蚂蝗是水田中的大吸血虫,当人下水劳动时,即吸着于下肢皮肤上吸血,有时两下肢可吸着数十条,拉也拉不掉;由于蚂蝗还可分泌一种抗凝血物质——水蛭素,吸血后使创口流血不止,下肢静脉曲张者,更易形成溃疡,经久难愈,对广大贫下中农的身体健康有颇大的危害。当地 Grasshopper is a large blood-sucking insect in the paddy field. When people work in the water, they suck on the skin of the lower extremities. Sometimes they can suck dozens of legs and they can’t pull it off. The leech also secretes an anticoagulant. Substance - hirudin, bleeding after bleeding so that the wound, lower extremity varicose veins, easier to form ulcers, prolonged refractory, the health of the majority of underprivileged farmers have considerable harm. local