사료작물 재배중 아질산성질소와 질산성질소 함량의 변화

Changes of nitrite and nitrate nitrogen contents during period of pasture plants

Nitrite and nitrate nitrogen contents of 3 samples of pasture plants were analyzed from June,6 to August,4 1985. 1. In samples of produce analyzed for nitrite nitrogen, maize had nitritenitrogen contents in the range 0.70 to 2.125ppm; sudan grass 0.15 to 2.26 ppm; fodder feet 0.471 to 6.604 ppm. 2. The nitrate nitrogen levels in these samples of maize, suden grass, fodder feet tended to decrease from 4 weeks after sowing to 10 weeks. Maize had nitrate nitrogen in the range 725.5 to 5,166.3ppm; sudan grass 449.7 to 4,421.85ppm; fodder feet 1,785 to 5,948 ppm. 3. Maize had nitrite and nitrate nitrogen contents in the range 0.52 to 3.73%; sudan grass 0.32 to 3.19%; fodder feet 1.28 to 4.29% as KNO³ on dry matter basis.