Star anise gold plate, sprinkled peach leaf coral, rhododendron scorched leaf disease
Star anise and Sajin peach leaf corals are negative plants and are not tolerant to strong sunlight. Midsummer poison causes severe burns of their young leaves, causing curling and withering of young leaves or scorching leaves, seriously affecting plant growth, and some pathogens take advantage of the deficiency to further cause infectious diseases. the fruiting body of the disease can be seen in some disease spots. Rhododendron is a semi-negative plant, the cause of scorched leaf disease is similar to the above, the occurrence of tender leaves is more serious, the disease caused a large number of abnormal defoliation.
Prevention and control methods:
Because of the sudden and strong wind and rain in midsummer, ⑴ must remove the existing diseased leaves and fallen leaves in time and destroy them on the spot, so as to prevent the existing bacteria from taking advantage of wind and rain to expand the scope of infection.
⑵ strengthens the management, enhances the growth potential of trees and improves the disease resistance of plants.
⑶ spray inhibited the development and spread of the disease. Chlorothalonil and Meike were sprayed every 10 days, 3000-4000 times.
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How does the northern cuckoo spend summer?
Azaleas like cool, moist, well-ventilated environments. Due to the influence of temperature, light, humidity and other conditions in the northern region, rhododendron has to undergo some tests in the summer of the north. If it is not good, it will accumulate many diseases and die of leaf falling light. How can it survive the hot summer smoothly? Generally, we should grasp the following points: Ventilation Northern rhododendrons winter in the greenhouse, with the arrival of spring, the temperature is also rising, in early April, indoor temperature can reach 28℃ at noon, at this time should pass
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Rhododendron henryi
The family belongs to Ericaceae. The morphological characteristics of Ericaceae are evergreen shrubs. Height l-4m. Leaf blade obovate to oblanceolate, abaxially scalulose. 3 flowers terminal, corolla white with pink, ca. 4.5 cm long. Flowering April-May. Like warm and humid, like light, slightly barren. Endemic plants of Xizang. It is produced in the Yarlung Zangbo River Canyon and only grows on the hillside forest edge shrubs with an altitude of about 2000m.
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