There are two sources of P. edodes in the field, that is, the locusts in the previous generation of domestic locusts spawned and migrated to the ground. Therefore, in the prevention and control work, accurate and timely measurements must be made, and there should be a long-term effect on the selection of pesticides. Inhalation of pesticides in combination with quick-acting fumigation and contact with pesticides is as follows: 1. Fields containing 100 to 100 head hoppers should be treated with 25% buprofezin (buprofezinone) wettable powder 45 to 50 g or 10% at 667 m2 in young instar nymphs (below 3 years of age). Imidacloprid wettable powder 15 ~ 20 g watered evenly 50 kg spray, this drug can be through the contact and the role of suction (inhibition of young mink skin) to achieve control, eliminate the purpose of fly fleas, the duration of up to 20 days. 2. In the field where the amount of maggots is in the range of 2,000 to 5,000 heads, 50% of dichlorvos EC must be added at the same time when spraying “Pentazoyl†or “Imidaclopridâ€, and the concentration is preferably 400 to 500 times (concentration Highly easy to burn seedlings, can quickly control the amount of insects within 2,000 heads. 3. The plot with more than 5000 heads of mandrill must quickly organize the use of poisoning soil fumigation method to prevent and control, otherwise it will be able to make the rice top and lodging in a short time. The method is: to drain the field water, 667 square meters with 50% dichlorvos EC 250 ~ 300 grams and 25 ~ 30 kg of wet sand and mix well, heap stuffy for 3 to 5 hours, after the dew dry evenly spread, 4 pm Before the end of the application, more than 90% of the insects in the field can be killed after 1 hour of spraying, and then the above spraying method can be used for prevention and treatment. Disposable Pillow Protectors,Disposable Pillow Cases Medical,Disposable Pillow Case Covers,Disposable Bedsheet And Pillow Cover Suzhou JaneE Medical Technology Co., Ltd. , https://www.janeemedical.com
How to Control Pesticides in Different Rice Fields