![<?echo $_SERVER['SERVER_NAME'];?>](/template/twentyseventeen/skin/images/header.jpg)
Before purchasing pesticides, it is necessary to determine the types of pests and diseases that need to be controlled, what to treat, what to cure, and then to choose pesticide varieties. When purchasing drugs, carefully identify the label and description of the pesticide . All qualified pesticides are marked on the label and the manual with the name of the pesticide, the content of the active ingredient, the registered trademark, the batch number, the date of manufacture, the shelf life and three certificates - the pesticide registration certificate. No., approval certificate number, product standard number, and product manual and certificate. Do not buy pesticides that are not fully certified. In addition, the outer packaging of the pesticide should be carefully inspected. Do not buy any pesticides whose labels and instructions are unclear or have no formal label.
If the powder, wettable powder, and soluble powder have agglomeration; the liquid agent has turbidity; the emulsifiable agent is opaque; the granules have too much powder, etc., and the above pesticides are not suitable for purchase of pesticides or inferior pesticides. In addition, the purchase of pesticides should pay attention to more than one pesticide or one multi-drug of pesticides, do not buy the wrong, especially insecticides . Such as Dagongchen, four seasons red, one pass net, phlegm, imidacloprid, etc., all are 10% imidacloprid wettable powder, belonging to more than one drug; and the same pesticide called rice insect net, some are insecticide and BT The compounding agent is a compounding agent of pyrethroid pesticides and organophosphorus pesticides, and some are a mixture of several organophosphorus pesticides. Although the drug names are the same, the active ingredients are completely different.
Precautions for farmers when applying pesticides:
First, it is necessary to apply the medicine symptomatically and timely. First of all, it is necessary to accurately identify the types of pests and diseases, determine the key control targets, and select appropriate pesticide varieties and dosage forms according to the occurrence period and degree of occurrence. To prevent and treat diseases, spray protective agents before the disease occurs. After the disease occurs, spray the therapeutic agent. To control diseases, we must grasp the principle of first protection and treatment, seize the best timing of application, and continue to use drugs several times to achieve good results.
The second is to use drugs rationally. In the case of ensuring the control effect, do not blindly increase the dose, concentration and frequency of application, and excessive application is highly susceptible to phytotoxicity. In the effective concentration range, low-concentration drugs should be used as much as possible for prevention and control. The number of prevention and treatment should be determined according to the residual effect period of the drug and the degree of occurrence of pests and diseases.
The third is to pay attention to the method of application. Different dosage forms of pesticides should be applied differently. Generally, emulsions and wettable powders are mainly sprayed and poured; powders are mainly sprayed; granules are mainly applied by spreading or deep foundation; and liquid absorbing agents are sprayed, sprayed, poured, coated Stems can be. Pesticides with different mechanisms of action should also adopt different methods of application to achieve the highest control effect. According to the occurrence of the disease, the activity of the pests and different pesticide dosage forms, different application methods and application time are selected.
The article was published by the China Pesticide Network , please indicate the source!
Instruments And Apparatuses,Circular Knitting Machine Instrumentation,Knitting Machine Meter,Knitting Machine Accessories
Changzhou Longfu Knitting Co., Ltd. , https://www.circularmachine.com