Management of summer cherry blossoms
1. Grass mulching has high temperature in summer, evaporates quickly, and the amount of water is more than that in other seasons, but we should still adhere to the principle of "no dry, no watering". Cherry blossoms are shallow root plants, and the roots are close to the surface of the soil and are easy to dry. Straw can be used to cover the roots of the trees, which can not only maintain moisture and resist drought, but also prevent the capillary roots of cherry trees from being exposed, and greatly reduce the evaporation of soil water.
2. Dry entanglement and drought prevention can be wrapped with straw within 2 to 3 years after planting to prevent the trunk from drying. Because the cherry blossom bark is thin, wrapping the bark can protect against drought, sunburn and cold in winter. Two or three years later, when the seedlings grow new roots and gradually increase their resistance to the environment, there is no need to cover grass.
3. Watering should not be carried out at noon in the hot summer season, but should be carried out in the morning and evening. Loosen the soil the next day after each watering, which is beneficial to the breathing of the root.
4. In the case of high temperature and drought from June to August, cherry blossoms are vulnerable to red spiders, which can be sprayed with 2500 times bromoacarol emulsion or omethoate, triclofenac and other chemicals, which can achieve better results. It should be noted that mites are easy to produce drug resistance, and acaricides should be used alternately.
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Cherry blossom white stripe feather disease
The symptom of white stripe feather disease is becoming more and more serious in recent years, especially the cherry blossoms. The disease mainly occurs in the roots of trees, and the fibrous roots gradually spread to the lateral roots and main roots. The characteristic of the disease is that the diseased root is covered with a layer of gray silk mesh, and then the root decays, resulting in detachment of the cortex and serious loss of root absorption function. If the disease is mild, the cherry blossom grows poorly, the tree is weak, and the serious one causes death. Pathogen and regularity of disease the pathogen is Dematophoranecat
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Why do cherry blossoms fall early?
Cherry blossoms, which should have fallen in mid-September, have fallen in mid-August for four or five consecutive years. No pests and obvious diseases have been found, and there is no such phenomenon in the surrounding nurseries. What is the reason? Xu Shaoyuan, technical director of Zhejiang Senhe Seed Company, answers: Cherry blossoms fall early, there may be three reasons. The first is pests, longicorn larvae under the bark at the base of the trunk can cause early defoliation of the whole branch, if the larvae in the main root will cause early defoliation of the whole tree, so it is very important to check whether there are pests. Generally speaking, nitrogen content of 3‰ is relatively high.
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