The mechanism behind genotypic differences for nitrogen use efficiency in crops Characteristics of Yield and Yield Components in Conventional Indica Rice Cultivars with Different Nitrogen Use Efficiencies for Grain Output Site-specific Nitrogen Management Increases Fertilizer-nitrogen Use Efficiency in Rice Effects of Different Types of Nitrogen Fertilizer on Nitrogen Accumulation, Translocation and Nitrogen Fertilizer Utilization in Summer Maize Effects of Nitrogen Fertilizer on Nitrogen Use Efficiency and Yield of Rice under Different Soil Conditions Effects of the Amount of Basic and Tillering Nitrogen Applied on Absorption and Utilization of Nitrogen in Rice Effects of nitrogen application rate on growth and nutrient accumulation of Santalum album L. seedlings Effects of nitrogen fertilizer levels and application stages on nitrogen utilization of strip-relay-intercropping wheat in Sichuan Hilly Areas Effect of nitrogen fertilizer managements on rice yield and nitrogen uptake in medium and low yield fields under the conditions of straw turnover The appropriate mixing ratio of control-released urea and common urea in winter wheat production Effects of combined application of biological organic fertilizer and inorganic compound fertilizer on the tobacco profit and nitrogen use efficiency Optimal nitrogen application rates on rice grain yield and nitrogen use efficiency in high,  middle and low-yield paddy fields Effect of shading on nitrogen accumulation and translocation of winter wheat with different spike types using 15N tracer technique Yield and N use efficiency as influenced by real time and site specific N management in two rice cultivars Effects of nitrogen fertilization on nitrogen use efficiency and yield of machine-transplanted long–age rice seedings Effects of topdressing nitrogen and plastic film mulched ridge–sowing furrow cultivation on nitrogen utilization of winter wheat on rainfed lands in Southern Shanxi Effects of nitrogen application dates on yield and nitrogen use efficiency of summer maize in super-high yield conditions Effects of nitrogen application on yield and nitrogen use efficiency of summer maize under super-high yield conditions Variation of nitrogen use efficiency of Triticale in genotype and its evaluation Study on soil nitrogen supplying capacity and nitrogen requirements for crop under long-term rice-barley cropping system Coupling effects of water and nitrogen on dry matter accumulation, nitrogen uptake and water-nitrogen use efficiency of cotton under mulched drip irrigation Response and zinc use efficiency of Chinese cabbage under zinc fertilization Comparative study on physiological characteristics in winter wheat with different nitrogen use efficiency Effects of nitrogen on growth, root morphological traits,nitrogen uptake and utilization efficiency of maize seedlings Studies on the physiological parameters related to nitrogen use efficiency in wheat cultivars with different nitrogen utilization Effect of postponing N application on soil N supply, plant N uptake and utilization in winter wheat Preliminary Study on Physiological and Biochemical Indices Related to Nitrogen Use Efficiency in Tea Plant [Camellia sinensis (L.) O. Kuntze] Genotype Differences of Fertilizer-Nitrogen Use Efficiency in Waxy Corn Characteristics of Dry Matter Accumulation and Distribution in Conventional indica Rice Cultivars with Different Nitrogen Use Efficiency for Grain Output Main Index of Source and Sink in Nitrogen Use Efficiency for Grain Output in Conventional Indica Rice Cultivars Amount of Irrigation and Nitrogen Application for Maize Grown on Sandy Farmland in the Marginal Oasis in the Middle of Heihe River Basin Root Morphological and Physiological Characteristics in Rice Genotypes with Different N Use Efficiencies Effects of row spacing and seeding rate on radiation use efficiency and grain yield of wheat Spatiotemporal distribution characteristics of synthetic nitrogen fertilizer use efficiency in maize fields in China THE STUDY ON EFFECT OF ZEOLITE ON NITROGEN USE EFFICIENCY OF CORN BY ~(15)N-ISOTOPE DILUTION METHOD NITROGEN UPTAKE AND FERTILIZER NITROGEN USE EFFICIENCY OF WHEAT UNDER DIFFERENT SOIL WATER CONDITIONS Advances in the carbon use efficiency of forest Responses and regulation mechanisms of microbial decomposers to substrate carbon, nitro-gen, and phosphorus stoichiometry Effects of planting density on  root spatiotemporal distribution and plant nitrogen use efficiency of winter wheat. Analysis of ecosystem degradation and recovery using precipitation use efficiency and NDVI in the headwater