24个沙枣品种选繁试验研究

沙枣在河西走廊广泛栽培，多年来由于品种机械、生物学混杂及生境条件与栽培方法差异，造成品种严重退化。为进一步探索提高沙枣品种质量，选繁优良品种，开发综合利用价值，我们从沙枣的主要产区广泛收集沙枣品种资源，从原种的果实质量及容器育苗培育的高生长、地径、根系生长、生物产量等指标分析，结果表明代号为9、24、17、5号等品种表现良好。初步选定果肉经济型沙枣7个、抗逆速生型沙枣9个、二者兼备型沙枣5个品种为优良品种。本试验为定向培育经营提供沙枣种源依据。

Selection and Propagation of 24 Varieties of Elaeagnus angustifolia Linn.

Elaeagnus angustifolia Linn. is widely cultivated in Hexi Corridor of Gansu province. At present, the varieties of Elaeagnus angustifolia Linn. have seriously degenerated because of many factors, such as miscellaneous biology, different habitat and various cultivating methods and so on during its long cultivation history. For further improving the variety＇s quality, selecting and propagating fine variety and developing its comprehensive utilization value, the variety resources of Elaeagnus angustifolia Linn. were collected from its main cultivation areas. At the same time, the measurement and analysis were made to the fruit quality of original tree species and the indices （tree height, diameter of breast height, length of root, yield of biomass etc.） of container seedling of Elaeagnus angustifolia Linn.. The result indicated： the varieties of No.9, 24, 17 and 5 had better performance. Among them, 7 were the types of flesh and economic usage, 9 were the types of stress resistance and fast-growth, and 3 were the types with the both types＇ traits above. The trial could be provenance basis for Elaeagnus angustifolia Linn. directive breeding and management.