朱艳,蔡焕杰,宋利兵,侯会静,陈慧.加气灌溉下气候因子和土壤参数对土壤呼吸的影响[J].农业机械学报,2016,47(12):223-232.
Zhu Yan,Cai Huanjie,Song Libing,Hou Huijing,Chen Hui.Effects of Climatic Factors and Soil Parameters on Soil Respiration under Oxygation Conditions[J].Transactions of the Chinese Society for Agricultural Machinery,2016,47(12):223-232.
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加气灌溉下气候因子和土壤参数对土壤呼吸的影响   [下载全文]
Effects of Climatic Factors and Soil Parameters on Soil Respiration under Oxygation Conditions   [Download Pdf][in English]
投稿时间:2016-07-31  
DOI:10.6041/j.issn.1000-1298.2016.12.027
中文关键词:  加气灌溉  土壤呼吸  土壤温度  大气相对湿度  土壤氧气含量
基金项目:国家自然科学基金项目(50939005)和高等学校博士学科点专项科研基金项目(20110204130004)
作者单位
朱艳 西北农林科技大学 
蔡焕杰 西北农林科技大学 
宋利兵 西北农林科技大学 
侯会静 西北农林科技大学 
陈慧 西北农林科技大学 
中文摘要:为揭示温室内气候因子和加气灌溉下土壤温度、氧气含量和水分对土壤呼吸的影响,对比研究了加气灌溉和地下滴灌(对照)下,各因子与土壤呼吸速率的关系。结果表明:5cm处土壤温度与土壤呼吸呈极显著正相关关系,加气灌溉和对照处理下相关系数分别为0.615和0.564,且两处理下5cm处土壤温度分别解释了土壤呼吸变化的46.6%和32.4%。大气相对湿度和土壤氧气含量也影响着土壤呼吸的变化。加气灌溉和对照处理下,大气相对湿度解释了土壤呼吸速率变化的35.2%和23.7%。两处理下土壤氧气含量分别解释了20%左右的土壤呼吸变化。各因子交叉混合影响了76.8%(加气灌溉)和42.5%(对照)的土壤呼吸变化。由此可知,土壤温度是影响土壤呼吸变化的控制性因子,大气相对湿度和土壤氧气含量也是影响土壤呼吸变化的重要因子。各因子对土壤呼吸速率存在交叉影响,且加气灌溉下的拟合效果明显优于对照。加气灌溉下土壤含水率略有下降,土壤呼吸速率和土壤氧气含量与对照差异显著,分别提高了33.16%和16.61%。加气灌溉明显改善了根区土壤环境,土壤呼吸的其他限制因素减少,因此加气灌溉下土壤温度、大气相对湿度、土壤含水率和土壤氧气含量对土壤呼吸的交叉影响更明显,对土壤呼吸变化的拟合效果更优。
Zhu Yan  Cai Huanjie  Song Libing  Hou Huijing  Chen Hui
Northwest A&F University,Northwest A&F University,Northwest A&F University,Northwest A&F University and Northwest A&F University
Key Words:oxygation  soil respiration  soil temperature  air humidity  soil oxygen concentration
Abstract:Oxygation, which can impose aerated water to root zoon through Venturi tube and subsurface drip irrigation (SDI), has been showing yield improvement potentials and great application prospects. The impacts of climatic factors and soil temperature, oxygen concentration and moisture on soil respiration under oxygation and no aerated subsurface drip irrigation conditions were explored. Consequently, two treatments with three replicates were included. Plot experiments were conducted in a greenhouse during tomato growing season under these two different irrigation scenarios. The seasonal variation of soil respiration rate, soil temperature, soil oxygen concentration and soil moisture were described to investigate the relativity between soil respiration rate and these factors. Results showed that with oxygation and CK, soil temperature at the depth of 5cm (T5) had a high significant positive correlation with soil respiration rate (Rs), and the correlation coefficients were 0.615 and 0.564, respectively. Meanwhile, under the oxygation and CK conditions, T5 explained 46.6% and 32.4% variation of Rs, respectively. In addition, air humidity (RH) and soil oxygen concentration (Os) also affected the variation of Rs. RH explained 35.2% and 23.7% variation of Rs under the oxygation and CK conditions, respectively. And Os explained about 20% variation of Rs for the two treatments. The interaction of these factors affected 76.8% and 42.5% variation of Rs with oxygation and CK, respectively. Therefore, soil temperature was a controlling factor that constrained the soil respiration. Air humidity and soil oxygen concentration also were the important factors affecting the variation of soil respiration. Meanwhile, these factors had an interactive effect on variation of soil respiration rate, and the fitting result under oxygation was more effective. In addition, soil moisture was declined slightly with oxygation. The soil respiration rate and soil oxygen concentration under the oxygation conditions had a significant difference with CK, which were increased by 33.16% and 16.61% compared with CK, respectively. Thus, oxygation could improve soil environment effectively, and then decrease the limiting factors of soil respiration. As a result, under oxygation conditions, soil respiration was more sensitive to the interactions of soil temperature, relative humidity, soil moisture and soil oxygen concentration, and the fitness between these factors and soil respiration was better.

Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.

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