The principle of "six yes, six no" in the selection of pesticides

Choose symptomatic and pollution-free drugs, not blindly choose and use highly toxic drugs

Each kind of germicidal or insecticide has its own range of disease prevention and pest control, and the choice of pollution-free pesticides should also be considered on the basis of prescribing the right medicine. At present, common disease-free pesticides such as: prevention and treatment of wheel rot, carbendazim, Jingangmycin, methyl thiophanate, chlorothalonil, etc., and protective mancozeb (Dasheng, Peck, etc.), isobarbazide (prohydantoin), thiram, bacillus, Bordeaux liquid, etc. The prevention and control of red spot and black spot disease are aluminum ethyl phosphate (ineffective to rotten fruit), mancozeb (Dasheng, Pink, etc.), Pollyan (polyantimycin, polyoxomycin), Bordeaux solution, dimethoate, chlorothalonil, isocarbamide (prohydantoin) and so on. The poisonous chlorpyrifos, such as apple leaf roll moth, cotton bollworm, peach heart borer, etc., which are poisonous to eat leaves and fruits (also known as Lesbon, and also against woolly aphids and Kang's pink scale, green bug bug), diazinon (Nongdele), BT biological insecticides, methomyl (methomyl), pyrethroids (cypermethrin, etc.); avermectin and triazoltin are used to control red spiders, apple red spiders and two-spotted mites (white spiders). The prevention and control of Liriomyza huidobrensis are diflubenzuron, thiazuron and so on. Tetramiazine was used to control Tetranychus Tetranychus, Tetramiazine was used to control Tetranychus urticae, Tetramiazine was used to control adult mites of Hawthorn red spider and apple red spider, pyridaben was used to control Hawthorn red spider or apple red spider eggs, carbendazim or methyl thiophanate was used to control red spot disease, and polyantimycin was used to control fruit rot.

It is necessary to use more single substance and combination drugs, and no or less compound and special drugs.

As most of the single drugs are the basic drugs of the compound medicine, for example, there are carbendazim in many compound fungicides, and the active ingredient of the compound medicine is still carbendazim after renaming, but it can be sold at a high price with a new name, 1kg 50% carbendazim is about 20 yuan, and can be sold for more than 40 yuan after changing the name. Therefore, we generally advocate the use of pure simple "old" drugs, no or less use of compound drugs. At the same time, those that can be solved with one kind of medicine can be solved without two kinds of drugs, and those that can be treated with both drugs can be solved without special drugs. for example, chlorpyrifos can control apple woolly aphid, Kang's pink scale, green bug bug, apple leaf roll moth, cotton bollworm, peach heart borer and other pests at the same time. Bordeaux solution and azole (Fuxing, etc.) prevent both rotten fruit and deciduous leaves, avermectin not only against red spiders, apple red spiders and two-spot mite.

We should use more drugs from famous-brand enterprises instead of small factories and miscellaneous-brand drugs.

In general, the quality of imported brand-name drugs is more reliable than that of domestic drugs. At the same time, the drug quality of domestic famous brand enterprises is more reliable than that of miscellaneous brand drugs, and the drug quality of large manufacturers is more reliable than that of small ones.

To calculate the cost and price, don't waste money unjustly.

The purpose of reducing costs is to increase efficiency. In production, most garden slices have more than 20% cost-saving space on pesticides, and a considerable number of fruit farmers think that they can catch insects and cure the disease, regardless of the cost. The worst thing is to spend good money to buy medicine that can not cure diseases and insects. The price of each active ingredient can be calculated according to the content of the active ingredient, and then compared with the price of the active ingredient of conventional pesticides, which is cheaper and which is cheaper; the price of the compound medicine is generally higher.

Look at the label and packaging. Don't be deceived.

First look at three certificates, production license, pesticide registration certificate, quality standard certificate, three certificates are indispensable; second, see whether there are effective ingredients and content, indispensable; third, see whether there is a factory inspection certificate, which is not unqualified; fourth, look at the factory name, address, postcode, production date, batch number, shelf life, missing one is unqualified; fifth, see whether the packaging is shoddy and whether the packaging mouth is loose. At the same time, pesticides should be used according to the amount specified on the pesticide label, and do not increase the concentration at will, so as not to increase the cost, increase the drug resistance of pests and even cause human and animal poisoning.

Try and ask for the bill first, don't use it without trying and leave no evidence.

In recent years, there are not many drugs with really new ingredients in the prevention and control of diseases and insect pests. For a few drugs that are indeed new ingredients, we should first do small-area tests, and then use them on a large scale after success. At the same time, ask the dealer for the bill when purchasing the drug, in case no evidence can be found in the event of drug damage.