1. Ms. Mou from the Chinese Cabbage Research Office of the Economic Crops Research Institute of the Provincial Academy of Agricultural Sciences replied: Black spots (usually small black spots) appeared on the inside of the Chinese Cabbage Gang, which was a physiological black spot caused by excessive nitrogen fertilizer used by farmers during the growth of Chinese Cabbage, which did not affect eating. "It's like freckles on our faces." Ms. Mou figuratively compares. -From Sohu News 2, when cabbage is harmed by pests (such as aphids) with piercing-sucking mouthparts, it will also produce black spots (small black spots), and a small amount usually does not affect eating. 3, if it is a large piece of black spots caused by mildew, it is not suitable for eating.

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