Effect of Topping of Tobacco Plants on Mineral Elements in Upper Leaves

Abstract

Topping and wiping is a very important step in the tobacco process, which not only improves the redistribution and utilisation of nutrients in the tobacco plant and improves the quality of tobacco, but also inhibits the reproductive growth of the tobacco plant, prolongs the time of nutrient growth and improves the quality of tobacco. In this experiment, by comparing the changes of min-*