Polymorphic Characteristics and Origin Analysis of Wild Alfalfa Population(Medicago sative L.) in Deqin Area Population characteristics of super-high-yielding wheat under rice stubble in Huanghuai area Population Characteristics and Conservation of Cycas fairylakea Population Structure and Dynamic Analysis of the Rare and Endangered Plant Camellia longistyla Studies on the characteristics of Michelia odora po pulation and its community in south central Jiangxi Effect of Grazing Intensity on Population Characteristics and Community Diversity of Seriphidium transiliense Responses of Nitraria sphaerocarpa Maxim. population to disturbance of blown sand in the edge of Desert Oasis Difference in Yield and Population Characteristics of Different Types of Late Rice Cultivars in Double-cropping Rice Area Clonal Architecture and Ramet Population Characteristics of Leymus chinensis from Different Habitats in the Xilin River Watershed Analysis on Population Characteristics and Yield Formation Advantages of Pot-seedling Mechanical Transplanting Middle-season Indica Hybrid Rice Yield Components and Population Characteristics of Super-High-Yielding Late Japonica Hybrid Rice in Double-Cropping Rice Area Population Characteristics for Super-High Yielding Hybrid Rice Yongyou 12 (>13.5 t ha-1) Population characteristics of Coptis chinensis varbrevisepala in Anhui Province and its endangering mechanism Clonal architecture and ramet population characteristics of Lysimachia congestiflora growing under different light conditions Ramet population characteristics and biomass allocation of Eremosparton songoricum growing under different water conditions