据安徽农业大学严景华、蔡永萍、林鹤松研究，茶树喷施ZnSO4有增加鲜叶中氨基酸和还原精含量（低浓度效果更佳），提高超氧化物歧化酶（SOD）活性，降低过氧化物酶（POD）、多酚氧化酶（PPO）活性，减少自由基对膜的伤害，促进茶树的生长代谢，提高茶叶品质等作用。本试验仅从 According to the research of Anhui Agricultural University, Yan Jinghua, Cai Yongping and Lin Hesong, ZnSO4 in tea plants increased the content of amino acids and reducing essence in fresh leaves (better in low concentration), increased the activity of superoxide dismutase (SOD) and decreased the activity of peroxidase POD), polyphenoloxidase (PPO) activity, reduce the damage of free radicals on the membrane, promote the growth and metabolism of tea tree, improve tea quality and so on. This test only from