| 王鹤龄,牛俊义,孙万仓,杨瑞吉,曾秀存,盖玥.不同生态区8种芸芥根系生物量的初步研究[J].干旱地区农业研究,2005,(5):41~45 |
| 不同生态区8种芸芥根系生物量的初步研究 |
| Study on root system biomass of different ecotypes of Eruca Sativa Mill |
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| DOI：10.7606/j.issn.1000-7601.2005.05.08 |
| 中文关键词: 芸芥 根系 生物量 分布 |
| 英文关键词:Eruca Sativa Mill root system root system biomass distribution |
| 基金项目:甘肃省自然科学基金项目资助(ZS991-A21-043-N) |
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| 中文摘要: |
| 通过管栽模拟试验,研究了不同生态区8个芸芥类型(高抗旱类型的会宁芸芥、陇西芸芥,中抗旱类型的张北芸芥、Varomin芸芥、兴和芸芥、和田芸芥,低抗旱类型的西凉芸芥、四川芸芥)的根系生长情况。结果表明:芸芥根系生物量的垂直层次分布模型可用多项式y=a+bx+cx2+dx3描述;会宁、陇西、兴和、西凉芸芥与张北、和田、Varomin、四川芸芥的各参数值(a、b、c、d)总体相差较大且根系总生物量、各层次的生物量和根/冠比前者均低于后者;各层次根系生物量的百分含量也呈现不同的垂直变化规律。无论是总的还是各层次的根系生物量,强抗旱芸芥类型的趋于中等大小,中抗芸芥类型的有大也有小,低抗芸芥类型的均较大。 |
| 英文摘要: |
| By using pipe cultivation experiment, eight ecotypes of Eruca Sativa Mill from different regions (high drought-resistant types: Huining, Longxi; medium drought-resistant types: Xinghe, Zhangbei, Hetian, Varomin; low drought-resistant types: Sichuan, Xiliang) were selected to study their characters of root growth and distribution. The results indicated that the vertical distribution of root biomass was simulated by the equation of y=a+bx+cx2+dx3. All equation parameters (a, b, c and d) of Huining, Longxi, Xinghe and Xiliang were clearly different with Zhangbei, Hetian, Varomin and Sichuan, and the root system biomass and root/shoot ratio of the former types were lower than the latter ones. The vertical distribution of root system biomass in various layers show different diversification rules. The materials of high drought resistance had a medial root system biomass; the materials of medium drought resistance had a large or small root system biomass; and the materials of low drought resistance had a large root system biomass than others. |
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