Biological pesticides generally refer to the use of biological living organisms to control pests and diseases. After application of biological pesticides, they do not contain residual liquids, do not have public hazards, and do not pollute the environment. They have unique and specific killings for related diseases and pests. Inactivated. At present, the world's most widely recognized antibiotics, insect hormones and venoms such as entomopathogenic nematodes.
For the control of flower leaf pests, Bt emulsions belonging to Bacillus bacterial insecticides . It is mainly composed of semi-spore crystals. At present, Bt emulsions have become an increasingly widely used biocide. When the pest has Bt insecticidal toxin, the digestive tract will die and die. When the leaves with Bt emulsion are eaten by the leaf-feeding pests, the pests will cause sputum, food, slow reaction, diarrhea, etc. The black ring will appear in the back of the pest and will slowly expand to the pests. The whole body will eventually kill the pest. Bt microbial agents also have a toxic effect on a variety of lepidopteran larvae and spider mites, such as the scorpion, yellow thorn moth, and heartworm.
A chlorfenapyr insecticide belonging to insect growth regulators, which controls the chitin synthesis of the epidermis of pests. Although the chlorpyrifos is a stomach poison, it can also enter the epidermis of insects and play a role. The effect of the medicinal agent is better, and the effect period is long. Not only that, but the economic benefits of prevention and control, rain or shower will not It reduces the volatilization of the drug, and the pest is not easily resistant to it. It is also safe for flowers, plants, animals and the environment.
In some cases, we can also choose plant pesticides , mainly including the following four species. Now give two main examples. 1% smoke·Bai·oil: multi-standard Chinese herbal plant emulsifiable insecticide, this kind of plant pesticide can also kill quickly against insects that are extremely resistant to disease and toxicity. Plant pesticides have good degradation, no residue, and use. It has the advantages of safety, no pollution, no pollution to the environment, and it also has the effect of stimulating growth of flowers. 0.6% matrine·lactone aqueous solution: There will be a contact-killing effect, supplemented by stomach poisoning, which promotes the growth of flowers. Such plant-based pesticides can be used to treat various kinds of aphids and food leaves in flowers. Pests.
When there is liquid in the Pipette tip, do not place the pipette horizontally or upside down, so as to prevent the liquid from flowing back and corroding the piston spring.In the process of biological experiments, especially in the field of Cell Culture, the pipette is an indispensable laboratory instrument, and the pipette holder is also used very frequently on the laboratory ultra-clean bench or in the biological safety cabinet. The ease of use of the pipette and the pipette holder also affects the ease of experimental operation.
pipette drying rack,pipette stand for lab,pipette stand for sale,pipette holder for use,rack for pipette
Yong Yue Medical Technology(Kunshan) Co.,Ltd , https://www.yonyue.com