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稻瘟病是水稻主要病害之一,目前其特效防治药剂为三环唑(又名克瘟唑)。该药主要优点为: 1、防效高、药效稳定。最新有关研究结果表明:三环唑是一种杀菌性病害防治剂,通过抑制与稻瘟病菌侵染直接有关的黑色素的合成,使病菌不能侵入稻株角质层和细胞壁,从而有效地预防病害的发生,其防效一般在90％以上。此外由于该药无直接的杀菌作用,对稻田腐生菌和拮抗菌十分安全,并且不会对稻瘟病菌产生选择压力,病菌也就不易产生抗药性。 2、内吸性强,残效期长。三环唑施用后,能迅速地被稻株吸收、传导。即使施药小时后遇雨,药剂也不易被冲刷掉,残效期可长达10—15天,优于稻瘟净和异稻瘟净等药剂。
Rice blast is one of the main diseases of rice. At present, its special effect is tricyclazole (aka ketoclazole). The main advantages of the drug: 1, high anti-efficacy, efficacy and stability. The latest research results show that: tricyclazole is a bactericidal disease control agent, by inhibiting the infection of Magnaporthe grisea directly related to the synthesis of melanin so that bacteria can not invade the stratum corneum of rice plants and cell walls, which effectively prevent disease Occurred, the general effect of more than 90%. In addition, because the drug has no direct bactericidal effect, saprophytic bacteria and antagonistic bacteria in paddy field are very safe, and will not produce selective pressure on the rice blast germ, and the bacteria will not easily produce drug resistance. 2, strong absorption, long residual period. After tricyclazole is applied, it can be rapidly absorbed and transmitted by rice plants. Even if the application of small hours after the rain, the drug is not easy to be washed out, the residual effect can be as long as 10-15 days, better than the rice blast and the net blast different drugs such as net blast.