The desert rose soft rot is a major disease that damages the desert rose. The desert rose is full of flowers, flowers and plants. The roots and stems are ancient and vigorous, and they are excellent succulents in the tropics. It has been introduced into China for more than 10 years and has grown well. However, the occurrence and damage of soft rot disease often results in the death of the whole plant. 1. Symptoms: Soft rot is a major disease of the desert rose. The desert rose has watery softening near the surface of the ground. It is initially white or light yellow, and finally it turns dark brown. It breaks up and rots in wet conditions and has Odor, internal organization black, sticky and soft when touched. 2. Cause: Desert rose soft rot is mainly caused by high temperature and hot summer, poor ventilation or water accumulation in the basin. 1 Summer heat is sweltering and poor ventilation or dripping rain is a key factor in the occurrence of the disease. 2 Over watering during growth, tubers and roots are in a state of suffocation, and root absorption capacity declines. 3 When the upper pots or seedlings are transplanted too deeply when they are transplanted or roots are too much soil, it is beneficial to the onset. Humidity of the stem base is conducive to the propagation and intrusion of pathogens, and promote the occurrence of diseases. 3, control methods: 1 Select a sandy loam with good drainage and medium fertility during cultivation. Use 3 parts of coarse sand, 1 part of rot leaf and a small amount of grass ash, and do not use garden soil for nursery soil. 2 In order to prevent the occurrence of soft rot in advance, it should be started from the planting seedlings. The first step is to disinfect potted soil for planting flowers and the soil must be used. 0.5% to 1% formalin solution was used to disinfect each other. The depth of the seedlings is usually slightly exposed on the neck of the seedlings, and about 1/3 of the seedling stems and necks are exposed, and the old tubers are exposed above the 1/2. 3 watering: usually watering can not be too much, so as to avoid basin soil too wet, especially in the early basin to pay attention to less watering, when the weather is hot and micro tide is better, from the beginning of September can be appropriate to pour more water. 4 drug control: Every 1 month or so, should be sprayed agricultural streptomycin 1000 times or 150 to 200 times Bordeaux mixture. Disposable medical Face Mask not only can prevent inhalation of dust, etc.: The activated carbon cloth in disposable masks can prevent poisonous gas, odor, and dust from entering the body through the respiratory tract, it also can Anti the 98% bacterial in your daily life. Surgical Earloop Disposable Face Masks Medical,Surgical Face Mask,Meltblown Filter Face Mask,Conoravirus Prevention Disposable Face Mask RFX+CARE Manufacturing Co.,Ltd. , https://www.rk-rfxcare.com
Key Techniques for Prevention and Control of Desert Rose Soft Rot