Spray pesticides to “make profits and avoid harmâ€
There is a saying that "to benefit and avoid harm" means that everything should be toward a favorable side and avoid the harmful side. Similarly, spraying pesticides to control pests and diseases is also true.
For example, when high temperature and strong light, most of the pests stop moving and hide in the cool backlight. If the pesticide is sprayed at this time, the pesticide is not easy to be sprayed. Second, the volatile loss of the pesticide is high, the decomposition of the drug is fast, and the effect is effective. It is greatly reduced. Thirdly, when the temperature is too high, the medicine is sprayed. Because of the strong volatility of the medicament, it is easy to cause operator poisoning.
For example, although it is cool in the morning, under normal circumstances, the dew is very heavy. If you take the medicine down at this time, the medicine will be diluted by the dew and the effect will be reduced. Moreover, the pests have not yet come out, so the insecticidal effect. It is bound to be greatly reduced, but it is very embarrassing for the sprayers to get wet.
In addition, many farmers have saved money for the map, and the amount of water dispensed with the spray is too small, causing the concentration of the liquid to be too high. After the liquid is sprayed on the foliage of the crop, it is easy to cause phytotoxicity because of the rapid evaporation of water. At the same time, some farmers When spraying, you are cool, don't take any protective measures, and some even "bare-faced" cause the skin to absorb pesticides and poison; others also like to talk and laugh and smoke and drink when spraying, so it is easy to cause "poisonous from mouth" ".
So how do we come to "benefit and avoid harm"? The author summarizes the personal experience of dealing with farmers in the past 45 years. He believes that spraying pesticides must first change the all-weather smoking habits. It is advisable to choose cloudy or sunny days after 8-10 hours of dew. After 5~7 pm (before and after sunset), pests are active. It is more appropriate at the time; secondly, the amount of pesticides should be appropriately increased to ensure that the dosage of each acre is more than 45 kg (about 3-4 sprayers) to achieve the best control effect; long-sleeved shirts should be worn when spraying again. , trousers, conditional wear special protective clothing, wearing a mask and spraying the body in time to clean the body, spraying, do not smoke, drink water and snacks, as little as possible to speak, it is wise.
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