| 伊犁绢蒿年际结实量、土壤种子库及幼苗输入特征 |
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| 引用本文： | 鲁为华,任爱天,杨洁晶,靳瑰丽.伊犁绢蒿年际结实量、土壤种子库及幼苗输入特征[J].草业科学,2013,30(3):390-396. |
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| 作者姓名： | 鲁为华 任爱天 杨洁晶 靳瑰丽 |
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| 作者单位： | 石河子大学动物科技学院,新疆 石河子,832003;新疆农业大学草业与环境科学学院,新疆,乌鲁木齐830052 |
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| 基金项目： | 石河子大学自然科学与技术创新项目，新疆草地资源与生态重点实验室开放课题 |
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| 摘 要： | 连续3年对伊犁绢蒿（Seriphidium transiliense）种子结实量和萌发行为进行了测定，并对土壤种子库和幼苗输入特征进行了分析。结果表明，种子结实量主要受围栏和年度气候条件两因素的影响，围栏内种子产量明显高于围栏外，年际间种子产量的变动更为剧烈，表现为2007＞2009＞2008年。伊犁绢蒿单株种子产量对围栏和年度气候条件两因素的响应都极为敏感，在围栏内外和年度间均表现为差异极显著（P<0.01），但结实模式未发生明显变化。围栏内外种子萌发率存在显著差异（P<0.05），但年度间差异不显著（P>0.05）；土壤种子库内可萌发种子数在年度和围栏内外均变化剧烈，均存在极显著差异（P<0.01）；围栏内春季新生幼苗数量多于围栏外，新生幼苗数量在年度间差异不显著；幼苗存活数量不论在围栏内外还是在年度间都比较少，但围栏能够显著提高幼苗存活率。伊犁绢蒿从结实、种子库、幼苗发生到存活各阶段的转化率均比较低，在整个生活史过程中表现出明显的r对策。
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| 关 键 词： | 伊犁绢蒿 结实量 土壤种子库 转化率 |
Study on character of annual seeds yield, soil seed bank and seedling recruitment of Seriphidium transiliense |
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| LU Wei-hua,REN Ai-tian,YANG Jie-jing,JIN Gui-li.Study on character of annual seeds yield, soil seed bank and seedling recruitment of Seriphidium transiliense[J].Pratacultural Science,2013,30(3):390-396. |
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| Authors: | LU Wei-hua REN Ai-tian YANG Jie-jing JIN Gui-li |
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| Institution: | 1.The College of Animal Technology & Science,Shihezi University.Shihezi,Xinjiang 832003,China 2.College of Pratacultural and Environmental Science,Xinjiang Agricultural University,Urumqi 830052,China) |
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| Abstract: | Seriphidium transililense seeds yield was observed for three years (2007－2009), and the character of soil seed bank and seedlings recruitments were analyzed. The result showed that fence and climate affected seed yield of seeds. Seed yield inside fence is higher than outside fence significantly, and fluctuating of seed yield is more acutely in different years because of climate change, and shows 2007>2009>2008. Seed yield and weight of single S.transililense seedling are very sensitive to fence and climate change, and have significant difference inside, outside fence and in different years（P<0.01）, the seed mode does not change significantly. The seed germination rate has significant difference（P<0.01）, but there is no difference between years（P>0.05）. The germinable seeds of soil seed bank have dramatic changes and have significant differences in the annual and fences inside and outside, seedlings emergence quantity inside fence is larger than outside, but there is no significant difference in three years. The survival rate of seedlings is very low in three years and inside, outside the fence, but fences can significantly increase seedling survival rate. The conversion rate of every stage is relatively low from seed, soil seed bank, seedlings to seedling recruitment, the life story of S. transililense showed significant r strategy. |
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| Keywords: | Seriphidium transililense seeds yield soil seed bank conversion rate from seeds to seedling |
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