| 付诗宁,魏新光,郑思宇,孙君,葛东.日光温室种植环境对葡萄液流特征的影响[J].干旱地区农业研究,2020,38(4):192~199 |
| 日光温室种植环境对葡萄液流特征的影响 |
| Effect of planting environment on grapevine sap flow characteristics in solar greenhouse |
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| DOI：10.7606/j.issn.1000-7601.2020.04.24 |
| 中文关键词: 葡萄 液流 环境因子 叶面积指数 日光温室 |
| 英文关键词:grapevine sap flow environmental factors LAI solar greenhouse |
| 基金项目:国家自然科学基金（51709174） |
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| 摘要点击次数: 678 |
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| 中文摘要: |
| 为了探究我国东北地区日光温室种植条件下葡萄的液流特性及主要影响因素，对温室主棚（保温）与副棚（无保温措施）葡萄全生育期液流、生长指标及环境指标进行动态监测和系统分析。结果表明：（1）温室主棚与副棚葡萄液流的日内变化呈现单峰或多峰变化趋势，峰值出现在12∶00左右，液流基本停止时间为21∶00，夜间仍有微弱液流产生。不同月份液流强度不同，8月份液流速率最大，其次为6、10月。（2）全生育期下，主棚内相对液流速率（SFR）主要受光能驱动的影响，光合有效辐射（PAR）是其主要影响因子，副棚的相对液流速率主要受到光能驱动和气孔导度的综合影响，饱和水汽压亏缺（VPD）和PAR均是其主要影响因子。气象因子与SFR响应呈现明显的时间变异性，其中8月份SFR与环境因子的相关性最为密切。（3）主棚的相对液流与影响因子的决定系数均大于副棚，且双因子组合模型预测精度高于单因素。（4）不同种植环境下葡萄的夜间液流有一定的占比，主棚的夜间液流占比略小于副棚的夜间液流占比，随着生育期的推进，葡萄植株夜间液流占比呈现先减小后增大的趋势。 |
| 英文摘要: |
| In order to explore the effects of major influencing factors on the sap flow characteristics of grapevine under different planting environments in solar greenhouse in Northeastern China, dynamic monitoring and systematic analysis were conducted on the sap flow, growth index, and environmental characteristics of grapevine in the main greenhouse (heat preservation) and the secondary greenhouse (no insulation measures) during the whole growth period. The results showed that: (1) Under different planting environments, the daily change of grapevine sap flow presented a trend of single peak or multiple peaks, with the peak appearing at around 12∶00, the sap flow basically stopped at 21∶00, and there was still a weak flow at night. The sap flow intensity was different in different months, and the sap flow rate was the highest in August, followed by June and October. (2) During the whole growth period, PAR was the main factor affecting relative sap flow (SFR)in the main greenhouse, and the response degree of VPD and PAR to the sap flow rate of the secondary greenhouse was almost the same.The response of SFR to environmental factors showed apparent variability over time, and the correlation between SFR and environmental factors reached peak in August. (3) The determination coefficients of relative sap flow and influence factors of the main greenhouse were larger than those of the secondary greenhouse, and the prediction accuracy of the two\|factor combination model was higher than that of the single factor. (4) There was a certain proportion of grapevine nocturnal flow in different planting environments, and the proportion of nocturnal flow in the main greenhouse was slightly smaller than that in the secondary greenhouse. With the development of growth period, the proportion of nocturnal flow of grapevine presented a trend of decreasing first and then increasing. |
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