黄土台塬小麦品种改进与发展问题之探讨

Discussion on the Problem of Development and Improvement of Wheat Varieties on the Loess Tableland Area

以黄土台塬典型区乾县北原、永寿等县40多年小麦品种生产资料为主,结合枣子沟流域1986～1992年品种试验示范结果,利用品种平均比率和生产指数分析该区小麦品种改进作用,达23.21％。根据品种演变规律分析品种生态型模式,提出了新品种选育和两高一优栽培技术开发应走集团品种的发展路子。

Based on the information of wheat production for more than 40 years in thetypical loess tableland area including the north highland of Qianxian county,Yongshao coun-ty in close connection with test and demonstration results in the years of 1986—1992 in Za-ozigou watershed,wheat variety improvement was analysed using average rate and produc-tion indexes,reaching 23. 21%. Also, this paper suggests the selection of new varieties andcultivation techniques of two highs and one fine in accordance with the analysis of varietyecological patterns from variety evoluations. Technical development should take up the roadof group population varieties.