Bacterial biopesticides are the new type of protective agents that are popularized and used in the current pollution-free cultivation of vegetables. Since the weather conditions during use will directly affect the activity of bacteria in the bacterial pesticide and thus affect the effect, special attention must be paid to the weather conditions during use. I. Temperature: The active ingredients of bacterial biopesticides are protein crystals and living spores. At low temperatures, spores reproduce slowly in insects and protein crystals do not work well. According to experiments, the efficacy of applying bacterial biopesticides at temperatures of 25-30°C is 1-2 times higher than at 10-15°C. Second, humidity: Bacterial biological pesticides in the spores hi humid environment, therefore, when used in the field the higher the humidity the higher the efficacy, especially spraying powdered biological pesticides should pay more attention to field humidity. Generally, the bacterial powder is sprayed when there is dew in the early morning and early evening, so as to facilitate the better adhesion of the bacterial agent to the stems and leaves of the crop, so as to promote the propagation of spores and improve the efficacy of the medicament. Third, the sun: ultraviolet rays in the sun have a killing effect on spores. According to tests, direct sunlight for 0.5 hours, the spores mortality rate of about 50%; direct 1 hour, the spores mortality rate of 80%. In addition, UV radiation will degrade parasporal crystals. Therefore, the spraying of bacterial biopesticides should preferably be performed in the evening or on cloudy days. 4. Rainwater: Shortly after the application of bacterial biopesticides, in the event of moderate to heavy rain, the bacterial broth sprayed on the stems and leaves of crops will be washed out to reduce the efficacy; however, if it rains after 5 hours of application, not only Does not reduce the effectiveness of control, but there are synergies. Wetness Indicator Adult Diaper Tena Diapers,Adult Nappies,Adult Underpads,Adult Pull Up Diaper Shandong Kangshun Daily Products Co., Ltd , https://www.centurybenifit.com