Recently, the third-generation mulberry-based pests in the mulberry park in Hai’an District have gradually hatched, posing a serious threat to autumn mulberry leaves. In production, we should seize the favorable opportunity for the current small mulberry tree crown and easy prevention and control to effectively prevent and control pests and diseases. According to a survey conducted on July 19, the county's mulberry trees were hatched successively, mainly including young larvae, with 60-1344 heads per mu, with an average of 270 headings. The average amount was mulberry; There are 0-1000 insects, with an average of 591 heads. The amount of occurrence is nearly one time higher than that of last year. The size insects are mostly at 2-5 years of age, and there are 0-180 worms per mu, with an average of 103 heads, and the occurrence is more than 1 times of last year. The occurrence of pests such as wild silkworms, caterpillars, and moths is light, and hatching is expected to begin in early August. There were no Spodoptera larvae in the park. If the high-temperature and dry weather occurs later, the number of microscopic pests such as mulberry horses and red spiders will increase rapidly. Due to the frequent incidence of mulberry diseases in spring, the pathogenic base number is higher, and with the recent increase in rainfall, black patches appear in local plots. In this regard, all mulberry fields throughout the county should conduct a chemical control before July 31st, and use Lexan 40% chlorpyrifos (1500 times), Sangling 73% acetylene emulsion (2500 times) and Green music 40% Dimethoate EC (1000 times liquid) spray, pay attention to spray to be comprehensive. In the case of mulberry field disease, the diseased leaves and leaves should be removed and destroyed in a timely manner. In addition, timely weeding, sparse buds, renovation trench system. There is no plot for applying Xiafei. At the end of July, 2500-3000 kilograms of manure were used per acre, and 50-60 kilograms of compound fertilizer for mulberry was used.
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