Application of sugar composition for promoting plant growth and preventing plant diseases

The invention relates to agricultural application of a sugar composition prepared by taking alginate oligosaccharide and chitosan as main raw materials, in particular to promotion of plant growth and/or prevention of plant diseases, and plants comprise tomatoes, peppers, pumpkins, cucumbers, wheat and corn. The plant diseases comprise tomato yellow leaf curl virus, tomato gray mold and tomato late blight. The composition provided by the invention is derived from organisms and is safe to the environment, and the combination of alginate oligosaccharide and chitosan in the composition provided by the invention has a synergistic effect in the aspects of promoting plant growth and preventing plant diseases relative to the independent use of alginate oligosaccharide and chitosan, and has a wide application prospect in agriculture. 本发明涉及以褐藻胶寡糖及壳聚糖为主要原料制备的糖组合物的农业用途，具体为促进植物生长和/或预防植物病害，所述植物包括番茄、辣椒、南瓜、黄瓜、小麦和玉米。所述植物病害包括番茄黄化曲叶病毒病、番茄灰霉病、番茄晚疫病。本发明的组合物来源于生物，对环境安全，而且本发明中褐藻胶寡糖和壳聚糖的组合，在促进植物生长、预防植物病害方面，相对于二者单独使用产生了协同作用，在农业上应用前景广