Influence of Accumulated Temperature between Sowing and Wintering on the Spike Differentiation and Growth and Photosynthesis of Two Kinds of Wheat Varieties
Abstract:The experiment uses the spring variety such as Yumai 18,Lankaoaizao 8, and the weak winter variety such as Zhoumai 18,Yumai 49 as material,which are widely sowed in Henan.Adopting the analytical method of the crops growth,for different sowing times,it takes real-time records on changes of the temperature during the wheat's development;for different ecological conditions,it systematically observes and determines the spike differentiation,population development, photosynthesis,grain filling ra...