There are a wide variety of pressure vessel, which can be divided into gas storage vessels and liquid storage vessels according to the different sources of pressure. The design and manufacturing of pressure vessels need to meet a series of technical requirements to ensure the safe operation of the vessel. Pressure Vessel Customization,Pressure Vessel Supplier,Pressure Vessel Features Chongqing Xingjida Import and Export Trade Co., Ltd. , https://www.xjdvalve.com
Technical points of bacterial pesticide application
Bacterial bio-pesticide has the advantages of high insecticidal rate, no pollution to the environment, harmless to humans and animals, and no resistance to pests. It is a new type of protective agent for the promotion of pollution-free cultivation of vegetables. Since the weather conditions during use affect the bacterial activity in the bacterial pesticides, which affects the control effect, it is necessary to pay attention to the weather conditions at the time of use. A look at the temperature: According to the test, the efficacy of applying bacterial bio-pesticides at temperatures between 25 ° C and 30 ° C is 1 to 2 times higher than that at 10 ° C to 15 ° C. Second, look at humidity: Bacterial spores in bacterial bio-pesticides are in a humid environment. Therefore, the greater the humidity in the field, the higher the efficacy, especially the spraying of powdered biological pesticides should pay attention to the field humidity. Generally, the bacteria powder is sprayed when there is dew in the morning and evening, so as to facilitate the adhesion of the microbial agent to the stems and leaves of the crop, and promote the spore propagation and improve the efficacy. Third, look at the sun: According to the test, direct sunlight for 0.5 hours, the spore mortality rate is about 50%; direct radiation for 1 hour, the spore mortality rate is 80%. In addition, ultraviolet radiation can degrade the parasitic crystals. Therefore, spraying biological pesticides should be carried out in the evening or on cloudy days. Fourth, look at the rain: shortly after spraying the biological pesticides, in case of heavy rain, the bacteria sprayed on the stems and leaves of the crops will be washed away to reduce the efficacy; but if it rains 5 hours after the application, it will not only be light rain, but not only It will not reduce the control effect, but will have a synergistic effect. Five look at the wind: the wind and the days of bacterial pesticides waste, especially the powder, lost more. At the same time, windy days are not conducive to the germination of spores. Therefore, bacterial pesticides should be applied in the absence of wind or breeze.
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