细绿萍的稻田放养是解决当前农业生产中有机肥源不足的重要措施之一.但是,由于细绿萍萍体大,生长速度快,因而倒萍费工大,致使部分稻田不能适时倒萍.针对这一问题,我们于1979年对五氯酚钠、敌稗、杀草丹等八种除草剂的倒萍效果进行了筛选试验,初步明确了五氯酚钠倒萍的效果. Fine green Luping’s paddy field stocking is one of the important measures to solve the problem of insufficient organic fertilizer source in agricultural production, however, due to its large size and fast growing speed, Pingsiping large-scale work, resulting in some paddy fields can not be timely pour Ping. In response to this problem, we conducted a screening test on the anti-infective effects of eight herbicides such as sodium pentachlorophenate, propanil, and herbicide sodium in 1979, and initially clarified the effect of sodium pentachlorophenate on the anti-infectives.