利用草蛉防治害虫,需要饲养和释放大量的草蛉。用天然饲料如蚜虫养草蛉受到种种限制。因此,发展人工饲料是解决大规模饲养繁殖草蛉的关键。用啤酒酵母人工饲料养中华草蛉成虫(参阅本刊1975年11期《怎样饲养草蛉》一文),各地反映都比较好。产卵前期仅3—4 The use of grass to control pests requires the feeding and release of large quantities of grass. With natural feed such as aphids grass 蛉 are subject to various restrictions. Therefore, the development of artificial feed is the key to solving the problem of large-scale rearing and breeding grass. Use of yeast brewing yeast artificial breeding grass adult (see article published in 1975, 11 “how to raise grass,” a text), all around the better. Pre-spawning only 3-4