Effect of Foliage Spraying Manganese on Peroxidation of Membranes and the Membrane Defensive System of Pisum Sativum

In different growth periods,the different concentractions of manganese sulfate solutions are sprayed on the surface of leaves of Pisum Sativum.The results show that the activity of SOD,CAT is promoted,the content of MDA and the speed of O·-2 production are reduced in seeding,buding and flowering periods.Spraying 0.1%-0.2% of manganese sulfate solution on the surface of leaves of Pisum Sativum is best before flowering period.