Chitosan-oligosaccharides are a kind of plant immune inducer, which induce plants to produce disease-resistant factors through their effects on plant cells. Chitosan-oligosaccharides have a certain yield-increasing effect on vegetables, also have a certain effect on various crop diseases such as Tomato late blight, pepper virus disease, peach perforation disease, watermelon wilt disease, etc. have good inhibitory or control effects.
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