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稻田牙齿草(眼子菜)是一种繁殖力强、蔓延迅速的恶性杂草。我市郊区有三分之一稻田普遍发生,既影响水稻的增产,又耗费大量劳力。在省农科所和省植物所的帮助和具体指导下,自1967年开始大面积化学除草试验,证明扑草净对防除稻田牙齿草有良好的效果,但由于扑草净的生产受到原料限制,远远满足不了广大农村的需要。一九六九年又试用了敌草隆、灭草隆、非草隆和除草剂一号等几个取代脲类的除草剂,其中敌草隆对稻田牙齿草有较好的防治效果,近几年来已逐步在郊区农村推广使用。同样,敌草隆也存在药源不足的问
Dental grass in paddy field (Eichhornia crassipes) is a kind of malignant weed with strong propagation and rapid spread. One-third of the paddy fields in the suburbs of our city are common, affecting not only the yield increase of rice but also labor-intensive. With the help and guidance of the Provincial Agricultural Institute and Provincial Institute of Botany, a large area chemical weeding test since 1967 has proved that prometryne has a good effect on the prevention and control of dental grass in paddy fields. However, since the production of prometryne is restricted by raw materials , Far can not meet the needs of the vast rural areas. In 1969, we also tried several herbicides that displace urea, such as Diuron, Membrane, Non-grass, and Herbicide No. 1, of which diuron showed a better control effect on denture grass Over the past few years has been gradually promote the use of rural areas in rural areas. Similarly, diuron there are also insufficient sources of questioning