Method for controlling banana wilt

Abstract

The invention relates to a method for controlling banana wilt. The method comprises the steps of: spraying stems and roots with nutrient solution containing 0.05-0.3mg / L of naphthylacetic acid, 0.2-0.3% of borax solution and 2-6% of MgSO4 for 600-800ml / plant, and after yellow leaves become green, spraying the nutrient solution for 300-500ml / plant and 2-3 times at every 8-12 days; after the disease is improved, spraying the stems and the roots with nutrient solution containing 0.2-0.3% of borax solution and 2-6% of MgSO4 for 300-500ml / plant and 5-8 times at every 15-20 days. In order to control the disease after 2-3 years, magnesium fertilizers and boric fertilizers can also be applied for soil of each banana plant. The method has the advantages that the banana wilt can be effectively controlled according to the internal cause of the banana wilt, and the diseased leaves become green in a faster manner, so that the yield is increased and the disease can be continuously controlled for 2-3 years.

Description

technical field [0001] The invention relates to the technical field of banana disease prevention and control, in particular to a method for preventing and treating banana wilt. Background technique [0002] Banana Fusarium Wilt (Banana Fusarium Wilt), also known as Panama disease, yellow leaf disease, and banana fusarium wilt, was first discovered in Australia in 1874, and became popular in Central America in 1890. From 1935 to 1939, it destroyed banana orchards in South America. million hectares, the disease occurred in Xigong banana, Guangxi, my country in 1960. Since then, Hainan, Taiwan, Guangdong, Yunnan and other provinces and autonomous regions have had a large area of ​​disease, the incidence rate is 3.2%-26%, and the serious one is as high as 60%, often causing devastating losses , farmers call it a "cancer" of bananas. [0003] Historically, people generally believed that the disease was an infectious disease, and the pathogenic bacteria was Fusarium oxysporum. At p...

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Problems solved by technology

[0004] At present, although there are a large number of people conducting research on the disease, no specific medicine has been developed to treat the disease. Therefore, the only methods for prevention and treatment can be ① apply lime to adjust soil acidity (PH value to 7) to kill nematodes and reduce bacterial infection; ②Prevent seedlings from carrying bacteria, choose disease-resistant varieties or non-carrying tissue culture seedlings; ③When diseased plants are found, block the diseased area, dig up and destroy them, and inject glyphosate to kill them, burn them, or use lime or lime nitrogen for disinfection; ④Strengthen cultivation management or implement crop rotation. According to reports from Taiwan, the annual incidence of disease can be reduced from 30-50% to 8.1-17.6% in rotation with rice.

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