Study on the Growth and Development Regularity of Winter and Spring Highland Barley
To understand the growth and development patterns and differences between winter and spring barley,predict the growth and development process of winter and spring barley,and provide data support for barley breeding,high-yield cultivation,and regional yield prediction,In this study,winter and spring highland barley varieties"Dongqing 18"and"Zangqing 3000",which are mainly promoted in Xizang,were taken as the re-search objects to study the changes of leaf area index,root number per plant,average root length per plant,total root length per plant,biomass accu-mulation and distribution and other indicators during the key growth period of winter and spring highland barley,and systematically study the growth and development of highland barley.The results showed that the growth period of winter barley was much higher than that of spring barley,and and the leaf area index of spring barley at each growth period was higher than that of winter barley.Winter barley can form more developed root systems than spring barley.The dry and fresh biomass of winter barley during various growth stages are higher than that of spring barley.