稻瘟病是水稻主要病害之一,在我省每年都有不同程度的发生和为害,造成水稻减产,严重田块颗粒无收。当前采用三环唑、富士一号等药剂防治,虽然防效较好,但价格太高,农民投入成本大。为了寻找价格较低廉、防治效果好的新农药品种,近年来我们引进了45％瘟特灵SC进行试验研究。在1989年试验的基础上,1991年选择历年稻瘟发生严重的广丰、南昌县和江西省良种繁殖示范场等地进行大面积试验示范,防治面积3.2万亩次,防治效果稳定在76％以上。与三环唑对照药剂比较,在同一剂量之下,防效相仿;但成本减少一半,深受用户的好评。现将试验示范结果整理如下: Rice blast is one of the main diseases of rice. In our province, the occurrence and damage of rice occur in varying degrees each year, resulting in the decrease of rice yield and the serious failure of harvesting of the rice field particles. The current use of tricyclazole, Fuji One and other agents control, although the control effect is better, but the price is too high, farmer input costs. In order to find new pesticide varieties with lower cost and good control effect, we introduced 45% pterygium SC in recent years for experimental research. On the basis of the experiment in 1989, a large area experiment demonstration was conducted in Guangfeng, Nanchang and Jiangxi provinces in 1991, in which the selection of rice blast was very serious. The control area was 32,000 mu and the control effect was stable at 76% the above. Compared with the tricyclazole control agent, under the same dose, the control effect is similar; but the cost is reduced by 50%, which is highly praised by users. The demonstration results are now organized as follows: