Yes, and a lot. The fruit trees planted now will hang salt water on the main stem of the tree when they bear fruit. First, drill a hole in the trunk until it penetrates the bark, and then hang salt water on the tree with special tools. Saline is composed of hormone drugs and nutritional drugs, both of which have been diluted with water. However, some "black-hearted" growers hang a lot of hormone drugs on their trees. This kind of tree has large fruit, large quantity and short growth period, and this kind of fruit also contains hormones harmful to human body. Now not only trees but also vines are treated with hormones, especially watermelons. When the watermelon is almost ripe, hang salt water on the vine in front to let the watermelon continue to grow, which is very sweet.