氨基寡糖素对辣椒病害的控制作用研究

The Reasearch of Chitosan-Oligosacchrides on Controlling of the Pepper Diseases

用 2 0 %氨基寡糖素防治辣椒疫病、病毒病和枯萎病 ,结果表明 ,在疫病、病毒病发病初期喷施 ,防治效果分别达到 6 9 0 3%～ 73 91%和 81 36 % ;枯萎病发病后喷施 ,病株率得到有效控制。防治疫病最佳使用浓度为 5 0 0～ 80 0倍液 ,防治病毒病、枯萎病最佳使用浓度为 5 0

The 2.0% chitosan-oligosacchrides was applied on controlling of the pepper fusarium wilt, mosaic viruc and phytophthora blight. In the early days of the pepper fusarium wilt or mosaic viruc, the effect of prevention and control of the pepper fusarium wilt reached to 69.03%～73.91%. The effect of prevention and control of the pepper mosaic viruc was 81.38%. When the phytophthora blight was taken bad, the pepper was spryed the 2.0% chitosan-oligosacchrides .The infected plant percentage of the pepper phytophthora blight was controlled effectively. It was the suitable concentration of controlling of the Pepper fusarium wilt that 2.0% chitosan-oligosacchrides was diluted 500～800times.The 500 times diluted solution was the appropriate concentration to control the mosaic viruc and phytophthora blight.