I. According to the characteristics of pests' migratory movements, in the actual utilization of biological pesticides, the use of biological pesticides combined with high-efficiency, low-toxicity, low-residue chemical pesticides should be adopted according to the characteristics of pests' migration. Because low-dose chemical pesticides are added to biological pesticides. It can reduce the resistance of pests to create conditions for the invasion of pathogenic microorganisms. At the same time, pests are invaded by pathogenic microorganisms and then reduce the resistance to chemical pesticides. Thus the two complement each other and thus play a synergistic role.
Second, look at the use of biological pesticides due to the effect of environmental factors. Therefore, in practical applications, it takes a certain period of time for the biological pesticides to be sprayed from the plants to the insects to feed on or contact with the bacteria, and the process of feeding from pests to death also requires a process that is susceptible to external influences during this period. The most influential factors are temperature, humidity, light and wind. The temperature not only acts on the bio-insecticide spores but also on the pests themselves and thus affects the pathogenicity and toxicity of the pathogenic microorganisms; the humidity has a direct relationship to the propagation and spread of the bio-insecticide spores. Humidity is high for microbial spore reproduction and spread. And kill pests; ultraviolet rays in the sun have a lethal killing effect on spores. Therefore, they should be used as far as possible to avoid strong light. Use effect is better after 4:00 pm Wind has a crucial role in the drift and diffusion of powder biological pesticides. The application of powder in the breeze works best.
Third, look at the use of biological pesticides in different regions are not the same. China's geographically diverse regions are relatively diversified and the south is wet and rainy. The northern and western regions are arid and less rainy. Biopesticides only play their best when they meet the best conditions for their life. On the one hand, increasing the amount of water used for spraying in arid regions results in the survival and propagation of a highly humid environment that is prone to microbial spores; on the other hand, certain specific macromolecular substances and substances that increase the viscosity of the solution, such as starch, can be added to the preparations. The animal bone glue, the ash leaching liquid and the like can reduce the evaporation of the deposition liquid sprayed from the carrier to avoid the occurrence of rapid drying, thereby improving the use effect of the biological pesticide.
Fourth, see insect pests are the targets of biological pesticides for different types and characteristics of the use of pest pesticides are also different. There are several different development stages of pests at different stages of their development. The resistance to biopesticides is different at each stage of development. Therefore, it is necessary to understand the development stage of pests at the development stage. For example: Cabbage caterpillar can be divided into eggs, larvae, cockroaches, and moths in four different stages of development. Egg stage has eggshell protection. Carcass stage protection. Older larvae and thicker waxy layer protect insects and wings. . Therefore, only the application of young larvae at the time of application can give full play to the effectiveness of biological pesticides so as to achieve the "treatment of minor governance and early treatment" requirements. In addition, different types of bio-insecticides such as bt on lepidopteran pests are sprayed and applied on the surface of the plant to allow pests to feed or die on the basis of insect pest feeding characteristics. Invalid and avermectin has a very good effect on aphids.
V. Seeing mechanical bio-pesticides Most of the spraying systems in practical applications have low efficiency. Usually, the top-down direct application to crops causes large amounts of pesticides to accumulate on the topmost leaves of plants. Other pesticides are lost in the soil, especially fog. The loss is greater when the drop is larger. At the same time, the use of biopesticides should be optimized because of the high production costs of biopesticides. The use of high-performance spraying machinery is imperative if the droplets ejected from the hydraulic nozzles matched with the fan-shaped air nozzles by mist spraying are small and even, so that the potential latent particles of the spray are reduced and the smaller droplets are sprayed to the desired target leaf. Improve the effectiveness of biological pesticides to reduce production costs.
Six, look at the control effect of pesticide biological pesticides is often closely related to the dosage form and the use of technology. Therefore, the use of biological pesticides must be based on the right object, weather conditions and the use of the right dosage form to achieve the maximum control effect. For example, powders can be dispersed with a large range of air buoyancy and wind force to have greater contact with insect pests. For insects with large amount of leaves, such as cabbage caterpillar, it is better to use a method in which a wettable powder is added with water to form a suspension. The dusting effect is worse. Capsules not only have a long control effect but also protect pathogens from environmental factors and can be used for spreading in greenhouses.
VII. Look at the varieties Many people in the actual use of biological pesticides are not fully aware of the nature of biological pesticides. They mistakenly believe that biological pesticides can eliminate all pests and thus purchase them indiscriminately. Some effects increase the cost of production, increase the difficulty of prevention, and delay the prevention and treatment. In fact, the specificity of biopesticides is very strong. The insecticidal spectrum is not as broad as that of Bacillus thuringiensis (bt) is effective against Lepidoptera larvae and that of Homoptera with leafhoppers is not fatal, and different strains of Bacillus thuringiensis against several species. There are also differences in the control of important pests. Therefore, suitable biological pesticide species should be targeted for different target pests.
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.
we will give you:
1. Best quality in your requirement
2. Competitive price in China market
3. Mature Technical support
4. Professional logistic support
All we want is win-win business. Send yr. inquiries, you will get it!
2,3,4-Trifluoronitrobenzene,High Quality Fluoro,Benzene Series
Taizhou Volsen Chemical Co., Ltd. , https://www.volsenchem.com