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An approach to the screening index for low nitrogen tolerant wheat genotype The difference of nitrogen uptake and utilization in waxy corn II.The genotypic differences in accumulation dynamics of nitrogen Genotypic variation in nitrogen use efficiency in summer maize Effects of medium pH and N forms on aerenchyma formation in roots of different rice genotypes Potassium efficiency of various cotton genotypes and its nutritional mechanisms Change characteristics of organic acid and amino acid in root exudates in different grain amaranth genotypes The genotypic difference of potassium nutrition of flue-cured tobacco Genotypic difference of maize lateral roots in response to local nitrate supply Genotypic difference in Zn- uptake and translocation at rice seedlings under different Zn2+ activity Study on resistance to iron deficiency in peanut cultivars and physiological traits Screening grain amaeanths for genotypes of the capability of enrichment in potassium The studies on the karyotype diversity of 4 species of Liliaceae in Ziwu Mountain Karyotypes and evolution of five species of Leymus Hochst. A STUDY ON THE DEVELOPMENT WITH DROUGHT RESISTANCE OF WHEAT VARIETY THROUGH CROSSES BETWEEN OCTOPLOID TRITIELYTRIGIA TYPES AND TRITICUM AESTIVUM STUDIES OF THE KARYOTYPE AND EVOLUTION FOR THREE ENDEMIC SPECIES OF RANUNCULACEAE IN QINGHAI XIZANG PLATEAU Features of grassland resources and their classified management in Alatai region of Xinjiang Diversity of Frankia in nodules of Alnus nepalensis at Gaoligong mountains revealed by IGS PCR-RFLP analysis Patch size distribution pattern and its hierarchical effect of main landscape types in the Wuyishan scenery district Comparison of roots distribution in different maize plant type cultivars in the Songnen Plain The relation between the change of NDVI of the main vegetational types and the clim′atic factors in the northeast of China Viewpoints on the study of economic thresholds of cotton bollworm The climatic suitable ecotopes in China for introduction of almond An experimental research on soil erosion and nitrogen loss under different vegetation cover The comparison of photosynthetic physiological characteristics between the two divergent Aneurolepidium chinense types STUDY ON THE WATER CONSUMPTION LAW OF COMPLEX CROP SYSTEMS IN THE TABLELANDS OF THE EASTERN GANSU LOESS PLATEAU PRINCIPAL COMPONENT ANALYSIS AND FUZZY CLUSTER ANALYSIS FOR DIFFERENT ECOTYPES OF REED(PHRAGMITE SCOMMUNIS TRIN)BASAD ON THEIR INDEXES PRELIMINARY STUDY ON THE LANDSCAPE ECOTYPE CLASSIFICATION IN MAOWUSU SANDLAND AND THE BIODIVERSITY OF ITS SHRUB COMMMITIES ARRANGEMENT OF EAST-ASIAN VEGETATION-CLIMATE TYPES ON COORDINATES OF TEMPERATURE AND PRECIPITATION NATOMICAL STUDIES ON THE PRIMARY VASCULAR SYSTEM OF THE SEEDLING OF BRASSICA PEKINENSIS RUPR STUDIES ON THE CYTOLOGY OF ATRACTYLODES DC. IN THE NORTH-EAST OF CHINA THE ENTROPY STRUCTURE OF BIODIVERSITY DISCOVERY AND UTILITY OF BIOTYPE OF WHEAT Ⅰ. ORIGIN AND UTILITY OF THE BIOTYPE OF LONGMAI 15 WITH HMW GLUTENIN SUBUNITS 5+10 BIOSYSTEMATICAL STUCIES ON VICIA L. IN NORTHEAST CHINA Ⅶ KARYOTYPE ANALYSIS ON V.UNIJUCA AND ITS ALLIED SPECIES A PRELIMINARY CYTOTAXONOMICAL STUDY ON THE CHINESE ARISTOLOCHIA(ARISTOLOCHIACEAE) CYTOTAXONOMICAL STUDIES ON BUPLEURUM L. IN NORTHEAST CHINA Ⅰ. KARYOLOGY ANALYSIS OF SIX TAXA AND THEIR SIGNIFICANCE OF TAXONOMY STUDY ON THE GEOGRAPHY OF AQUATIC PLANTS IN NORTHEAST CHINA STUDY ON COMPARISON OF KARYOTYPES BETWEEN SYNAPTONEMAL COMPLEX AND CHROMOSOME IN RYE (Secale cereale L.) BIOSYSTEMATICAL STUDIES ON NORTHEAST CHINA VICIA L.