Western Du Fu Nuo Problems and Prevention
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November 09 20:01:56, 2018
Western azaleas, also known as the Belgian azaleas, have a long flowering period, many flowers, and beautiful flowers. However, in the process of support, we often encounter such problems. According to the author's many years of support experience, we now introduce common problems and preventive measures. Question one: The plants die after flowering. The key to solve: moderate air humidity. Western azaleas require strict air humidity. The maintenance in the greenhouse should ensure that there is no water in the ground. Under normal conditions, the air humidity is completely suitable for the growth of azaleas. Question 2: Unbalanced growth on both sides of the plant. Solve the key: daily watering and fertilizing evenly. We are often accustomed to watering from one side, so that the culture soil is wet on one side of the dry side and less fat on one side. Over time, it will cause the capillary roots of the plants to shrink on one side of the developed side, resulting in plant atrophy. Both sides grow unevenly. Therefore, when we fertilize the Western rhododendron, we must start from the circumference of the flowerpot and operate it evenly. Question 3: Inconsistent flowering time of plants. Solve the key: start at the right time. Since most of the western rhododendrons introduced by us are rhododendrons in the four seasons, they bloom many times a year under natural conditions and their flowering periods are not concentrated. From the operator's point of view, flowers can be made more profitable when they are open on holidays. Therefore, if you want to make it a flowering season during the Spring Festival, you should start a concentrated start in July and August. Beginning must be thorough, remove the length to ensure that the overall plant type is neat. In the support process, this step is extremely critical and cannot be ignored. Question 4: Plants have "lobular disease." Solve the key: control locusts. Western rhododendrons are more resistant to flowers, but improper maintenance also causes pests and diseases. In addition to the common brown spot, iron deficiency, there is a symptom, it is generally the first to occur in the new shoots, leaves clustered, not stretched and yellowish leaves, people used to call it Du Fu "lobular disease." Most flower farmers think that this is a physiological disease caused by zinc deficiency, and they have tried their best to supplement zinc but have not achieved good results. In fact, this is caused by locusts. We should adopt the principle of “prevention first, comprehensive prevention and control†to eliminate the diseased plants when they enter the greenhouse, spray 1 to 3 Baume degrees of lime sulfur or 40% omethoate 5 to 10 Doubly dry to prevent. Once onset, spraying with 20% dicofol EC 500 to 600 times gives an ideal result.