Study on fertilizer-N absorption and distribution of soybean [Glycine max (L).]during the seed-filling period Fertilizer-N Uptake and Distribution in Rice Plants Using 15N Tracer Technique Ammonia volatilization in gleyed paddy field soils of Taihu Lake region Effect of N application on fertilizer-N use efficiencies, nitrification and nitrifying microorganisms in rhizosphere soil growing with different lowland rice cultivars THE TRANSFORMATION OF UREA AND THE FATE OF FERTILIZER NITROGEN IN FLUVO-AQUIC SOIL-WINTER WHEAT SYSTEM IN FLOODED PLAIN OF HUANGHE RIVER Microbial mechanism on enhancement of inorganic fertilizer-N use efficiency for combined use of inorganic and organic fertilizers Effect of Manganese Stress on Nitrogen Accumulation of Soybean Research progress on diagnosis of nitrogen nutrition and fertilization recommendation for rice by use chlorophyll meter Effects of Wheat-Residue Application and Site-Specific Nitrogen Management on Growth and Development in Direct-Seeding Rice Site-specific Nitrogen Management Increases Fertilizer-nitrogen Use Efficiency in Rice THE EFFECT OF FERTILIZER-N APPLIED At DIFFERENT TIME TO "YALI" PEAR Effects of Wheat Residue Incorporation and Nitrogen Management Techniques on Formation of the Grain Yield of Rice