Seven levels of zinc (0, 0.005, 0.02, 0.08, 0.32, 1.28, 5.12mg·L~(-1)) , using nutrition culture, were given to study the effect of zinc on its growth, development and physiological metabolism in balsam pear (Momordica charantia Xinshijimeiya). The main results were submitted as fellows:(1) The demand of zinc for balsam pear to maintain its normal growth was increasing. The optimum concentration of zinc at seedling stage was 0.02 mg·L~(-1), sprouting and budding stage 0.08 mg·L~(-1), early flowering and fr...