Agricultural non-point source loss is one of the major factors resulting in surface water eutrophication.The production of Phyllostachys praecox shoot is a pillar industry of Lin an City.However

the high rate of mulching and fertilizer application is undoubted to bring nitrogen and phosphorus into water body.Therefore

the control of nitrogen and phosphorus runoff export is an important task in Phyllostachys praecox n.4 different buffer strips were set up in situtomonitor N and P runoff losses and investigate their control effects on N and P runoff from Phyllostachys praecox stands.The results showed that particulate N and P were the predominant forms in runoff

accounting for more than 50% of the total losses.Fertilization and rainfall intensity were the main factors influencing the runoff export.The highest runoff export of N and P in Phyllostachys praecox was 1006.2 and 387.6 g / hm2among the 4 treatments.In comparison with other treatments

the ryegrass strip reduced the runoff export greatly

that is 777.1 and 228.9 g/ hm2of N and P.The runoff export of N and P was 632.80 and 230.74 kg/hm 2in the treatment of Phyllostachys praecox forest+ Bamboo Charcoal ; while in the treatment of ryegrass+Bamboo Charcoal

the runoff export of N and P loss was 1098.6 and 366.5 g/hm2.Compared with phosphorus

the nitrogen runoff loss was much more serious.The present results indicated t hat grass buffer strip could effectively control t he N and P losses with runoff from Phyllostachys praecox stands.