Characteristics of sink-source-flow in “II Youhang No. 1” and “II Youhang No. 2” super hybrid rice Research and prospect on physio-ecological properties of ratoon rice yield formation and its key cultivation technology Suitability evaluation of eco-climatic conditions for high quality rice production in Sichuan Province Impact of weather on vegetable price resilience— A case study of the local cucumber in Shijiazhuang City The Influencing Factors to Dry Land Rice Production in Salinized and Easily Waterlogged Lowland--A case study from Qiwanmu of Nanpi County,Hebei Province Effects of returning wheat straw to farmland and irrigation pattern on grain setting traits and quality of super rice Population biological characteristics and yield of early rice of throwing transplanting under seedling-increase and nitrogen-reduction measures Effect of low temperature stress on physiological characteristics of flag leaf and its relationship with grain yield during panicle primordium differentiation stage of early rice Physiological response of seedling of “Liangyoupeijiu” and its parents to nitrogen nutrient