加气灌溉改善温室番茄根区土壤通气性

为揭示加气灌溉对温室番茄根区土壤通气性的影响,探索加气灌溉下土壤温度、氧气含量、充气孔隙度与土壤呼吸和土壤微生物呼吸的关系,试验设置作物-皿系数为0.6、1.0这2种灌水水平和加气、不加气地下滴灌,共4个处理.结果表明,与地下滴灌相比,加气灌溉下土壤微生物呼吸显著增大了11.5%（P＜0.05）,土壤氧气含量、土壤呼吸、温度、和植物根系呼吸均有所增大.而且作物-皿系数为1.0灌水水平下加气灌溉与不加气相比,土壤和植物根系呼吸显著增大了25.5%和38.8%（P＜0.05）.因此,加气灌溉通过调控土壤水气配合条件,促进了土壤、土壤微生物和植物根系呼吸,有效改善了土壤通气性.而且相比于不加气地下滴...

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Bibliographic Details
Published in农业工程学报 Vol. 33; no. 21; pp. 163 - 172
Main Author 朱艳 蔡焕杰 宋利兵 陈慧
Format Journal Article
LanguageChinese
Published 西北农林科技大学中国旱区节水农业研究院,杨凌,712100%西北农林科技大学旱区农业水土工程教育部重点实验室,杨凌,712100%西北农林科技大学水利与建筑工程学院,杨凌,712100 2017
Subjects
加气灌溉
呼吸
土壤
孔隙度
氧气
温度
氧气
温度
加气灌溉
oxygation
呼吸
porosity
孔隙度
temperature
respiration
soils
oxygen
土壤
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ISSN1002-6819
DOI10.11975/j.issn.1002-6819.2017.21.019

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Summary:为揭示加气灌溉对温室番茄根区土壤通气性的影响,探索加气灌溉下土壤温度、氧气含量、充气孔隙度与土壤呼吸和土壤微生物呼吸的关系,试验设置作物-皿系数为0.6、1.0这2种灌水水平和加气、不加气地下滴灌,共4个处理.结果表明,与地下滴灌相比,加气灌溉下土壤微生物呼吸显著增大了11.5%（P＜0.05）,土壤氧气含量、土壤呼吸、温度、和植物根系呼吸均有所增大.而且作物-皿系数为1.0灌水水平下加气灌溉与不加气相比,土壤和植物根系呼吸显著增大了25.5%和38.8%（P＜0.05）.因此,加气灌溉通过调控土壤水气配合条件,促进了土壤、土壤微生物和植物根系呼吸,有效改善了土壤通气性.而且相比于不加气地下滴灌和作物-皿系数为0.6水平下加气灌溉,作物-皿系数为1.0时加气灌溉在促进土壤和植物根系呼吸方面的效果更明显.另外,土壤温度、充气孔隙度和氧气含量是土壤和土壤微生物呼吸的重要影响因子.番茄生长前期,土壤呼吸与充气孔隙度和氧气含量显著正相关,与土壤温度显著负相关（P＜0.05）;番茄生长后期,土壤和土壤微生物呼吸与土壤温度显著正相关,与氧气含量显著负相关（P＜0.05）.
Bibliography:11-2047/S
Zhu Yan, Cai Huanjie, Song Libing, Chen Hui（1. Institute of Water-saving Agriculture in Arid Areas of China, Northwest A＆F University, Yangling 712100, China; 2. Key Laboratory for Agricultural Soil and Water Engineering in Arid Area of Ministry of Education, Northwest A＆F University, Yangling 712100, China; 3. College of Water Resources and Architectural Engineering, Northwest A＆F University, Yangling 712100, China）
soils;oxygen;porosity;temperature;respiration;oxygation
Oxygation has shown its great yield potential and wonderful application prospect for the crop growth recently. It can impose aerated water to root zone through subsurface drip irrigation pipe and effectively ameliorate the hypoxic soil environment caused by subsurface drip irrigation. The overall goal of this study was to explore the impacts of oxygation on soil aeration. The specific objective was to determine the relationships among soil oxygen concentration, temperature, air-filled porosity, soil respiration and soil microbial resp
ISSN:1002-6819
DOI:10.11975/j.issn.1002-6819.2017.21.019