15Ntracer 第1页

Utiliaztion and fate of nitrogen in greenhouse vegetable under optimized nitrogen fertilization Studies on influence of cultivation patterns on characteristics of nitrogen utilization and distribution in rice METABOLISM OF DIET UREA IN THE RUMEN in vitro BY 15NTRACER TECHNIQUE The Distribution and Use Efficiency of Nitrogen in Phyllostachys edulis Forest Nitrogen uptake and allocation characteristics of flue-cured tobacco in Nanxiong tobacco-planting area of Guangdong Province. Effects of fertilization with injection to the rhizosphere on nitrogen absorption and utilization, fruit yield and quality of apple in the Loess Plateau The dynamics of soil microbial biomass nitrogenand its biological availability