Study on the Effect of Different Water-retention Materials on Survival Rate and Growth of Plantation Afforested on Sandy Land of Yanchi County Research on the Adaptability of Several Newly Introdued Plants Grown on Sandy Land of Yanchi County of Ningxia A Discuss on Relationship between Soil Water Contents and Vegetation Recovery on Yanchi Sandy Land Study on Forest Type/Tree Species Structure Optimization of Yanchi Sandy Area Eco-economical Shelterbelt System in Ningxia The Effect of Pruning on Plucking Scion of Mother Plant of Acacia Species Constitution and Spatiotemporal Expression of Starch Branching Enzyme in Developing Wheat Grain Phylogenetics of early branching eudicots: comparing phylogenetic signal across plastid introns, spacers, and genes Response mechanisms of a county territory agro-pastoral system to climate fluctuations in an agro-pastoral transitional zone Optimizing Deactivation and Drying Process for Pleurotus eryngii Chip Studies on Fertilization of Young Acer truncatum Bunge Ⅰ. Effect of Various Nutrition Supply Conditions on Growth and Morphology of Acer truncatum Bunge Psammophyte Resource Investigation of Qingshan Village,Yanchi County