Integrated control of diseases and insect pests of Lycium barbarum
As a traditional Chinese medicine, Chinese wolfberry not only has high medicinal value, but also its fruit, leaf, stem and root can be eaten or drunk. With the improvement of people's living standards, more and more varieties of Chinese wolfberry wine and cakes have been developed in recent years.
The common diseases and insect pests of Chinese wolfberry are aphids, Chinese wolfberry mud worms, whitefly, cotton bollworm, gall mites and powdery mildew, anthrax, leaf spot, virus and so on. The technical measures of comprehensive control are introduced as follows.
Prevention and control principle: prevention is the first, prevention and treatment are combined. The strategy is mainly based on healthy cultivation and biological control, physical control, agricultural control, supplemented by chemical control. Adhere to one drug to prevent and control a variety of diseases and insect pests. Under the premise of effective control of diseases and insect pests, minimize the use of pesticides.
Prevention and control measures: ① chooses good site conditions. The planting field should be flat, convenient for drainage and irrigation, and fertile soil. Resistant varieties were selected for ②. ③ reasonable close planting. At the beginning of planting and building the garden, 1000 plants can be planted per mu for high yield, and the plant spacing can be expanded gradually with the growth of the plant. But the line spacing should be fixed, generally 1.5 meters. ④ fertilized rationally. Apply more organic fertilizer, biological fertilizer and appropriate amount of long-term slow-release fertilizer. According to the size of the tree, 5 cubic meters of rotten chicken manure, 5 kilograms of biological fertilizer and an appropriate amount of slow-release compound fertilizer should be applied per mu every year. ⑤ reduced the incidence of diseases and insect pests. During the growing period, there are no weeds in the field and around; after overwintering, the fallen leaves and fruits in the field are cleared and buried or burned; tomatoes, melons and other plants prone to symbiotic diseases and insect pests are not planted in the vicinity. Spraying 2 Mel insecticide 3 times after overwintering and before and after budding. You can choose 30% crystal stone sulfur mixture 150x solution, 70% methyl topiramate 500x solution, 1.8% avermectin 2000 fold solution. When spraying, the concentration should be sufficient, and the spray should be uniform and thoughtful. The prevention and control of virus disease is mainly to prevent and control aphids and mites early, combined with spraying phytopathrin, phobia, etc., and can be removed when there are few diseased plants. Flood irrigation is prohibited during the onset of the disease, and stagnant water is removed in time after rain, and spray within 24 hours. ⑥ timely spraying potassium dihydrogen phosphate and so on.
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Diseases and insect pests of Lycium barbarum and their control
1. Black fruit disease of Chinese wolfberry, also known as anthracnose. Damage to fruits and leaves. ① fruit disease, first in the green fruit to produce a round irregular brown micro-sunken disease spot, there are small black spots, arranged into a wheel, and some appear orange-red sticky matter on the disease spot. In the later stage, the diseased fruit turned black, stiff and dead early. ② leaves were characterized by small yellow spots at the initial stage, and then expanded into irregular spots with reddish brown edges. In the later stage, there were small black spots on the lesions, and some ruptured and perforated. From July to August, the disease was serious when it was hot and humid. Prevention and treatment: when ① is pruned in winter
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Occurrence and control of diseases and insect pests of Lycium barbarum
Chinese wolfberry is a deciduous shrub of Solanaceae. Its fruit is called Chinese wolfberry, and its root bark is called ground bone bark, which can be used as medicine. Tender stems and leaves make vegetables. The same genus plant Ningxia Lycium barbarum is mostly cultivated, and its fruit is called western Chinese wolfberry or sweet Chinese wolfberry for medicinal purposes, mainly produced in Ningxia, Gansu and Inner Mongolia. Chinese wolfberry has the occurrence of diseases and insect pests in all periods of growth, which causes great economic losses to production. In this paper, the occurrence and control methods of Lycium barbarum diseases and insect pests are introduced as follows: 1 Disease 1.1 Black fruit disease (anthracnose)
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