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点心防治棉花苗蚜是一种简单易行,经济有效的好方法,三年来我们示范推广这项技术44.9万亩次,共节约药费38.32万元,防治效果在90％以上。一、点心方法按使用浓度将药液配好后置于广口瓶内,用一根约2尺长小棍,头上绑一个蓄水能力较好的麻刷(如线麻绳头),一手提瓶一手拿麻刷,将药液点在棉苗顶心上。蘸一次药液可连续点3—4棵。 1990年我们在周树镇和徐庄乡大面积应用了这一新技术,均取得了理想的效果,治后棉蚜死亡率达95％以上。群众反映此法省水、省劲、省药、效果好。使用药剂及用药浓度、效果见表。 1990年防治棉苗蚜结果:
Dessert control cotton seedling aphid is a simple, cost-effective and a good way, three years we demonstrate the promotion of this technology 449000 mus times, a total of 383,200 yuan to save drugs, prevention and control of more than 90%. First, the dim sum method According to the concentration of the liquid with a good jar placed in the jar, with a stick about 2 feet long, the head tied a better ability to water hemp brush (such as linen hemp rope) One hand bottle of linen in one hand, the liquid point at the top of the cotton seedling heart. Dip a liquid can be continuous point 3-4. In 1990, we applied this new technology to a large area in Zhoushu Town and Xuzhuang Town, and achieved satisfactory results. After the treatment, the death rate of cotton aphid reached more than 95%. The masses reflect this method of provincial water, provincial strength, provincial medicine, good effect. Use of drugs and drug concentration, the effect shown in the table. Prevention and treatment of cotton seedling aphid in 1990 Results: