| 河西盐渍化沙地沙打旺引种栽培试验 |
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| 引用本文： | 喻文虎,豆卫,韩天虎,向金城.河西盐渍化沙地沙打旺引种栽培试验[J].草原与草坪,2007(5):46-48,53. |
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| 作者姓名： | 喻文虎 豆卫 韩天虎 向金城 |
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| 作者单位： | 甘肃省草原技术推广总站,甘肃,兰州,730046 |
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| 摘 要： | 通过田间试验表明:沙打旺生育期177 d,从第2年开始能收少量种子;沙打旺由于花期长,种子成熟不一致,应适时收种;第1年有少量分枝,第2年分枝数12.6,第3年分枝数22.3;产草量高,第2年产草量22 000 kg/hm2,第3年产草量3 8000 kg/hm2,宜在花期以前刈割利用;沙打旺再生能力比苜蓿弱,二茬草高度只有46 cm;沙打旺根系发达,抗旱、抗寒、耐瘠薄、竞争力强,能形成单一郁闭群落。沙打旺为中等耐盐植物,耕作层土壤含盐量在0.655%以下时,植株生长正常,达到0.836%时,植株生长受到抑制,达到0.96%时,种子不能发芽。
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| 关 键 词： | 沙打旺 产草量 茎叶比 青干比 耐盐性 |
| 文章编号： | 1009-5500（2007）05-0046-04 |
| 收稿时间： | 2006-08-30 |
| 修稿时间： | 2006-08-302006-10-12 |
Experiment for introducing Astragalus adsurgens in saline sand soil in Hexi Corridor |
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| YU WEN-hu,DOU Wei,HAN Tian-hu,XIANG Jin-cheng.Experiment for introducing Astragalus adsurgens in saline sand soil in Hexi Corridor[J].Grassland and Turf,2007(5):46-48,53. |
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| Authors: | YU WEN-hu DOU Wei HAN Tian-hu XIANG Jin-cheng |
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| Institution: | Grassland Technique Extension Station of Gansu Province , Lanzhou 730046, China |
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| Abstract: | The results from field experiment showed that the flowering period of Astagalus adsurgens was as long as ded 177 days for seed ripening and a few seeds could be harvest in the second year.The branch number n the first year was few and it was 12.6 and 22.3 per plant in the second and third years respectively.The grass yield was 22 000 kg/hm2 in the second year and 38 000 kg/hm2 in the third year The proper harvest time was before the flowering stage.The height of regrowed plant was only 46 cm.Astragalus adsurgens had a deep and strong root system.It could normally grow in the soil with less than 0.655% of salt.However,while the salt content was up to 0.836%,its growth would be restrained.And its seeds could not germinate if the salt content was over 0.96%. |
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| Keywords: | Astragalus adsurgens grass yield ratio of stem to leaf ratio of fresh matter to dry matter salt tolerance |
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