Abstract: Under high and low fertility conditions, 30main wheat varieties in different periods were selected as mate rials in Shandong Province.The difference of nitrogen absorption allocation and utilization were researched in the different wheat varieties, and the nitrogen??efficient varieties were selected. The results showed that the difference of nitrogen content of whole plant, stem??leaf, glume, and grain among the different wheat variet ies were highly significant. In two fertil??ities conditions, the max than the min increased 22.62% and 42.58%, 58.18% and 78.67%, 70.15% and 59.92%, 24.26% and 42.64%, and the nitrogen content of various organs increased with the improvement of soil fertility. Average nitrogen content of varieties in the high??fertility planted was increased by 12.47%, 30.16%, 12.26% and 5.47% than in the low??fertility.The average nitrogen distribution among varieties in two fertilities conditions: grain were 72.13% and 74??14%,stem??leaf were 21.61% and 18.70%, glame were 6.25% and 7.16%. Distribut ion of glume and grain inthe low fertility conditions increased by 14.56% and 2.79% than in the high fertility conditions, but stem??leaf decreased13??47%. By the UPGMA of Clustering, Clustered Yannong19, Lumai21, Shannong 8355 and Lumai15 four higher NUEand higher UHI varieties. And clustered Jimai20, Zimai12, Shannong12, and Hongyoubao four higher UHI varieties andXiaoyan6, Yannong15 two higher NHI varieties planted suitable for low fertility. Lumai14 and Lumai15 were higher NUE varieties.

Key words: Wheat variet ies, Nitrogen, Absorpt ion, Ut ilization efficiency, Classification

CLC Number: 

• S512.1