During the summer season, the crops grow vigorously and are vulnerable to pests. Attention should be paid to the application of pesticides:
First, the high temperature at midsummer midsummer, the application of pesticides can lead to drug poisoning, adverse to human health. Therefore, the application time should be arranged before 9 o'clock in the morning, after 4 o'clock in the afternoon, the best effect of pesticide control.
Second, many pests only come out in the evening activities, such as rice aphids, cotton bollworms and other pests afraid of heat afraid of light, high temperatures and strong light at noon, they hide, resulting in poor application of high temperature at noon.
Third, the application of pesticides at high temperatures at noon, due to transpiration of crops, increased crop water supply burden, so that the crop leaves produce phytotoxicity.
Fourth, the liquid volatile at high temperatures at noon, reducing the efficacy and control effect.
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