The common diseases of cowhide are brown spot and leaf spot, which can be controlled by carbendazim or Bordeaux mixture. If pests are found, scientific drugs should be used to prevent them.
Harvest: 30 ~ 40 days after planting, the leaves can be peeled off for later use, 3 ~ 5 pieces are peeled off from each plant, and 4 ~ 5 pieces are left for further growth. According to the season and growth, determine the number of leaves to be peeled. When the growth is fast in June-July, it can be harvested for 4-5 times, and more than 4000kg of fresh leaves can be produced per 667m2.
Seed reservation:165438+1early October, dig roots and cut leaves, dig pits and bury them to prevent freezing injury. Sowing in early April of the following year, the row spacing is 35 ~ 1 125px, and seeds can be harvested in early July, with a general yield of 50 ~ 60kg per 667m2.