玉米新品种适应性“四级梯次鉴定体系”的建立与应用

The Establishment and Application of New Maize Variety Adaptability of Four Echelon Identification System

玉米是我国的主要作物,在粮食及饲料作物生产中占有重要地位。我国玉米单产的提高,35%~40%归功于品种。针对当前选育的玉米新品种适应性差的现状,建立并完善了玉米新品种适应性"四级梯次鉴定体系"。该体系主要包括新组合初级鉴定、中级联合鉴定、高级联合鉴定和生产鉴定4个相互关联并梯次递进的阶段。应用此方法能够对玉米新组合的适应性和产量等主要生物学及经济学性状进行全面鉴定、评价与选择,加快培育适应性广的优良玉米品种步伐,为农业增产、农民增收服务。

Maize is the main crop in China, which plays an important role in the production of food and feed crops. 35%-40% increasing of maize yield in China is due to variety. New maize variety adaptability of Four Echelon Identification System was established and improved in view of the current situation of poor adaptability of new maize varieties. The system mainly includes the new combination primary identification, intermediate joint identification, senior united identification and production identification of four interconnected and arrangement in progressive stage. This method can be used to identify, evaluate and select the main biological and economic characters of new maize combinations, and accelerate the cultivation of a wide range of adaptability of excellent maize varieties, then provide services for the agricultural production and increasing of farmers＇ income.