水绵又称青苔,是稻田常见的水生杂草,它不仅降低稻田地温影响水稻生年,且和水稻植株争夺养份,降低水流速度影响排灌。过去水绵防除,常采取布口袋装硫酸铜固定在稻田水流入口处,这一方法在田面较平的情况下效果尚可,反之,效果不够稳定。为了探求新的施药方法和药剂类型,1992年7月下旬水稻生年中期,本站在新团乡永久村进行了3种药剂的筛选试验,结果如下: 用95％硫酸铜1000克/亩(用乙醇溶解),50％扑草净75克/亩、浸种灵(TH—88)6毫升/亩3种药剂亩兑水50公斤水稻中期田间使用,结果硫酸铜和扑草净见效最快,药后24小时,水绵绿色部分全部变褐,药后5天全部萎缩失去生命力,浸种灵5天水绵色质开 Moss, also known as moss, is a common aquatic weed in paddy fields. It not only reduces the annual temperature of paddy and affects the annual growth of rice, but also competes with rice plants for nutrients and reduces the water flow rate and affects irrigation and drainage. In the past, for the prevention and control of sponge, it was often adopted that the bagged copper sulfate was fixed at the water inlet of the paddy field. This method was effective in the case of a relatively flat field, and on the contrary, the effect was not stable enough. In order to explore new application methods and types of pesticides, in late July 1992 in mid-year of rice, this site in the new village of permanent village of three kinds of pharmaceutical screening tests, the results are as follows: with 95% copper sulfate 1000 g / mu ( 50% prometryn 75 g / acre, TH-88 6 ml / acre 3 acres acre water 50 kg rice medium-term field use, the results of copper sulfate and prometryne net effect of the fastest, 24 hours after the treatment, the green part of the sponge is brownish, all the shrinkage of the drug for 5 days loses its vitality, and the green seedling of the seedling is soaked for 5 days