catchment of the Yellow River basin Differential effects of nitrogen managements on nitrogen, dry matter accumulation and transportation in late-sowing winter wheat Effects of film mulching on nitrogen use efficiency of spring maize and soil available nitrogen variations in the middle reaches of Yangtze River A comparison of the effects of controlled release urea, stable urea and microorganisms increasing double rice yield and nitrogen use efficiency Effects of biochar on rice yield and nitrogen use efficiency in theNingxia Yellow River irrigation region Increase effect of biochar on cotton yield and nitrogen use efficiency under different nitrogen application levels Effects of nitrogen and density interactions on grain yield and nitrogen use efficiency of double-rice systems Effect of phosphate fertilizer on the improvement of yieldand nutrient use efficiency of soybean in wheat-soybean and wheat/maize/soybean systems Effects of partially replacement of inorganic N with organicmaterials on nitrogen efficiency of spring maize and soil inorganic nitrogen content under the same N input Modifying nitrogen fertilization ratio to increase the yield and nitrogen uptake of super japonica rice Effects of nitrogen application patterns on the dry matter accumulation and nitrogen uptake in salt-tolerant winter wheat Regulation of nitrogen application rate on temporal and spatial distribution of roots and nitrogen uptake in different N use efficiency maize cultivars Effects of Plant Sizes on the Nitrogen Use Strategy in an Annual Herb, Helianthus annuus (Sunflower) Effect of Nitrogen Application Level on Nitrogen Use Efficiency in Wheat and Soil Nitrate-N Content under Bed Planting Condition Utilization of Water and Nitrogen and Yield Formation Under Three ALimited Irrigation Schedules in Winter Wheat Fartilizer-Nitrogen Use Efficiency and Its Physiological Mechanism under Site-Specific Nitrogen Management in Rice Influence of Nitrogen Treatment on Yield and Its Relation to Leaf Photosynthesis Characteristics of Japonica Rice Variety Zhejing22 at Late Growing Stage EFFECT OF DIFFERENT NITROGEN LEVEL ON DRY MATTER ACCUMULATION AND NITROGEN UPTAKE AT REPRODUCTIVE STAGE OF INDICA RICE GENOTYPIC DIFFERENCE OF NITROGEN USE EFFICIENCY IN RICE ITS MORPHOLOGICAL AND PHYSIOLOGICAL MECHANISMS Effects of nitrogen application on nitrogen balance and use efficiency and yield of summer maize in soil with high residual nitrogen Study on Difference and Primarily Mechanism of Nitrogen UseEfficiency (NUE) in Populus nigra Seedlings Genotypes Effects of dairy effluents irrigation on yield and nitrogen use efficiency of winter wheat and soil nitrate nitrogen Effect of the interaction of nitrogen and transplanting density on the rice population structure and grain yield in low-yield paddy fields Effect of N rates on growth, development and N utilization of mechanical sowing wheat in rice-wheat cropping system in Sichuan Basin Effects of nitrogen fertilizer rates and ratios of base and topdressingfertilizer on yield, quality  of tobacco leaves and N-use efficiency Eco-physiological mechanism on nitrogen use efficiency difference of corn varieties Real maize roots in the soil and issues should be considered by study Effects of different mixture rates of coated urea and prilled urea on rice grain yield and nitrogen use efficiency Best crop management practices increase rice yield and
   nitrogen use efficiency
Relationship between photosynthetic nitrogen use efficiency and nitrogen allocation in photosynthetic apparatus of winter oilseed rape under different nitrogen levels Differences in zinc uptake and use efficiency between different aerobic rice accessions Effects of NDSA fertilization on the N uptake,yield and quality of celery Effects of low rate nitrogen application on Brassica chinensis growth and Nlosses Effects of controlled release fertilizer on rice yield and nitrogen use efficiency Study on N use efficiency of chinese cabbage and nitrate leaching under open field cultivation Genotype differences on nitrogen use efficiency among maize hybrids Difference of root physiological and ecological indices in rice cultivars with different N use efficiency In Situ monitoring of ammonia volatilization from grey desert soil under different in Xinjiang Adaptation of leaf carbon use efficiency of Larix gmelinii to environmental change Photosynthesis-nitrogen relationship in evergreen and deciduous tree species at different altitudes on Mao’er Mountain, Guangxi Effects of nitrogen management on NH3 volatilization and nitrogen use efficiency under no-tillage paddy fields