He often goes to the countryside and often listens to fruit farmers saying that the rot disease has been very serious in recent years. It is hard to prevent, affects production, and even destroys the garden. He talks about this issue.
First, the characteristics of rot disease
The rot pathogen is a weak parasite that invades the wound and has the characteristic of latent assault beam. The tree vigor is weak and it begins to infest. Strong tree vigor, potential bacteria, can occur throughout the year. From February to May and August to November, there were more lesions and the most serious damage.
Second, the solution
1. Strengthen tree vigor, improve disease resistance of trees, strengthen underground management, and must pay attention to basal fertilization in autumn. Improve the tree's storage and nutrition, so as to enhance the cold resistance of the tree. Fertilization is dominated by organic fertilizer. If the source of fertilizer is insufficient, organic, inorganic and biological fertilizers are used. This can not only supply a large number of elements and trace elements needed for the tree, but also improve the structure of the soil granules so that the root system can be in a good condition. The growth and development of the environment, truly reflects the deep rooted leaves, fully enhance the growth potential of the tree, control the occurrence of rot disease.
2. During winter pruning, pay attention to the protection of the wound. To go to the three branches of the wound, one must flatten and polish, and the other must be protected with a healing agent. After the experiment, the effective healing agent is liquid wax. The formula is as follows: 300 grams of rosin, 100 grams of lard, 100 milliliters of alcohol, 5 grams of Zhizhibao.
3. Depress the number of rot germs in the orchard. In winter, fungicide can be applied to the trunk branches and branch junctions. Jinlix 400 times + 500 times.
4. The growing season should be checked frequently, at least one month in the orchard to check the time, found rot lesions, timely scraping and smear protection of wounds, scraping the lesions should pay attention to: a from 1-2 cm outside the lesion scraped; B deep to the xylem; c lesions on the left and right vertical to the xylem, the angle between the lower and xylem greater than 100 degrees. Pharmacy selection of 200 times Jin Lishi + 400 times soft water, painted again at intervals of 10 days.
5. Strengthen tree management, apply integrated management techniques, make the orchard airy and transparent, protect the leaves, and reasonably load, improve the disease resistance of the tree.
In short, by strengthening underground and above-ground management to increase tree vigor and improve the resistance of the tree body, the agent spreads the stem. Regular inspections scrape the lesions, and the medicaments treat wounds to reduce the number of pathogens. Pay attention to the protection and the appearance of frozen wounds to prevent the invasion of germs. A comprehensive set of measures can control the occurrence of rot disease.
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