Causes of rhododendron death and its countermeasures

Potted cuckoos often wilt and die, which is a great pity to flower growers. The reasons and countermeasures are analyzed as follows for reference:

First, the light time is not enough for azaleas to be big and beautiful, and the flowering period is long, which requires sufficient sunlight. If you watch it indoors, photosynthesis is limited, and the organic nutrients in the flower plant are quickly consumed and killed, so the indoor display time should not be long. It should always be placed in a place with plenty of sunshine outside.

Second, poor ventilation azaleas like ventilated, cool growth environment. General family flowers, mostly on the balcony, due to poor ventilation, solar radiation can not be lost in time convection, the formation of high-temperature dry and hot environment, this small environment is very easy to cause the reproduction of red spiders and other pests. To this end, cuckoos should be placed in a shady, humid and well-ventilated environment, and often sprinkle water on the leaves and the ground to enhance air humidity.

Third, the temperature is uncomfortable when the cuckoo blossoms are just in the bud, and it also coincides with the time when the flowers come out of the room, while the northern spring has a dry climate outdoors, the cuckoo's habits can not adapt, even if the buds have grown up, they are often burned by the sun because of poor shade, coupled with the hot and dry wind blowing in spring, which is fatal for the cuckoo who likes to be moist. In view of this situation, it should be put indoors during the winter and the temperature should be maintained at 5: 10 ℃. After leaving the room in late April, the Reed curtain should be used to shade at 8: 9 in the morning and open at 5: 6 in the afternoon. At the same time, water should be often sprinkled on the leaf surface and the ground to control the attack of dry and hot wind.

Fourth, the cuckoo does not like fertilizer because of improper fertilization. because some people love flowers and take into account the consumption of a lot of nutrients during the flowering period, they apply a lot of fertilizer, resulting in an increase in soil fertilizer, causing cell fluid infiltration, and withering the plant. Some people put bean cakes, fish sausages and other fertilizers into the basin, but when these things rot in the soil, a large number of microbes will be active, causing the soil to lack oxygen and suffocate the roots. In view of these situations, fertilization should be small and repeated, such as bean cake, fish sausage, etc., must be applied after full ripening, and a small amount of ferrous sulfate can be added to prevent leaf yellowing.

Improper watering many flower growers think that watering the flowers every day will make the flowers flourish, but they do not realize that too much watering will cause buds to fall, roots to rot and die. There are also people watering in the morning and evening on hot noon or cold days, because the temperature difference is too large, seriously affecting the growth of cuckoos. In view of these situations, it is recommended that watering should be "dry and wet", generally watering once every 2 to 3 days. It is better to water in the morning in summer and at noon on a sunny day in winter.

6. some flower growers do not change pots for cuckoos for a long time, the plants grow, the roots can not stretch, and the soil nutrients are exhausted. Some people often pour the leftover tea into the flowerpot, thinking that it can increase nourishment, but they do not realize that the tea is alkaline, while the cuckoo likes acidity, so it is not suitable for its growth. Therefore, the basin should be changed once every three years or so, and the sandy loam with pH 5.5 / 6 with good drainage should be replaced. After a year and a half, it is better to spray vinegar into a thin solution.

Seventh, the cuckoo is often harmed by shell insects and red spiders without timely pest control, so it should be killed by spraying 1500 times fluoroacetamide in time. When the number of insect pests is small, it can also be removed with a brush.