When using pesticides to control vegetable pests and diseases, it is necessary to use less drugs, have a good control effect, and have little or no toxicity to humans and animals and all kinds of beneficial organisms. They are required to be easily decomposed in the external environment and do not cause high pollution and low toxicity to the environment and agricultural products. Low residue pesticides. Specifically, it means that the dosage per acre must be determined from the actual situation. Through tests, the economical and effective use concentration and drug amount should be determined. It should not be too high or too low. Generally, the insecticidal effect is required to be more than 90%, and the disease prevention effect is more than 80%. Efficient pesticides; Use low-toxicity pesticides with a median lethal value (LD50) of more than 500 ml/kg body weight; The commodity vegetables harvested must pay attention to the safety interval of pesticides, and make the pesticide residues must be lower than the allowable standards set by the state.
I. Biological pesticides
Bio-sourced pesticides refer to pesticides that directly use biologically active organisms or biologically active substances produced during biological metabolism or that are extracted from organisms as pests to control diseases, insects, weeds and other harmful organisms. Specific can be divided into; plant-derived pesticides, animal-derived pesticides and microbial pesticides. Such as: BT, pyrethrin, nicotine allicin, sex pheromone, jinggangmycin, agricultural anti 120, Liuyangmycin, streptomycin, polyoxin, avermectin, brassinolide, addition Alizarin, alkaloids and so on.
Second, mineral source pesticides (inorganic pesticides)
The general term for inorganic compounds that are derived from minerals. Mainly sulfur preparations, copper preparations, phosphides. Such as copper sulfate, Bordeaux mixture, lime sulfur, zinc phosphide and so on. The more toxic, higher residual arsenic, fluoride, etc. are not within the scope of this Recommendation.
Third, organic synthetic pesticides
Limited to less toxic, low residue, safe to use organic full-range pesticides. After many years of application, it is recommended to use safe pyrethroids, partially and moderately toxic organophosphorus, organic sulfur and other insecticides, fungicides, and some low toxicity diphenyl ether herbicides. Such as: cypermethrin, deltamethrin, dimethoate, dichlorvos, phoxim, carbendazim, chlorothalonil, metalaxyl, triadimefon, acetaminophen, thiophanate-methyl, anti-indolazole, oxime, dilute Killed, grassy grams, Goor, Dole and so on. High residual organochlorine pesticides, secondary toxic fluoroacetamide, and metabolites that are "triple", such as ethylenethiourea, are not recommended.
Hospital Trolley,Hospital Patient Trolley,Hospital Dressing Trolley,Hospital Instrument Trolley
Jiangyin Kaili Health-Care Equipment CO., LTD. , https://www.kailimed.com