Since May of last year, most parts of our district have been exposed to high temperatures and drought. The banana leaf spot syndrome (leaf spot, yellow swollen disease, and yellow leaf disease) has been seriously affected and has spread everywhere. Many banana farmers have no effect on continuous application of pesticides. The yield and quality of bananas are lower than in previous years. How to deal with this kind of disease? The author made a detailed investigation into the suburbs of Nanning suburbs, Nanning, Qinzhou, and Baise, and found that in addition to the factors of high temperature and drought caused by banana leaf spot syndrome, there are There are several aspects that should not be overlooked: 1. Single application of pesticides, continuous use of pesticides of the same composition; 2. Insufficiency of pests and maggots; 3. Slight acidification of the soil, severe compaction (tested by the Plant Protection Institute of the Academy of Agricultural Sciences. The soil pH of the garden is lower than 5.2); 4 partial nitrogen fertilizer. Based on the above factors, the author carried out a comprehensive prevention and control demonstration in the Tanluo Town in the outskirts of Nanning City, Qiaojian Town in Long'an County, and Shuangqiao Town in Wuming County. The results are all very clear. Fruit is beautiful and shiny. The specific measures are described below. First, clean up the banana garden. Severe illness, especially the diseased leaves that have already fallen, were cleared out of the plantation and burned. 2. Loosen and improve the soil, enhance the vitality of the root system, and increase the disease resistance of plants. With a variety of organic matter and trace elements in the soil mixed with soil improvement solution Lebao against rooting, every 5 days, 2 times in a row (this method can make banana stem thickening more than 2 cm). Third, the chemical control of pests and diseases, with Klebsiella, neomycinein mixed insecticidal acaricide foliar spray once a week, even spray three times. Fourth, foliar spray nutrition solution. According to the order of Kam → Nonglebao → self-contained compound fertilizer (mainly nitrogen, phosphorus, potassium, magnesium, and calcium), each spraying interval is 5 days, every 15 days is a course of treatment, continuous 2 courses.
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