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Position Study of the Relations between Vegetation Degeneration and Annual Rainfall in the Sand Region of Minqinxian County Comparison of Soil Desiccations in Natural and Acacia Forests in the Ziwuling Mountain of the Loess Plateau Biochemical Markers and Microspore Cytochrome Oxidase of the Male Sterile Line of NIAN-type Wheat Chromosomal Positioning of the Genes of Water Use Efficiency and Concerned Physiological Traits in Wheat Leaves Conditions of Dynamic Adsorption in Purifying Cornus officinalis Saposins with Macro- Porous Resins Components of the Essential Oil in Isodon henryi (Hemsl.) Kudo The application and influence of biotechnology in forestry Effects of solution of extracts from Nostoc commune on vegetative growth and flowering of some garden plants Effect of different human-caused disturbances on above-ground biomass and productivity of Pinus massoniana forests Mathematical models of multiple objective analytics for sustaining utilization water resources in inland river valley Effect of carmine spider mite on enzymes related to active oxygen metabolism in cowpea seedling leaves Directional selection of techniques applied to vegetation construction Effect of soil drought stress on osmotic adjustment ability of maple leaves Effects of soil water stress on contents of chlorophyll,soluble sugar,starch,C/N of two desert plants (Cynanchum komarovii and Glycyrrhiza uralensis) Progress of sex determination in plants Introduction of sweet-tasting protein thaumatin gene into tobacco through Agrobacterium-mediated system Responses of contents of soil nutrient factors and water to stocking rates for yaks in Kobresia parva alpine meadow Ⅰresponses to contents of soil nutrient factors and water to stocking rates in summer pasture Comparative morphology,ecology and geographical distribution of Calophaca sinica and C.soongorica Morphological and cytological observations on interspecific hybridization F1 from Cucumis sativus×C.hystrix Study of salt-soluble globulin from black soya (Semen glycine) DNA extraction on three different materials of Larix chinensis Research on change of soil properities of Caragana plantation in North-west of Shanxi Province Numerical analysis of interspecific relationships in communities of Larix chinensis in Qinling Mountain A study on interspecific association of principal tree species in the communities including Quercus variabilis on the Qinling and Bashan Mt. Change of soil organic matter and water holding ability during vegetation succession in Ziwuling region Study on plant moisture stress of Sophora viciifolia in the Loess Area North of Shaanxi province Study on soils water storage capacity and availability in secondary vegetation types in Ziwuling forest region Changes of soil C,N and soil water under conversion of cropland into grassland Nitrate distribution characteristics in soil at fertilization on cucumber at sunlight greenhouse in Loess Plateau Sustainable utilization of grassland resources in west segment of Qilian Mountains and Jiuquan Basin Characteristics of the soil seed bank and the seedling bank in fenced sandy meadow Preliminary study on B-chromosomes of Lilium davidii var.unicolor A study on bryophyte associated with formation of soil crust in south fringe of Gurbantunggut Desert in Xinjiang Studies on the cultivation and morphological and cytological identification of wheat-Elytrigia intermedium alien disomic addition lines Isolation and characterization of reactive oxygen species-insensitive mutants in Arabidopsis thaliana Studies on heterosis of vernal hybrid F_1 of male sterile lines of Ven & K Typeal wheat and their relationship with chlorophyll content and zymogram of isoenzyme Effect of water stress on mesophyll cells and the number of stomata of spring wheat growing in semi arid region A research on the photosynthetic characteristics of Jinguan,Molios and Strimoson apple (Malus pumila Mill.) Thechanges of the HMW