| 应用根系生态位指数研究不同灌溉量棉花根系分布特征 |
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| 引用本文： | 刘凤山,周智彬,陈秀龙,甘永德.应用根系生态位指数研究不同灌溉量棉花根系分布特征[J].棉花学报,2011,23(1):39-43. |
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| 作者姓名： | 刘凤山 周智彬 陈秀龙 甘永德 |
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| 作者单位： | 1. 中国科学院新疆生态与地理研究所,乌鲁木齐,830011;中国科学院研究生院,北京,100039
2. 中国科学院新疆生态与地理研究所,乌鲁木齐,830011 |
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| 基金项目： | 国家重点基础研究发展计划(2009CB421302); 中科院“西部之光”人才计划“联合学者”(HXZ200801); 新疆维吾尔自治区科技攻关重大专项(200731137-3) |
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| 摘 要： | 利用根系生态位指数（root ecological niche index , RENI）研究膜下滴灌不同灌溉量下棉花根系分布特征，并将RENI与根系各参数（根干重、根长、根体积、根表面积）相比较，为描述根系分布提供更准确的参数。试验结果表明：（1）RENI与根系各参数有良好的相关性（r2>95%），可以反映棉花根系的分布。灌溉量较少情况下，根体积对RENI的贡献率最大，根干重贡献率最小；充分灌溉条件下，根体积对RENI的贡献率最小，根干重最大。（2）RENI在土壤中呈偏正态分布，0～40 cm土层的RENI占总RENI的86.8%。（3）膜间裸地的根系分布主要受棉花生物学因素的影响，距离棉株越近，根系分布越多。
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| 关 键 词： | 生态位指数 膜下滴灌 根系分布 棉花 灌溉量 |
| 收稿时间： | 2010-03-26; |
Using RENI to Study the Distribution Characteristics of Cotton Roots in Different Amounts of Drip Irrigation under Film |
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| LIU Feng-shan,ZHOU Zhi-bin,CHEN Xiu-long,GAN Yong-de.Using RENI to Study the Distribution Characteristics of Cotton Roots in Different Amounts of Drip Irrigation under Film[J].Cotton Science,2011,23(1):39-43. |
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| Authors: | LIU Feng-shan ZHOU Zhi-bin CHEN Xiu-long GAN Yong-de |
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| Institution: | LIU Feng-shan1,2,ZHOU Zhi-bin1,CHEN Xiu-long1,GAN Yong-de1,2(1.Xinjiang Institute of Geology and Geography,Chinese Academy of Sciences,Urumqi,830011,China,2.Graduate School of Chinese Academy of Sciences,Beijing 100039,China) |
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| Abstract: | The cotton root distribution characteristics under different amounts of drip irrigation was studied using root ecological niche index(RENI) which was compared with root parameters(root length,root dry weight,root volume,root surface area) ahead.And the results surely will be contributed to describing root distribution traits and root research methodology.The results showed:(1) RENI was well correlated with other root parameters and so can reflect root distribution characteristics.The contribution rate of ro... |
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| Keywords: | RENI drip irrigation under film root distribution cotton irrigation amount |
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