共 2 条
- [1] Effects of varied soil nitrogen supply on Norway spruce ( Picea abies[L.] Karst.)[J] . Bettina Seith,Eckhard George,Horst Marschner,Thomas Wallenda,Christoph Schaeffer,Werner Einig,Astrid Wingler,Rüdiger Hampp.Plant and Soil . 1996 (2)
- [2] Responses of various crop species and cultivars to fertilizer application[J] . K. Mengel.Plant and Soil . 1983 (2)