How to control tomato thorn skin? Tomato thorn skin lice can also be called tomato embroidery 瘿螨, tomato 瘿螨, belonging to the genus Panicidae, mainly harming tomato, pepper, eggplant, potato, tobacco and other solanaceous crops. Today's Xiaobian key point is to say that the tomato thorn skin control measures, I hope to help everyone.

1. Tomato thorns are generally wintering in the soil and protected vegetables. The symptoms of the disease occur in the middle and late May of each year. The period from July to September is the prosperous period, and in mid-to-late October, because of the slight decrease in temperature, The symptoms are terminated.

2. The optimum temperature for the growth of tomato thorns is 20-35 degrees, the relative humidity is 45-70%, and the density of insects is high when the temperature is high and dry, which is serious. The adult is mainly hidden in the epidermal tissue of the mesophyll, and will lay eggs under the hair.

3. Tomato thorn skin lice begin to harm in the middle and late stages of growth of crops such as tomatoes, peppers and eggplants. After the tomato is harmed, the old leaves are not curled, the texture is brittle, and the normal luster is lost. After the young leaves are damaged, they curl in the direction of the leaf back and shrink and thicken. As the density of the insects increases, the back of the leaves gradually appears pale spots. If the back of the leaves is observed, there is a silver-light reflected light. After the fruit is damaged, the surface of the fruit will lose its luster and become rough with small cracks. When the tomato thorn skin is seriously damaged, the stem and the fruit will be hardened and light brown, and the leaves of the plant will be yellowed and dead.

4. For the plot where the tomato thorns are found, the leaves of the residual plants are removed in time after the harvest, and the leaves of the residual plants are concentrated out of the garden for incineration or burial; the land is turned over and the sputum is irrigated for 15-20 days. When the tomato thorn skin is found to be harmful, spray the acaricide immediately; focus on the back of the young leaves and the tender stems, flowers and young fruits. The control can be used with 1% insecticide emulsion (insecticide, insect) Shuguang, mites clear) 2500-3000 times liquid; 73% gram emulsifiable concentrate 2000-3000 times liquid; 0.5% Haizheng three-order emulsifiable concentrate 3000-5000 times liquid.

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