| 氮素施肥对毛竹生产力与光合能力的影响 |
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| 引用本文： | 高培军,邱永华,周紫球,何仁华,徐佳. 氮素施肥对毛竹生产力与光合能力的影响[J]. 浙江农林大学学报, 2014, 31(5): 697-703. DOI: 10.11833/j.issn.2095-0756.2014.05.006 |
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| 作者姓名： | 高培军 邱永华 周紫球 何仁华 徐佳 |
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| 作者单位： | 1.北京林业大学 林学院, 北京 1000832.浙江农林大学 亚热带森林培育国家重点实验室培育基地, 浙江 临安 3113003.浙江省遂昌县林业局, 浙江 遂昌 3233004.浙江省衢州市衢江区林业局, 浙江 衢州 324000 |
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| 基金项目： | “十二五”浙江省竹产业重大科技成果转化工程项目(2012T201-16);浙江省科技特派员专项(2012T2T134) |
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| 摘 要： | 竹林施肥是集约经营毛竹Phyllostachys edulis林提高经济效益的重要手段之一。为了确定毛竹林氮素的合理施肥量, 从2006-2011年持续调查了氮素施肥对毛竹竹笋和竹材产量的影响, 在2011年测定了施肥对毛竹光合色素和光合作用的影响。结果表明:100, 250和400 kg·hm-2施肥水平均能显著促进毛竹冬笋、春笋和竹材产量提高以及新竹胸径增大, 其中在250 kg·hm-2施肥水平时, 各平均值分别比对照提高了6.8倍(P < 0.01), 2.0倍(P < 0.01), 1.1倍(P < 0.01)和33.3%(P < 0.01), 但是250和400 kg·hm-2施肥水平之间无明显差异。氮素施肥后, 1年生和3年生毛竹叶片的光合色素质量分数、光饱和点、净光合速率均明显提高, 而光补偿点和胞间二氧化碳摩尔分数则明显降低。这表明植株的光合能力明显提高, 其中以250 kg·hm-2施肥效果最明显。综合分析试验结果, 毛竹林施肥量以250 kg·hm-2为宜。
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| 关 键 词： | 植物学 毛竹 氮素施肥 生产力 光合色素 光合能力 |
| 收稿时间： | 2013-10-06 |
Productivity and photosynthetic ability of Phyllostachys edulis with nitrogen fertilization |
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| GAO Peijun;QIU Yonghua;ZHOU Ziqiu;HE Renhua;XU Jia. Productivity and photosynthetic ability of Phyllostachys edulis with nitrogen fertilization[J]. Journal of Zhejiang A&F University, 2014, 31(5): 697-703. DOI: 10.11833/j.issn.2095-0756.2014.05.006 |
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| Authors: | GAO Peijun QIU Yonghua ZHOU Ziqiu HE Renhua XU Jia |
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| Affiliation: | 1.College of Forestry, Beijing Forestry University, Beijing 100083, China2.The Nurturing Station for State Key Laboratory of Subtropical Silviculture, School of Forestry and Biotechnology, Zhejiang A & F University, Lin'an 311300, Zhejiang, China3.Forest Enterprise of Suichang County, Suichang 323300, Zhejiang, China4.Forest Enterprise of Qujiang District, Quzhou 324000, Zhejiang, China |
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| Abstract: | Fertilization is an important intensive operation for improving economic benefits of a Phyllostachys edulis stand. To determine the amount of N fertilizer needed from practical and theoretical aspects, the effects of N fertilization (at 100, 250, and 400 kg·hm-2) on the production of winter shoots, spring shoots, bamboo stems, and diameter at breast height (DBH) of a Ph. edulis stand from 2006-2011 were measured using complete randomized design (CRD). The Ph. edulis stand without addition of N fertilizer was the control. Each treatment and the control had 3 replicates, and Duncan test was used to analyze the difference. The photosynthetic pigment content and photosynthesis of bamboo leaves were also calculated. Results showed that 250 kg·hm-2 N fertilization significantly increased (P < 0.01) new bamboo production of winter shoots, 6.8 fold; spring shoots, 2.0 fold; bamboo stems, 1.1 fold; and DBH 33.3%. However, no significant differences were found for the 100 and 400 kg·hm-2 treatments. After fertilization, the photosynthetic pigment content, light saturation point, and net photosynthetic rate increased; whereas, the light compensation point and intercellular CO2 concentrations (Ci) decreased, indicating that N fertilization raised photosynthetic ability. Among the three fertilization level, 250 kg·hm-2 had the best effect on promoting Ph. edulis photosynthesis. Therefore, 250 kg·hm-2 was the best fertilization rate for Ph. edulis stands. |
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