How to increase efficiency by using microbial pesticides
How to improve the efficiency by using microbial pesticides? Please guide the use of microbial pesticides can use the following methods to increase efficiency: appropriate concentration, low scientific interval solution content, poor control effect, otherwise, it is easy to cause waste or drug damage. The control effect can be ensured only when appropriate bacterial agents are applied in time to obtain sufficient amount of pathogenic bacteria for pests and bacteria. For example, bacterial insecticides generally use 2200-2500g of bacterial powder with live spores of 10 billion / g per hectare, with large population, overlapping generations, uneven age, large dosage per unit area and short interval. Bacillus thuringiensis controlled Plutella xylostella at intervals of 10 to 15 days and Chilo suppressalis at intervals of 5 to 6 days. Uniform spraying of biological pesticides is generally dominated by stomach toxicity, uniform spraying can improve the control effect. Weigh the amount of powder before use, add a small amount of water to stir into a paste, shake the emulsion well before use, mix in the required water 750-1000 kg per hectare, and stir well. Adding 0.1% synthetic washing powder, soap horn or tea powder as adhesive can improve the spraying effect. The correct formula and the mixed use of biological pesticides have strong pertinence in insecticidal and disease control. The mixed use of pesticides can expand the scope of application and improve work efficiency, especially in the case of overeating pests. However, it should not be mixed with alkaline pesticides and internal absorption organophosphorus insecticides, and should not be mixed with fungicides and antiviral agents. When the formula is mixed, it should be used whenever it is used, and it should not be kept for a long time. Spray medicine after rain on the same day in case of rain, make up spray immediately after sunny day. The safe use of biological insecticides is very toxic to silkworm, and it is forbidden to be used within 2 km around the silkworm area. Click to get more pesticide application techniques
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Which pesticides cannot be used to grow cucumbers?
Which pesticides cannot be used to grow cucumbers? Please give guidance on the cultivation of cucumbers the following pesticides are not allowed: pesticides that have been banned: 666, DDT, insecticide, fluoroacetamide, arsenic, Xilisheng, Sanli San. Highly toxic pesticides: methamidophos, methamidophos (3911), phosphos (Suhua 203), parathion bowl (1.
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The method of distinguishing the advantages and disadvantages of phosphate fertilizer
The following describes the methods to distinguish the advantages and disadvantages of phosphate fertilizer: observe the color and shape of phosphate fertilizer, the color of phosphate fertilizer should be grayish white, the shape is powder, if the color is white or yellow, it may be because the acid treatment is incomplete and its phosphorus content is low. Smell, phosphate fertilizer should be slightly sour, if there is no such taste, it means that it has been in production.
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