When we carry out agricultural operations, we must be an essential pesticide. Pesticides can effectively remove weeds, pests and diseases, and improve crop yield and quality. It is an indispensable agent in agricultural production. So you know how to use pesticides correctly? Let's take a look at the following.
First, the rational use of pesticides
The rational use of several pesticides can significantly improve the control effect and achieve the purpose of increasing efficiency. For example, Beauveria bassiana, Bacillus thuringiensis and other biological insecticides and chemical insecticides use better than the single use, insecticidal speed; Jinggangmycin and other chemical pesticides, the use of fungicides, on the one hand can improve the control efficiency The other side can also reduce drug resistance and cost of use.
The emulsifiable concentrate can be mixed with the aqueous agent. First, the aqueous liquid medicine solution is prepared, and then the aqueous liquid medicine solution is mixed with the emulsifiable liquid chemical solution. When the organic phosphorus wettable powder is mixed with other chemicals, the suspension rate may decrease. This will affect the efficacy of the drug, but also easily cause phytotoxicity.
The combination of these two pesticides does not cause phytotoxicity because their components are relatively stable. For example, the active ingredients of pesticides such as Beauveria bassiana and Bacillus thuringiensis are fungi. They can be mixed with chemical pesticides when controlling pests, but they should not be mixed with chemical fungicides, otherwise they will kill effective fungi; organic phosphorus and When pyrethroid insecticides and dithiocarbamate fungicides are mixed with alkaline pesticides, complex chemical changes will occur and the active ingredients will be destroyed. In addition, some pesticides will decompose under acidic conditions, and some pesticides cannot. Mixed with metal ion pesticides. When farmers and pesticide users are mixing pesticides, they should pay attention to the above problems to avoid the destruction of the active ingredients in the pesticides.
Second, the alternating use of pesticides
In order to improve the efficacy of pesticides, and not to use pesticides to leave agricultural products, contaminate soil diseases and make pests and diseases resistant, alternate rotation of pesticides is also an inevitable way to improve the efficacy.
1. Cross-use between bio-source pesticides, mineral-derived pesticides and organic synthetic pesticides, in the production of leafy vegetables, etc., the use of Bt emulsion, chlorbenzuron, cyanobacteria, trichlorfon to control downy mildew Disease, cross-use Bordeaux mixture, doxorubicin, metalaxyl, thiram, puke force to control crop soft rot, cross use of agricultural streptomycin Dt fungicide, Daisen zinc, dixon.
2, spray and smoked smoke cross-use, in the facility agriculture, in addition to the usual spray of drugs, you can also cross-use the smoked agent, and, for example, in disease control, can be used with spray spray chlorothalonil smoke tablets, Powder rusting aerosols, etc. Improve the control effect and reduce the deposition of pesticides in edible organs of vegetables such as leaves.
3. Cross-use of protective agent and systemic agent to prevent and cure cucumber downy mildew. Before the onset of disease, the non-endogenous protective agent Bordeaux mixture, thiram, chlorothalonil and other agents are the main agents. Plex, double-effect spirit, and metalaxyl are mainly used alternately.
Third, the use of pesticides under the right medicine
Before making the pesticide, carefully read the instructions, according to the characteristics and usage of the pesticide, according to the control object. For the prevention and treatment of cucumber black spot, it is best to use chlorhexidine. It is best to use powder rust or phenotype to prevent and control powdery mildew. It is best to use cucumber acne and anti-virus to control cucumber downy mildew. The new drug "Atailing" prevents disease and greatly increases production.
Fourth, we must master timely medication
According to China's plant protection policy and the occurrence of crop pests and diseases, we will promptly use the drugs in the early stages of the disease. For example, before the vegetables are sown, the soil can be sterilized and the seeds coated. The use of herbicides in field crops can prevent weeding before seedlings. Rice disease and corn size spot disease can be treated locally at the center of the disease to prevent slow delay.
The above is the introduction of the correct use of pesticides. These four points should be remembered. In the process of using pesticides, they can be mixed and rotated, but the correct method must be used to achieve the correct effect.
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