The autumn rain stretches the string of apple tree leaf
In normal years, leaf preservation medicines will be stopped around August 20, generally causing no large area of ​​fallen leaves. However, in the early part of this year, dry and rainy days, the rainfall in most of the fruit areas in late August increased, and there have been responses from individual fruit growers. The lack of attention to fighting drugs has caused a large area of ​​fallen apple orchards.
Many rains in late August, this year must guard against fruit tree brown spot, anthracnose leaf blight, etc., Paul must adhere to the middle and late September. However, some early mature orchards still have anthrax leaf blight. Here, to remind farmers, this period is the fruit of a rapid expansion period, this leaf can not be loose, especially after the discovery of anthrax leaf blight, it is difficult to re-treatment.
Early deciduous trees tend to reduce the nutrient reserve, the ability of the tree to reduce frost resistance, affect the growth of leaves and fruit next year, but also easily lead to rot disease, and there is no blade synthesis, the base fertilizer in autumn will not become a tree The organic nutrients that can be stocked cannot withstand the forces of the trees, and the new shoots will be delayed for the second year, which will cause a series of drawbacks.
Generally, the daytime temperature exceeds 25°C. As long as rainfall, brown spot disease will infect, and the leaves will fall after 12 days of incubation. However, for anthrax leaf blight, the leaves will fall 2 to 3 days after the rain. Therefore, the prevention and control of anthrax leaf blight should be based on prevention, pay attention to listening to the weather forecast, spraying Bordeaux mixture or crown fungus or noble copper timely before rainfall, and adding penetrating agent to increase exhibition force and resist rainwater erosion. . After a rainy day after the rain, immediately sprayed with 2000 times the Hui Run + praise 2000 times + Jinfu cattle 1,000 times for the killing treatment. Fuji orchard brown leaf protection program: Wanxiu 2000 times + Luo'an 4 800 times + silk Run 8000 times or Wanxiu 2000 times + Luo'an 5th 800 times + silk Run 8000 times the whole garden meticulous spray, it is best to add The upper leaf fertilizer.
Agricultural words: Long drought and long rain. This year, the days of the drought are dry and dry. Then, it is expected that there will be rain in September and October. Therefore, to remind the majority of farmers: timely spraying after the rain, do not let the leaves fall early, protect leaves such as life.
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