Heavy rain will have an indirect effect on the growth of fruit trees. For example, fruit trees may have yellow leaves, rotten roots, poor flower bud differentiation, and rapid infection of pathogens, which should be taken seriously. The following is a management recommendation for possible problems.
Fruit tree yellow leaf rainwater can provide enough water for fruit tree growth, but it also tends to cause excessive supply of major nutrients and insufficient supply of some directly related elements in the minimum nutrient law, resulting in different degrees of yellowing of the leaves. Therefore, after the rain, it is necessary to pay attention to the combination of underground topdressing and foliar spray fertilizer, paying special attention to the application of iron and boron, magnesium, zinc and other trace elements. At the same time, it can be applied to the excessively prosperous tree to promote the flower king 2, and control is prosperous.
The roots of the fruit trees are low-lying, causing short-term water accumulation. The roots of the fruit trees are anaerobic, causing some roots to root, affecting the supply of nutrients, causing the leaves to quickly wilting in a short period of time, causing diseases such as rotten roots. It can be used to apply 100 kg of quick-lime lime, combined with fertilizer and tree-protecting general 500 times liquid sterilization, and the ground is properly trimmed in summer to promote ventilation and light transmission.
Poor flower bud differentiation In the late growth stage of fruit trees, most of the fruit trees will grow, affecting the transformation of vegetative growth to reproductive growth, which will cause the nutrition of flower bud differentiation and the nutrient competition of fruit trees, leading to poor flower bud differentiation and affecting the annual yield. To trim through the summer, remove too many branches or branches to adjust the tree potential and coordinate the supply of nutrients. At the same time, combined with spraying foliar fertilizer such as 3 ‰ potassium dihydrogen phosphate and growth inhibitors to promote flower bud differentiation.
The high-humidity environment infecting rainy days provides conditions for the germination of germs. Rainwater is also the main route of transmission of pathogens. If management measures cannot keep up, it is very likely to cause the occurrence of fruit trees in the park. Therefore, after the rain, we should focus on the prevention and control of rot, dry rot, round rotten fruit disease, early defoliation, and choose 500% mancozeb wettable powder 500-800 times or dexameranium water 500 times. The liquid, 50% carbendazim 800 times solution combined with the new high-fat film 800 times liquid sprayed in the sunny day after the rain, the spray and the addition of the penetrant effect will be better.
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