Effects of Different Concentrations of Potassium Chloride on Tobacco Photosynthesis, Main Enzyme Activity of Carbon and Nitrogen Metabolism
The e ffects of different concentrations of potassium chloride on tobacco photosynthesis, main enzyme activity of carbon and nitrogen metabolism were studied in the study by hydroponic experiment. Our results showed that: the application of 2 mmol/L to 4 mmol/L KCl promoted tobacco photosynthesis, and sucrose phosphate synthase, sucrose synthase, invertase, α-amylase, β-amylase enzyme activity promoted carbon metabolism of tobacco. In addition, 2 mmol/L KCl treatment effectively improved tobacco nitrate reductase and neutral protease activity, which stimulated tobacco nitrogen metabolism.