we must consider the surrounding environment and try to avoid the construction of cypress trees.
Disclaimer: Some articles on this website are transferred from the Internet. If legal rights of third parties are involved, please inform this website. phone
Ventilation is one of the most important components in a successful greenhouse.
If there is no proper ventilation, greenhouses and their growing plants can become prone to problems. The main purposes of ventilation are to regulate the temperature and humidity to the optimal level, and to ensure movement of air and thus prevent build-up of plant pathogens (such as Botrytis cinerea) that prefer still air conditions. Ventilation also ensures a supply of fresh air for photosynthesis and plant respiration, and may enable important pollinators to access the greenhouse crop.
Greenhouse Circulation Fan,Greenhouse Ventilation Fan,Automated Greenhouse Ventilation Fan
JIANGSU SKYPLAN GREENHOUSE TECHNOLOGY CO.,LTD , https://www.spgreenhouse.com