水上漂是水田内恶性杂草之一。这种杂草很顽固,它的叶片均漂浮在水面上,不仅与水稻争夺养分,同时又严重地影响水田温度的提高,是水稻增产的大敌。用人工很难除净水上漂,使用一般化学除草剂防治效果也不佳,且易生药害。1982年,开原县八宝乡农科站从吉林农药厂引进25％西草净除草剂,并做了防治水上漂杂草的药效试验,防治效果明显。西草净内具有内吸传导选择性的除草剂,对水上漂有特效,对牛毛草也有一定杀伤作用。它通过植株根系或叶片传导全株,抑制杂草光合作用,阻 Water drift is one of the malignant weeds in paddy fields. This weed is very stubborn, its leaves are floating on the water, not only compete for nutrients with rice, but also seriously affect the temperature increase in paddy fields, rice is the enemy of increased production. It is difficult to use artificial water in addition to floating on the drift, the use of general chemical herbicide control effect is not good, and easy to injury. In 1982, Kaibao County Agricultural Science and Technology Station Babao from Jilin pesticide plant introduced 25% of the net grass herbicide, and made the prevention and treatment of water bleaching weeds efficacy test, control effect is obvious. Seagrass net with a selective absorption of herbicides, floating on the water with special effects, there is also a certain anti-Mao Mao role. It is through the plant roots or leaves conducting whole plant, inhibit weed photosynthesis, resistance