L~-1 had the greatest influence on the content of chl,in which the content of chl a b were 92.4% and 90.2%of the contrast respectively.

• L~(-1)的处理对盾叶薯蓣叶绿素的含量影响最大；叶绿素a、b的含量分别为对照的92.；4%25和90