Microbial pesticides refer to the use of living organisms such as bacteria, fungi, and viruses to prevent, destroy, or control the production of one or more pests that harm agricultural forests. It has the advantages of safety to humans and animals, no pesticide residues, no drug resistance, no environmental pollution, etc. It is being widely used in the production of pollution-free agricultural products. However, in the production survey, it was found that many people do not store and use their own properties, resulting in poor application results: Based on years of experience, the following points of use can be mastered to increase control efficiency without causing phytotoxicity. (i) Scientific custody of biological pesticides is a live preparation and must be kept in closed, low temperature, ventilated and dry places. Do not mix with germicides, antivirals, and alkaline substances. Otherwise, it will easily lead to the death of living organisms and reduce their efficacy. (b) Look at the daily temperature, humidity, light and other meteorological conditions affect the activity of biological pesticides, the temperature is 10-27 °C, with the increase in temperature, pest feed intake and absorption. Bacterial spores or viruses enter the pests and rest quickly, resulting in rapid growth and toxicity, which prompts the pests to die more quickly. The temperature is higher than 30°C and lower than 10°C. Under dry and strong light conditions, the application effect is poor. Therefore, the use of biological pesticides in cloudy days from May to September or cloudy days and sunny afternoons can significantly improve the effectiveness. (C) symptomatic selection of a wide range of pesticide pests and weeds, biological pesticides are relatively narrow range of applications, with strict selectivity. For example, kasugamycin only controls rice blast, and Lubao 1 only controls dodder. Therefore, according to the main pests and diseases occurring in the local area at the time, symptomatic treatment was selected to receive the desired results. (4) After the appropriate use of biological pesticides in advance, there is a process of reproductive detoxification, which is slightly slower than chemical pesticides. To strengthen pest and disease prediction, use 3-5 days ahead of chemical pesticides. In the period of egg hatching until the larvae were 2 years old, the fungicide was sprayed when the diseased leaf rate was 5% at the early stage of disease. (five) use the correct method of application 1. Concentration is appropriate, scientific interval. Low solution content, poor control efficiency, otherwise, it is easy to cause waste or phytotoxicity. Only timely application of suitable fungicides will enable pests and pathogens to obtain adequate amounts of pathogenic bacteria in order to ensure efficacy. For example, bacterial insecticides generally use 2200-2500 g of bacterial powder per km2 with a viable spore count of 10 billion g/g, large populations of insect populations, overlapping generations, inconsistent worm ages, large area-time doses, and short intervals. Bacillus thuringiensis controls Plutella xylostella, and the cabbage butterfly is separated by 10-15 days, and the control of S. bracteatum is separated by 5-6 days. 2. Spray evenly. Biological pesticides are mainly based on stomach poisons, even spraying can increase control efficiency. Before the powder is used, the amount of the drug is weighed, and a small amount of water is added to stir it into a paste. The emulsion is shaken well before use, and the amount of water required per kilometer is 750-1000 kg, and the mixture can be homogenized. Adding 0.1% synthetic detergent powder, saponin or tea powder to the solution as a sticky agent helps to improve the spraying effect. 3. The correct formula, mixed use. Bio-pesticides are highly targeted for insecticides and disease prevention. Pesticide compounding can broaden the scope of application and increase work efficiency, especially in the event of a gluttonous pest. However, it should not be mixed with alkaline pesticides and systemic organophosphate insecticides, and should not be mixed with fungicides and antivirals. When mixing recipes, do not use them for a long time. 4. Make up after the rain. The fish was used on the day of treatment and sprayed once after sunny days. 5. Safe medication. Bio-pesticides are highly toxic to silkworms; they are forbidden to use within 2 km of the silkworm area. China Agricultural Network Editor
Inoculate Vaccine,Inoculator Vaccine For Human,Prevent Rabies Vaccine,Vaccine For Human Treatment
Changchun Changsheng Life Sciences Ltd. , http://www.ccls-vaccine.com