glutenin subunits of introducingsorghum DNA into spring wheat Characteristics of various repeated DNA sequences in higher plants A karyomorphological study on 5 species of Swertia (Gentianaceae) Thetransmission characteristics of E chromosome in VE161 wheat RELATIONSHIP BETWEEN SHOOT APEX AND INFLORESCENCE DEVELOPMENT AND PEROXIDASE CHANGES IN GARLIC ( ALLIUM SATIVUM L.) THE INVESTIGATION OF INCREASING WHEAT NULLISOMIC FERTILITY USED THE ENHANCING FERTILITY GENES ON MICROCHROMOSOMES THE EFFECT OF MERCURY ON MEMBRANE-LIPID PEROXIDATION AND ENDOGENOUS PROTECTIVE SYSTEM IN MAIZE SEEDLING STUDIES ON THE VOLATILE OIL OF LEONTOPODIUM HAPLOPHYLLOIDES ON SUBALPINE DISTRICT WATER USE EFFICIENCY OF C_3 AND C_4 PLANTS CHANGES OF SOME ISOENZYMES IN SALT -TOLERANT CELL LINE OF SETARIA ITALICA AND THE EFFECTS OF EXTERNAL ABA ON THEM 陕西渭北旱塬土壤－植物－大气连续体中水分运转规律的研究──Ⅰ．生态环境对植物叶温的影响 Advances in studies on chemical constituents from husks of Xanthoceras sorbifolia and their biological activities Determination of 20(R)-25-OH-PPT in different parts of species in Panax Linn. by HPLC-ELSD methods Research progress on evaluation methods of mouthfeel of oral drug delivery system AFLP Analysis on genetic diversity for germplasm resources of Fritillaria thunbergii cultivated in Zhejiang Province Spatiotemporal Heterogeneity of Soil Water Content at Different Size of Gaps of Pinus koraiensis-Dominated Broadleaved Mixed Forest Biological Characteristics of Storage Pest Plodia interpunctella of Masson Pine Pollen Analysis on Insecticidal Activity of Bt Transgenic Populus deltoides × P. euramericana cv‘Nanlin895’and Its Effects on Soil Microorganism Research on the Development of Ligule and Velum in Isoetes sinensis Palmer Ovule Development and Seed Formation of Calanthe tsoongiana T.Tang et F.T.Wang Biomass and Productivity of Strified Mixed Stands of Pinus massoniana and Cinnamomum cassia Growth Effects of CO₂ Concentration and Phosphorus on Maize and Soybean under Different Cropping Patterns Distribution of Organic Carbon and Aggregation of Calcareous Soil in Different Forest Types Effect of Storage Phosphorus in Soybean Seeds on the Tolerance to Low Phosphorus Stress at Seedlings Stage Photosynthetic Characteristics of Limonium bicolor under Salt Stress Bryophytes Diversity and Flora in the Southern Greater Khingan Mountains Somatic Embryogenesis and Plant Regeneration from Mature Embryo Explants in Quercus acutissima Carr. Influence of Vitrifying Cryopreservation Conditions on Cell Viability and Ultrastructure of Cercidiphyllum japonicum Normal Buds Effects of Aluminum Stress on Membrane Lipid Peroxidation and Antioxidant Enzyme Activities in Black Soybean Effects of Nitrogen-limited Culture on Water Content and Chlorophyll Fluorescence Parameters in Chlorella sorokiniana Effect of Introducing Biennial Legume Species,Melilotus officinalis,on Plant Community in the Early Stage of Vegetation Succession and Soil Nutrients in the Semiarid Loess Plateau of China Effect of the Extracts of Rhizosphere Soil from Stipa bungeana on the Germination of Stipa bungeana and Its Dominant Species Physiological Adaptation of Oligostachyum lubricum under Water Stress Progress of Salt Tolerance Study in Wild Soybean Extraction and Identification of Anthocyanins from Brown Cotton Spatial Distribution of Arbuscular Mycorrhizal Fungi,Soil Factors and Glomalin in the Rhizosphere of Amorpha fruticosa Grown on the Loess Plateau Phytoremediation of Four Plant Species in ¹³³Cs and ⁸⁸Sr Contaminated Soil Observation of Pigment in Purple Pepper and Extraction System Optimization of Leaf Purple Pigment Effects of the Growth Habitat on the Content of Soluable Protein in Aromatic Rice Grains Morphology and Histochemistry of the Glandular Trichomes of Isodon rubescens (Hemsley) H. Hara [Lamiaceae] Effects of Water Extract of Two Weeds on Seed Germination and Seedling Growth of Different Wheat Varieties Oxalic Acid-induced H2O2 Production and Resistance to Downy Mildew in Cucumber Seedlings