| 农林业入侵杂草五爪金龙生活史特性研究 |
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| 引用本文： | 廖宜英,林金哲,郑灿钟.农林业入侵杂草五爪金龙生活史特性研究[J].江西农业学报,2006,18(6):112-115. |
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| 作者姓名： | 廖宜英 林金哲 郑灿钟 |
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| 作者单位： | 韩山师范学院,生物系,广东,潮州,521041;韩山师范学院,生物系,广东,潮州,521041;韩山师范学院,生物系,广东,潮州,521041 |
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| 基金项目： | 广东省科技厅计划项目(2005B33302002)，韩山师范学院青年科学基金项目 |
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| 摘 要： | 对农林业入侵杂草五爪金龙的生活史特性进行了系统的研究,研究结果表明:厚实的种皮是引起种子自然发芽困难的主要原因,用浓硫酸、机械处理可以明显提高五爪金龙的种子萌发率;五爪金龙在子叶展开后不到2个月的时间便进入开花期,花期长,种群的开花时节是5~12月,完全枯萎期为次年的1月上旬到2月上旬,但此期木质化的茎仍然保持生命力,在接近1个月的休眠期后,次年2月又开始另一个生长季。
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| 关 键 词： | 五爪金龙 生活史 物候观察 种子萌发 |
| 文章编号： | 1001-8581（2006）06-0112-04 |
| 收稿时间： | 2006-08-03 |
| 修稿时间： | 2006年8月3日 |
Observation on Life History Characteristics of Invasive Weed Ipomoea cairica in Agriculture and Forestry |
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| LIAO Yi-ying,LIN Jin-zhe,ZHENG Can-zhong.Observation on Life History Characteristics of Invasive Weed Ipomoea cairica in Agriculture and Forestry[J].Acta Agriculturae Jiangxi,2006,18(6):112-115. |
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| Authors: | LIAO Yi-ying LIN Jin-zhe ZHENG Can-zhong |
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| Institution: | Department of Biology ,ttanshan Normal University in Guangdong Province, Chaozhou 521041, China |
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| Abstract: | The life history characteristics of invasive weed Ipomoea cairica in agriculture and forestry were systematically studied in this article. The results showed that the thick seed capsule was the main reason for difficult natural germination of the seed.Concentrated sulfuric acid and mechanical treatment could obviously enhance the seed germination rate.Anthesis of Ipomoea cairica started within two months after out-spread of the cotyledon and lasted for a long time(from May to December).The entire scorch phase was from the first ten days of January to the first ten days of February of next year,but the lignified stems still maintained their vitality.Through about one month's dormancy,a new growing season of Ipomoea cairica started. |
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| Keywords: | Ipomoea cairica Life history Phonology observation Seed germination |
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