The tomato was damaged by the thorns, the leaves of the plants became thicker and easily broken, the leaves and stems were gray-brown, and the surface of the fruit had small cracks. Prickly thorn is a new pest that has emerged in recent years. It mainly harms tomatoes, peppers, and eggplants cultivated in protected areas. It occurs in 20 generations a year, overlapping generations; suitable temperature for growth is 20-35 ° C, relative humidity is 45%. 70%, the density of insects is high when the temperature is high and the drought is serious. Prickly thorns are more harmful in the late growth stages of crops such as tomatoes, peppers and eggplants. The old leaves of tomato often do not curl after being damaged, but the texture is brittle and loses normal luster. After the young leaves are damaged, they are curled toward the back of the leaves, shrinking and thickening. As the density of the insects increases, the leaves are gradually pale, and the epidermis is raised. The back of the leaf has a silver-reflected light; after the fruit is damaged, the epidermis loses its luster and becomes rough, accompanied by small cracks (mesh). When the hazard is serious, the stem and fruit of the tomato are hardened and light brown, and the leaves of the plant are yellow and dead. In the plot where the thorns are licked, the leaves of the stalks must be removed in time after harvesting, concentrated burning, deep-turning the soil and soaking for 15 to 20 days. During the growing period of tomato, there was a hazard of thorn skin, and the spraying of acaricide was carried out as early as 5 to 7 days. The focus was on spraying the back of the young leaves and the young stems, flowers and young fruits. Applicable medicines include 1% insecticidal emulsion (Pesticide, insect mites, mites clear) 2500-3000 times liquid, 73% gram emulsifiable concentrate 2000-3000 times liquid, 0.5% Haizheng Sanling emulsifier 3000-5000 times liquid Wait. Portable Cable Reel,Garden Water Hose Reel,Retractable Garden Hose Reel,Wall Mounted Garden Hose Reel NINGBO QIKAI ENVIRONMENTAL TECHNOLOGY CO.,LTD , https://www.water-hose-reel.com