我市从七六年开始,利用造纸废液生产“腐植酸杀虫乳剂”。现有湘东、老关等十六个公社(场、镇)二百二十五个大队,一千九百一十九个生产队,大面积推广使用腐植酸杀虫乳剂。几年来,全市建起了十一个半机械化生产点,共生产了一百多万斤腐植酸农药,使用面积达六十多万亩次。每亩用药二斤,可防治稻纵卷叶虫、稻苞虫、稻螟虫等,特别是对水稻浮尘子、稻飞虱有特效,防治效果达90％以上。实践证明:腐植酸 Our city from seventy-six years, the use of waste paper production “humic acid insecticidal emulsion.” The existing Xiangdong, Lao Kuan and other communes (field, town) 225 groups, 1919 production team, the widespread use of humic acid insecticidal emulsion. Over the past few years, the city has built 11 semi-mechanized production sites and produced over one million kilograms of humic acid pesticides in a total area of ​​over 600,000 mu. Medication per kilogram of pesticides, can prevent rice leaffolder, rice shell insects, rice stem borers, etc., especially for rice floating dust, planthoppers have special effects, prevention and control of more than 90%. Practice shows that: humic acid