黄瓜植株长势较弱时,很容易感染细菌性斑点病,继而导致灰霉病和霜霉病的大发生,造成黄瓜严重减产。对于这三种病害,用化学农药进行防治有时效果不甚理想,甚至会发生中毒现象。为了解决这些问题,近年来,从黄瓜植株的营养角度出发,人们发现,用红糖发酵液不仅能防 Cucumber plants grow weak, it is easy to infect bacterial speckle disease, which in turn led to the occurrence of gray mold and downy mildew, resulting in a serious cucumber cut. For these three diseases, the use of chemical pesticides sometimes prevent the effect of less than ideal, and even poisoning. In order to solve these problems, in recent years, from the nutritional point of view of cucumber plants, people found that brown sugar fermentation broth can not only prevent