Control methods: 1. The withdrawal time depends on the weather. Normally, when the temperature is lower than 10°C at night, it is not suitable to withdraw the shed. At this time, the amount of ventilation should be increased to prolong the release time. In the sunny morning, when the temperature of the shed reaches around 28°C, it begins to wind. After entering the result period, the night temperature in the shed should be controlled at about 13°C. Under the condition of high temperature and strong light, the wind should be released around, so that the film can only cover the glare and avoid the effects of burning the plants. In places with good conditions, it can be shaded with shade nets from 10 am to 4 pm in sunny days. 2. Remove the weeds and other crop residues around the production site in time to reduce the source of the disease. 3. Cut off the virus transmission route. Every 7 to 10 days, spray once-on-a-time net, diazepam, anti-indolyl, dimethoate, and diflubenzuron to kill aphids and prevent virus transmission. 4. Chemical control. At the beginning of the disease, the disease was sprayed once with a solution of phytopathogenic spirit, virus A, virus quick killing, and antivirus scorpion, for a total of 2 to 3 injections. In combination with spraying, auxin, potassium dihydrogen phosphate and other solutions should also be sprayed to enhance plant disease resistance.
Our benzene compounds and Heterocyclic Compounds are developing at the same time, currently we have more than 800 kinds of benzene compounds. Species is on constantly improving . We also developed a distinctive feature of our company 's products , such as 2 -nitro-3 -nitro-5 -bromoacetophenone 56759-31-0, 2- chloroacetophenone , 3-Bromo-2-iodotoluene CAS 869500-07-2, α- bromo-3- fluoro-4- chloroacetophenone , 231297-62-4 . we are willing to accept customized products and services outside of our catalog . We are ready to overcome the complex chemical synthesis, we have the confidence and ability to accept difficult challenges . Our high -quality , cost-effective services have been widely recognized by our customers. We are always put the customer's needs and interests on first , and strive to establish a sustainable and stable relationships with customers.
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Tomatoes in early spring are antivirus
In the early spring, the tomato virus virus has been seriously affected. The main reasons are: First, the spring climate is arid and the locusts multiply, spreading the virus on some overwintering plants to the tomatoes. The second is that high-temperature light and drought make it difficult to adapt plants that have just been transferred from protected land to field.