How to prevent carrots in time?

Radish radish is the most serious aphid that harms radish, distributed nationwide. Also known as leeks, leeks, leeks, can be harmful cabbage, cabbage, cherry radish, kale, broccoli, seaweed, Brussels sprouts, kale, leek and other cruciferous name special rare vegetables. Often mixed with peach aphid. It is more harmful to the radishes, and it is concentrated on the back of the leaves and the young leaves and growth points, so that the stems are short-bundled and curved, the young leaves are deformed, the growth points are atrophied, the plants are short, and they can not be convoked, flowered and seeded. The seeds are not full and the germination rate is low. Therefore, radish should pay attention to the prevention and control of radish to protect the leaves, promote convulsions, flowering and seeding, and increase seed yield. The specific prevention methods are as follows:

In the middle stage of radish growth, pay attention to check the leaves and growth points, and find that when the leaves and growth points are contaminated by radish, it is necessary to spray 2-3 times of 2-3 times of 25% aqueous solution of imidacloprid or 800 times of 10% acetamiprid aqueous solution. Or 1500 times 25% aqueous solution of pymetrozine, or 1500 times 20% thiamethoxam aqueous solution, or 1000 times 4.5% cypermethrin aqueous solution, spray once every 10-15 days, evenly spray all the leaves to start with water drops It is advisable to drop it down. In addition, in the middle and late growth of radish, it is necessary to pay attention to moisturizing and moisturizing to prevent the leaves from wilting due to lack of water, because the radish will be more seriously affected by the radish when the weather is dry. Linyi Fertilizer Network Copyright
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