| 春笋幼竹期毛竹地上生物量格局及养分动态变化规律 |
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| 引用本文： | 许庆标,郭宝华,范少辉,苏文会,赵建成.春笋幼竹期毛竹地上生物量格局及养分动态变化规律[J].热带作物学报,2014,35(8):1481-1486. |
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| 作者姓名： | 许庆标 郭宝华 范少辉 苏文会 赵建成 |
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| 作者单位： | 国际竹藤中心竹藤科学与技术重点实验室;国际竹藤中心竹藤科学与技术重点实验室;国际竹藤中心竹藤科学与技术重点实验室;国际竹藤中心竹藤科学与技术重点实验室;国际竹藤中心竹藤科学与技术重点实验室 |
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| 基金项目： | 国际竹藤中心基本科研业务费专项资金项目（No. 1632011006）；“十二五”国家科技支撑计划课题（No. 2012BAD23B04）。 |
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| 摘 要： | 研究毛竹关键生理阶段春笋幼竹期各龄级母竹地上生物量分配格局与养分动态变化规律,并同小年期的相应值进行比较。结果表明,该时期,光合器官竹叶生物量分配比例随竹株年龄增大而减小,其干质量占地上器官生物量干重的7.09%,比小年期的相应值增大了36.4%。在春笋幼竹生长初期,母竹叶片中氮含量呈下降趋势,而竹根中则略有升高,此后均趋于稳定;钾元素在母竹叶片中的含量随春笋幼竹生长而迅速升高,5月份达最大值12.21 mg/g,磷在叶片和根部的含量均较低。同小年期相比,含量最高的氮元素在叶、枝、秆、根中的含量均较低。春笋幼竹期,新竹的快速生长对母竹生物量格局与养分分配产生了重要影响。
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| 关 键 词： | 毛竹 春笋幼竹期 生物量格局 养分 |
Aboveground Biomass Pattern and Nutrient Dynamic Changes of Phyllostachys edulis During the Spring Shoot and Young Bamboo Growing Period |
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| XU Qingbiao,GUO Baohu,FAN Shaohui,SU Wenhui and ZHAO Jiancheng.Aboveground Biomass Pattern and Nutrient Dynamic Changes of Phyllostachys edulis During the Spring Shoot and Young Bamboo Growing Period[J].Chinese Journal of Tropical Crops,2014,35(8):1481-1486. |
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| Authors: | XU Qingbiao GUO Baohu FAN Shaohui SU Wenhui and ZHAO Jiancheng |
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| Abstract: | The aboveground biomass distribution pattern and nutrient dynamic change of mother bamboo of different age were studied during the spring shoot and young bamboo growing period, which was one of the important stages of Phyllostachys edulis, and it was compared with that in off-year. The result showed that leaf biomass ratio decreased as bamboo age increasing at the stage. The leaf dry weight accounted for 7.09% of aboveground dry biomass, and increased by 36.4% compared with that in off-year. In the early period, nitrogen(N)content in mother bamboo leaf decreased, but in root increased. Then, they tended to be stable. However, potassium(K)content in the leaf rapidly increased as spring shoot and young bamboo growing, and reached the maximum 12.21 mg/g in May. Phosphorus(P)content was low in both leaf and root. Compared with that in off-year, the N content in leaf, branch, stem and root were lower. At the stage, rapid growth of shoot and young bamboo had an important effect on mother bamboo biomass and nutrient distribution. |
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| Keywords: | Phyllostachys edulis Spring shoot and young bamboo growing period Biomass pattern Nutrient |
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