Non-pollution crop planting technology

With the frequent outbreak of food safety, the demand for pollution-free products will also increase. How to plant pollution-free crops, the following will give you guidance.

First, choose the right pesticide

1. Give preference to biological pesticides. Bioinsecticides and acaricides commonly used in production include: Bt, abamectin, Liuyangmycin, Huaguangmycin, anthocyanin, rotenone, matrine, veratrine, etc.; fungicides are: Jinggangmycin , kasugamycin, polyoxin, Wuycin, agricultural streptomycin and so on.

2. Reasonable use of chemical pesticides. The use of highly toxic, highly toxic, high residue, high bio-concentration, high tertiary (teratogenic, carcinogenic, mutagenic) pesticides and their complex formulations is strictly prohibited. Such as methamidophos, carbofuran, 1605.3911. omethoate, insecticidal fleas, ciprofloxa, 666, DDT, methylisohexose, aldicarb, methomyl, zinc phosphide, formazan, Methyl parathion, parathion, monocrotophos, organic mercury preparations, etc. Choose high-efficiency, low-toxic, low-residue chemical pesticides. Chemical insecticides and acaricides that are restricted to use include: trichlorfon, phoxim, dichlorvos, chlorpheniramine, cypermethrin, deltamethrin, fenvalerate, konjac, shuangmi, nisolon, Provisions such as alfalfa, chlorhexidine, diflubenzuron, diflubenzuron, buprofezin, etc.; bactericidal agents: Bordeaux fluid, DT, chlorpyrifos, carbendazim, chlorothalonil, thiophanate-methyl, dexamethasone, Ethylphosphine aluminum, metalaxyl, trisodium phosphate and so on.

Second, master pollution-free vegetable pesticide use technology

1. The right medicine. On the basis of fully understanding the performance and use methods of pesticides, according to the types of pests and diseases, select the appropriate pesticide type or dosage form and the appropriate concentration, do not artificially increase the use concentration.

2. The appropriate period of medication. According to the law of the occurrence of pests and diseases, strictly control the best period of prevention and treatment, so that timely medication. The disease requires prevention and control at the early stage of disease, control of the disease center, to prevent its spread and development, once the disease occurs in large numbers and spread it is difficult to control; biological pesticides are slow, use 2-3 days ahead of chemical pesticides.

3. Scientific medication. It should be noted that alternating use of pesticides with different mechanisms of action can not be monotonous for a long period of time to prevent pathogens or insects from developing resistance, which will help maintain the control effect and useful life of pharmaceuticals. In the early stage of vegetable growth, high-efficiency and low-toxicity chemical pesticides and biopesticides are mixed or used alternately. In the later growth stage, biological pesticides are the main components. Use pesticides should promote low-volume spray method, and pay attention to uniform spraying.

4. Select the correct spray point or site. According to the occurrence characteristics of different pests and diseases in different periods, the different parts of the plant were used as targets for targeted pesticide application. To achieve the purpose of timely control of pests and diseases, reduce pathogens and reduce the density of insect populations, thereby reducing drug use. For example, the occurrence of Downy Mildew is started from the bottom of the leaf, and the focus of the early control of Downy mildew is on the lower leaves, which can reduce the upper leaf disease.

5. Reasonably mix pharmaceuticals. The use of mixed methods to achieve a single application of pesticide control hazards. However, pesticides must be blended in order to maintain the original active ingredient or synergistic effect, without increasing toxicity to humans and animals and having good physical fusion. Generally neutral pesticides can be mixed; neutral pesticides and acidic pesticides can be mixed; acidic pesticides can be mixed; alkaline pesticides can not be mixed with other pesticides; microbial pesticides (such as Bt) can not be the same with fungicides Highly absorbing pesticides are mixed; mixed pesticides should be used with them.

6. The pesticide safety interval must be strictly implemented according to the deadline. The safety interval for pyrethroid pesticides was 5-7 days, organophosphorus pesticides for 7-14 days, fungicide chlorothalonil, zeocin, and carbendazim for more than 14 days, and the remaining 7-10 days. Pesticide compounders perform the safety interval in which the most effective active ingredient remains.

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