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当前位置: 首页 > 文章 > 加气条件下土壤CO_2排放对土壤过氧化氢酶活性及番茄生长的响应 节水灌溉 2018 (12) 12-16+23
Position: Home > Articles > Response of Soil CO_2 Emission to Soil Catalase Activity and Tomato Growth under Aerated Condition Water Saving Irrigation 2018 (12) 12-16+23

加气条件下土壤CO_2排放对土壤过氧化氢酶活性及番茄生长的响应

作  者：
胡文同;杨志超;郑心洁;蒋洪丽;蔡焕杰;陈慧
单  位：
西北农林科技大学旱区农业水土工程教育部重点试验室;西北农林科技大学水利与建筑工程学院
关键词：
加气灌溉;土壤CO2;过氧化氢酶活性;番茄
摘  要：
为研究加气条件下土壤过氧化氢酶活性(CAT)和番茄生长对土壤CO_2排放的影响,试验于2017年4月至7月采用静态暗箱/气相色谱法对加气灌溉(AI)和常规膜下滴灌(CK)两个处理下的温室番茄地土壤CO_2排放进行原位监测;并同时测定各处理CAT、土壤充水孔隙率(WFPS)、土壤温度和番茄株高。结果表明:在番茄整个生育期内,各处理土壤CO_2排放通量均呈现先增加后减小的趋势; CAT呈现波动性变化,在生育末期达到最大值。AI处理CO_2累积排放量(9 031.08 kg/hm2)较CK处理增加了2.4%,但不显著(P>0.05)。此外,加气灌溉促进了番茄的生长,增加了CAT和土壤温度,但降低了WFPS,且处理间各指标差异性均不明显(P>0.05)。土壤CO_2排放通量与CAT、土壤温度和番茄株高均呈正相关(P>0.05),与WFPS呈极显著负相关(P<0.01)。
译  名：
Response of Soil CO_2 Emission to Soil Catalase Activity and Tomato Growth under Aerated Condition
作  者：
HU Wen-tong;YANG Zhi-chao;ZHENG Xin-jie;JIANG Hong-li;CAI Huan-jie;CHEN Hui;College of Water Resources and Architectural Engineering of Northwest A&F University;Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education,Northwest A&F University;
单  位：
HU Wen-tong%YANG Zhi-chao%ZHENG Xin-jie%JIANG Hong-li%CAI Huan-jie%CHEN Hui%College of Water Resources and Architectural Engineering of Northwest A&F University%Key Laboratory of Agricultural Soil and Water Engineering in Arid and Semiarid Areas of Ministry of Education,Northwest A&F University
关键词：
aerated irrigation;;soil CO2;;soil catalase activity;;tomato
摘  要：
In order to study the effects of soil catalase activity( CAT) and tomato growth on soil CO_2 emission under the condition of aerated irrigation,an experiment was conducted by using the static closed chamber/gas chromatography method from April to July,2017. The experiment adopted two treatments,including aerated irrigation( AI) and traditional subsurface drip irrigation( CK). Soil CO_2 flux,CAT,soil water-filled pore space( WFPS),soil temperature and plant height of tomato were measured simultaneously. The results indicated that throughout the whole growth stage of tomato,soil CO_2 fluxes showed a trend of first increasing then decreasing under the two treatments,and soil catalase activity presented a fluctuating change and reached the maximum value at the end of tomato growing period. Compared to CK,AI increased cumulative soil CO_2 emissions by 2. 4%,but the treatment effect was not significant( P > 0. 05). AI promoted tomato growth,increased CAT and soil temperature,while decreased WFPS,but the differences between the two treatments did not reach a significant level( P>0.05). Positive correlations between soil CO_2 fluxes with CAT,soil temperature and plant height were observed( P>0.05). Significant negative relationships among soil CO_2 fluxes and WFPS were reported( P<0.01).

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