Abstract:

In order to improve the yield and shorten the growth period of Astragalus adsurgens,we collected wild Astragalus adsurgens as breeding material in FangZheng,Heilongjiang Province. Since 2001,the combination of single plant breeding and mixed selection has been used. In 2005,a good and stable strain was successfully obtained,and named the Astragalus adsurgens ‘DongNong’. Taking Astragalus adsurgens of ‘Longmu NO.2’ as a control,the variety comparison test was conducted in Harbin from 2009 to 2012. The results showed that compared with the control varieties,the hay and seed yield of Astragalus adsurgens of ‘DongNong’ increased significantly in the second and third years (No mowing in planting year);the hay yield increased by about 10%,and the seed yield increased by about 40%. In the growth period, Astragalus adsurgens of ‘DongNong’ experiencd a total of 130 days from turning green to seed mature,which wasabout 2 to 10 days earlier than the control. Therefore the Astragalus adsurgens of ‘DongNong’ has the characteristics of high yield and early maturity,and is a new excellent forage species suitable for planting in the Northeast.

Key words: Astragalus adsurgens, The comparison test, Yield, Growth period

摘要：

为了提高沙打旺的产草量并缩短其生育期，东北农业大学以黑龙江省方正县采集到的野生沙打旺为育种材料，从2001年开始利用单株选育和混合选择相结合的方法，于2005年成功获得了性状稳定遗传的优良株系，并将其命名为沙打旺‘东农’。以沙打旺‘龙牧2号’为对照，2009-2012年在哈尔滨进行品种比较试验。研究结果表明：与对照品种相比，沙打旺‘东农’的干草和种子产量在第2、3年（种植当年不刈割）明显增加，干草产量提高约10%，而种子产量提高40%左右。在生育期方面，沙打旺‘东农’从返青到种子成熟大致经历130 d，比对照提前2～10 d左右。因此，沙打旺‘东农’具有产草量高、早熟的特性，是适合在东北地区种植的优良牧草新品种。

关键词: 沙打旺‘东农’, 品比试验, 产量, 生育期