Sulfur dioxide is now the principal air pollutant in China. Its harmful effects on plants have been studied for nearly one hundred years, but the mechanism of injury still remains unclear. SO2 has been generally taken...Sulfur dioxide is now the principal air pollutant in China. Its harmful effects on plants have been studied for nearly one hundred years, but the mechanism of injury still remains unclear. SO2 has been generally taken as a reducing air pollutant. It is oxidized to sulfate after entering leaf cells. The toxicity of SO4= is much less than that of either SO3= or HSO3-. Therefore this oxidation has been展开更多
文摘Sulfur dioxide is now the principal air pollutant in China. Its harmful effects on plants have been studied for nearly one hundred years, but the mechanism of injury still remains unclear. SO2 has been generally taken as a reducing air pollutant. It is oxidized to sulfate after entering leaf cells. The toxicity of SO4= is much less than that of either SO3= or HSO3-. Therefore this oxidation has been