Effects of drought-waterlogging stress and environmental factor on sap flow of tomato under rain shelter
DENG Sheng1, YU Lei1, SHAO Guangcheng2, KONG Qiongju1, LU Jianghai1
1.Institute of Rural Water, Jiangxi Institute of Hydraulic Research, Nanchang, Jiangxi 330029, China; 2.College of Water Conservancy and Hydropower Engineering, Hohai University, Nanjing, Jiangsu 210098, China
Abstract:Based on pot cultivation experimental data of tomato under rain shelter, the diurnal variation of sap flow velocity is analyzed at different irrigation amounts and under various weather conditions. The environmental factor, i.e. independent variable, includes solar radiation, ambient temperature, air relative humidity and soil moisture. The sap flow velocity is correlated to these factors by using path analysis and grey relational analysis, the correlation coefficient, coefficient of determination and grey relational degree have been determined. The results indicate that the diurnal variation of sap flow changes significantly under different weather conditions. Particularly, it presents a single-peak curve on sunny day, but bimodal peak one at 10:00 and 14:00 on cloudy day. The sap flow is small and shows a little fluctuation in the rain. A diurnal variation curve of sap flow of at different irrigation amounts can reflect the status of drought hardening and waterlogging, and a slight deficit can resist waterlogging to improve sap flow. Unfortunately, once the deficit is beyond a certain limit, it can reduce the flow significantly. Solar radiation is the most sensitive factor affecting the sap flow because its coefficient of determination is as high as 0.91. Both methods have achieved consistent results.
邓升, 余雷, 邵光成, 孔琼菊, 卢江海. 旱渍胁迫及环境因子对避雨番茄茎流变化的影响[J]. 排灌机械工程学报, 2016, 34(3): 244-250.
DENG Sheng, YU Lei, SHAO Guangcheng, KONG Qiongju, LU Jianghai. Effects of drought-waterlogging stress and environmental factor on sap flow of tomato under rain shelter. Journal of Drainage and Irrigation Machinery Engin, 2016, 34(3): 244-250.
[1]邵光成, 郭瑞琪, 刘娜. 不同灌水模式对南方辣椒叶绿素荧光参数的影响[J]. 农业工程学报, 2011,29(9):226-230. SHAO Guangcheng, GUO Ruiqi, LIU Na. Effects of different irrigation patterns on chlorophyll fluorescence parameters of hot pepper in Southern China[J]. Transactions of the CSAE, 2011,29(9):226-230.(in Chinese)[2]何群华, 乐向晖. 全球变暖对农作物影响及对策的研究进展[J]. 陕西农业科学, 2008(5):121-124,159. HE Qunhua, LE Xianghui. Progress in global warming on crop and its countermeasures[J]. Shaanxi journal of agricultural sciences, 2008(5):121-124,159.(in Chinese)[3]邵光成,蓝晶晶,仝道斌, 等. 灌排方案对避雨番茄需水特性与产量的影响[J]. 排灌机械工程学报,2013,31(1):75-80. SHAO Guangcheng, LAN Jingjing, TONG Daobin, et al. Influence of irrigation and drainage mode on water requirement content and fruit yield of tomato cultivated in rain-shelter[J]. Journal of drainage and irrigation machinery engineering, 2013,31(1):75-80.(in Chinese)[4]刘浩,孙景生,段爱旺,等. 温室滴灌条件下番茄植株茎流变化规律试验[J]. 农业工程学报,2010,26(10):77-82. LIU Hao, SUN Jingsheng, DUAN Aiwang, et al. Experiments on variation of tomato sap flow under drip irrigation conditions in greenhouse[J]. Transactions of the CSAE, 2010,26(10):77-82.(in Chinese)[5]VERMEULEN S J, AGGARWAL P K, AINSLIE A, et al. Options for support to agriculture and food security under climate change[J]. Environmental science & policy, 2012,15(1):136-144.[6]胡弘劫. 基于茎流的温室内黄瓜灌溉技术研究[D]. 镇江:江苏大学,2006.[7]LI Jiusheng, RAO Minjie. Sprinkler water distributions as affected by winter wheat canopy[J]. Irrigation science, 2000,20(1):29-35.[8]彭致功,段爱旺,刘祖贵,等.日光温室条件下茄子植株蒸腾规律的研究[J]. 灌溉排水,2002,21(2):47-50. PENG Zhigong, DUAN Aiwang, LIU Zugui, et al. Research on plant transpiration in eggplant in solar-heated greenhouse[J]. Irrigation and drainage, 2002,21(2):47-50.(in Chinese)[9]郑健,蔡焕杰,王健,等.日光温室西瓜产量影响因素通径分析及水分生产函数[J]. 农业工程学报,2009,25(10):30-34. ZHENG Jian, CAI Huanjie, WANG Jian, et al. Path analysis of yield components and water production function of watermelon in greenhouse[J]. Transactions of the CSAE, 2009,25(10):30-34.(in Chinese)[10]谢恒星,蔡焕杰.基于通径分析的膜下滴灌温室甜瓜高产指标研究[J].中国农村水利水电,2012(10):1-3. XIE Hengxing, CAI Huanjie. Research on high yield indicators of greenhouse muskmelons under mulching drip irrigation based on a path analysis[J]. China rural water and hydropower, 2012(10):1-3.(in chinsese)[11]黄俊,赵西宁,吴普特. 基于通径分析和灰色关联理论的坡面产流产沙影响因子分析[J]. 四川大学学报(工程科学版),2012,44(5):64-70. HUANG Jun, ZHAO Xining, WU Pute. Factors analysis of slope runoff and sediment based on path analysis and grey relational analysis[J]. Journal of Sichuan University(engineering science edition), 2012,44(5):64-70.(in chinsese)[12]程新意,李绍疆. 通径分析的数学模型[J]. 工程数学,1990,6(4):99-105. CHENG Xinyi, LI Shaojiang. Mathematical model of path analysis[J]. Journal of mathematics for technology, 1990,6(4):99-105.(in Chinese)[13]崔党群,林德光. 通径分析的矩阵算法[J]. 生物数学学报,1994,9(1):71-76. CUI Dangqun,LIN Deguang. The matrix solutions on path analysis[J]. Journal of biomathematics, 1994,9(1): 71-76.(in Chinese)[14]申忠宝,王建丽,潘多锋,等. 大豆单株产量与主要农艺性状的灰色关联度分析[J]. 中国农学通报,2012,28(33):75-77. SHEN Zhongbao, WANG Jianli, PAN Duofeng, et al. The grey relation analysis of agronomic traits with per plant yield of Soybean[J]. Chinese agricultural science bulletin, 2012,28(33):75-77.(in Chinese)[15]曹明霞. 灰色关联分析模型及其应用的研究[D]. 南京:南京航空航天大学,2007.