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为开发防治烟草花叶病的新型药剂,采用大田试验研究了壳寡糖纳米银溶液、壳寡糖席夫碱纳米银溶液及宁南霉素对烟草花叶病的田间防治效果。结果表明,壳寡糖和壳寡糖席夫碱的纳米银溶液对烟草花叶病的防治效果均优于宁南霉素,以预防和治疗效果分别达到53.32%、24.95%的壳寡糖席夫碱纳米银溶液为最好,能够减轻病株叶绿素和类胡萝卜素含量的下降幅度,增强烟株的光合作用强度,使烟株的抗病性得到提高。壳寡糖及其衍生物的纳米银溶液对烟草花叶病具有较好的防治效果,为今后开发绿色、高效的抗TMV药剂提供了新思路。
In order to develop a new agent for controlling tobacco mosaic disease, field experiments were carried out to study the control effect of chitosan oligosaccharide nanosilver solution, chitosan oligosaccharide Schiff base nanosilver solution and ning nanmycin on tobacco mosaic disease. The results showed that the chitooligosaccharides and chitooligosaccharides nanosilver solution of silver nanoparticles on tobacco mosaic disease prevention and control were better than Ningnanmycin to prevent and treat the results were 53.32%, 24.95% chitosan Fufang nano-silver solution is the best, can reduce the decline of chlorophyll and carotenoid content of diseased plants, enhance the photosynthesis intensity of tobacco plants, tobacco plant disease resistance has been improved. The nanosilver solution of chitooligosaccharides and their derivatives has a good control effect on tobacco mosaic disease and provides a new idea for developing a green and highly effective anti-TMV agent in the future.