Ⅲ.PRELIMINARY CYTOLOGICAL OBSERVATIONS ON VICIA CRACCA GROUP Haplotype analysis of Bemisia tabaci biotype Q in Jiangsu Province, China Genetic analysis of Zn-efficient nutrition characteristic of rice at different Zn2+ activities Genotypic differences and physiological characteristics of calcium uptake and accumulation of pepper(Capsicum frutescens) Differences of aluminum tolerance on wheat genotypes and its screening techniques THE DIVERSITY OF DOMINANT SOYBEAN RHIZOBIUM TYPE IN CHINESE SOILS AND ITS SYMBIOTIC CHARACTERISTIC WTIH HOST EFFECT OF NITROGEN FORMS AND HCO3-ON IRON NUTRITION OF PEA Characteristic of growth and development of maize inbreds with different phosphorus efficiency under low-P stress Response of photosynthetic characteristics to Mn nutrition in soybean seedling STUDY ON TYPES OF WATER STRESS ADAPTATION IN BOTH BRASSICA NAPUS L. AND BRASSICA JUNCEA L. LEAF AGE AND THE CAM ACTIVITY IN SEDUM SPECTABILE CHROMOSOME OBSERVATION OF SOME DRUG PLANTS IN XINJIANG THE FLORA OF XYLOPHYTA IN HENAN KARYOTYPE ANALYSIS OF SOME OIL PLANTS CHROMOSOME OBSERCATION OF 20 SPECIES DRUG PLANTS IN XINJIANG THE KARYOTYPE ANALYSIS OF HELLEBORUS THIBETANUS FRANCH Effects of temperature on Keratella quadrata life table demography and morphometric characteristics. Soil heavy metals concentration in different type plantations in Harbin City. Variation analysis on the grain yield and main agronomic traits of spring wheat in rainfed regions of China. Remote sensing based monitoring of vegetation dynamics and ecological restoration in Beijing mountainous area. Total flavonoids and icariin contents of Epimedium pubescens in different types of communities and their relationships with soil factors. Coupling situation of agriculture-ecology-economic system in Zhifanggou Watershed of Loess hilly and gully region. The evolution between ecological security pattern and agricultural productive force in Manas River Basin for the past 30 years A comparative analysis of the hydrological effects of the four cypress stand types in Sichuan Basin Currentprogress in plant ideotype research of dryland wheat (Triticum aestivum L.) Advances in plant seed-associated microbial ecology Influence of vegetation on frozen ground temperatures the forested area in the Da Xing‘anling Mountains, Northeastern China Volatile oil contents correlate with geographical distribution patterns of the miao ethnic herb Fructus Cinnamomi Comprehensive assessment of urban ecological risks: the case of Huaibei City Effect of UV\|B radiation on biological characteristics of two body color biotypes of Sitobion avenae (Fab.) offspring Seed Germination and Seedling Recruitment of Cupressus funebris in the Three Gorges Area，China A Cytotaxonomic Study of Drymotaenium miyoshianum Makino Analysis of Karyotype of Catharanthus roseus (Apocynaceae) The Karyotype Analysis of Calanthe triplicata Characteristics of Main Vegetation Types in Jinzhongshan Nature Reserve, Guangxi Province Anatomical Features and Stomatal Gas Exchange in Leaves of Melastoma candidum Grown in Hilly and Swampy Habitats An Introduction to Main Vegetation Types in the Baishanzu National Nature Reserve Chromosome of Root Tip Cells in F_5 Plants Derived from Asymmetric Somatic Hybrids between Triticum aestivum and Agropyron elongatum Karyotype Analysis of Cycas debaoensis The Karyotypes of Four Dunaliella Species (Algae) FLORISTIC CHARACTERS OF THE FORMATION DACRYDIUM PIERREI/SYZYGIUM ARAIOCLADUM IN TROPICAL MONTANE RAIN FOREST IN BAWANGLING NATURE RESERVE, HAINAN ISLAND THE TYPES AND MECHANISM OF FLUCTUATION IN PLANT COMMUNITY KARYOTYPE ANALYSIS OF CYCAS CHANGJIANGENSIS