| 不同水肥耦合处理下毛竹光合特性 |
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| 引用本文： | 乔一娜,刘凯,邓智文,徐林政,苏建霖,荣俊冬,陈礼光.不同水肥耦合处理下毛竹光合特性[J].热带作物学报,2020,41(11):2253-2258. |
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| 作者姓名： | 乔一娜 刘凯 邓智文 徐林政 苏建霖 荣俊冬 陈礼光 |
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| 作者单位： | 福建农林大学林学院,福建福州 350002 |
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| 基金项目： | 国家重点研发计划项目(2016YFD0600902);福建省科技创新团队项目(118/KLA18069A) |
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| 摘 要： | 以不同树龄毛竹（Phyllostachys edulis）为研究对象,采用裂区试验设计,设置3个田间持水量(85±5)%、(65±5)%、(50±5)%和3种施肥梯度12.50、6.25、3.13 kg/m2,通过测定和分析不同处理下不同生长月份毛竹的叶绿素及光合参数的变化,运用综合评价法来判断不同水肥耦合处理下毛竹林最优的水肥耦合模式,达到水肥高效的毛竹林,进而为毛竹林的水肥供应机制提供参考。研究结果表明：（1）在所有的水肥耦合处理中,T4处理田间持水量(65±5)%,施肥量100%]下的叶绿素含量Chl(a+b)]最高。且在所有生长月份中,8月份各处理毛竹叶片的Chl(a+b)最高。（2）9种水肥处理中,各时期毛竹叶片的净光合速率（Pn）、气孔导度（Cond）、胞间二氧化碳浓度（Ci）和蒸腾速率（Tr）最高为T4处理田间持水量(65±5)%,施肥量100%]。说明高肥适水灌溉能够使毛竹生长获得最优效果。（3）在整个生长阶段,不同水肥耦合处理间的Chl(a+b)、Pn、Ci和Tr的差异最大值出现在8月。说明8月为毛竹需水需肥的最关键时期。因此,T4处理田间持水量(65±5)%,施肥量100%]高肥适水是毛竹进行水肥处理的最优处理。
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| 关 键 词： | 毛竹 水肥耦合 光合特性 |
| 收稿时间： | 2019-11-25 |
Photosynthetic Characteristics of Phyllostachys edulis under Different Water and Fertilizer Coupling Treatment |
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| QIAO Yina,LIU Kai,DENG Zhiwen,XU Linzheng,SU Jianlin,RONG Jundong,CHEN Liguang.Photosynthetic Characteristics of Phyllostachys edulis under Different Water and Fertilizer Coupling Treatment[J].Chinese Journal of Tropical Crops,2020,41(11):2253-2258. |
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| Authors: | QIAO Yina LIU Kai DENG Zhiwen XU Linzheng SU Jianlin RONG Jundong CHEN Liguang |
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| Institution: | School of Landscape Architecture, Fujian Agriculture and Forestry University, Fuzhou, Fujian 350002, China |
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| Abstract: | Bamboo of different ages was used in a split zone test design with three water replenishment gradients (85%±5%, 65%±5%, 50%±5% of field water holding capacity) and three fertilization gradients (12.50, 6.25, 3.13 kg/m2). The changes in chlorophyll and photosynthetic in different growth month under different treatment was determined and analyzed. Principal component analysis was used to comprehensively judge the optimal water-fertilizer coupling mode under different water and fertilizer coupling treatment, and to explore the water and fertilizer supply mechanism of bamboo under different irrigation conditions to achieve water and fertilizer efficient bamboo forest. The results showed that the chlorophyll content was highest under T4 treatment (field water holding capacity 65% ± 5% fertilizer application 100%). The chlorophyll content of the treated bamboo leaves was the highest in August. The net photosynthetic rate, stomata conductance, intercellular carbon dioxide concentration, and transpiration rate of Moso bamboo leaves in each month of T4 treatment were the highest, indicating that high-fertility water-irrigation could achieve the optimal effect of bamboo growth. During the whole growth stage, the maximum difference of chlorophyll content, net photosynthetic rate, intercellular carbon dioxide concentration and transpiration rate between different water and fertilizer coupling treatment occurred in August, meaning that August was the most critical period for bamboo to apply water and fertilizer. |
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| Keywords: | Phyllostachys edulis water and fertilizer couplingphotosynthetic characteristics |
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