关键词: 阴山北麓, 雨养条件, 春小麦, 产量, 品质

Abstract: Using some spring wheat varieties from Inner Mongolia,Heilongjiang,and Gansu as experimental materials,we study the agronomic traits,grain yield,yield components and grain quality characteristics of different spring wheat varieties under the rain-fed conditions in the north foot of Yinshan mountain.The results showed that in terms of grain yield,the yield of L1553 and TKGLN varieties were the highest.On further analysis,the contribution rate of spike number per acre was the largest at 1.030,followed by the number of grains per spike with a contribution rate of 0.440,and the smallest was 1000-grain weight with a contribution rate of 0.360.From the characteristics of grain quality,the grain protein content and wet gluten content of varieties NM2 and NM4 were significantly higher than those of other cultivars.The correlation analysis showed that the grain yield was significantly negatively correlated with protein content and wet gluten content.To sum up,under the rain-fed conditions in the north foot of Yinshan mountain,there is a high yield potential in the varieties of L1553 and TKGLN,while the NM2 and NM4 varieties have stable and strong gluten quality.The area of high yield and strong gluten wheat breeding and cultivation measures should be paid more attention to in the coordination of relations between yield and quality traits,such as protein content and wet gluten content.More attention should also be paid to improving both the number of panicles and the 1000-grain weight at the same time,in order to give full play to the production and quality characteristics of spring wheat varieties.

Key words: North foot of Yinshan mountain, Rain-fed conditions, Spring wheat, Yield, Quality