| 不同供水负压对小白菜生长及主要生理指标的影响 |
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| 引用本文： | 向艳艳,黄运湘,黄楚瑜,刘利杉,龙泉,龙怀玉.不同供水负压对小白菜生长及主要生理指标的影响[J].中国农业科技导报,2018,20(8):16-22. |
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| 作者姓名： | 向艳艳 黄运湘 黄楚瑜 刘利杉 龙泉 龙怀玉 |
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| 作者单位： | 1.湖南农业大学资源环境学院, 长沙 410128; 2.海南省琼海市农业科学研究所, 海南 琼海 571429; 3.中国农业科学院农业资源与农业区划研究所, 北京 100081 |
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| 基金项目： | 国家863计划项目(2013AA102901)资助。 |
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| 摘 要： | 为探明负压灌溉条件下小白菜生长发育的适宜负压和土壤含水量，采用土壤盆栽试验结合负压灌溉技术，研究2种土壤（潮菜园土、红菜园土）和3个供水负压（-5.0 kPa、-10.0 kPa、-15.0 kPa）对小白菜生长发育及生理指标的影响。结果表明，小白菜生物产量和根系活力在2种供试土壤条件下均以-5.0 kPa处理最高，随着供水负压值的降低，生物产量和根系活力显著下降；脯氨酸含量以-10.0 kPa处理最高，显著高于-5.0 kPa和-15.0 kPa处理；水分利用效率以-5.0 kPa处理最低，显著低于-10.0 kPa和-15.0 kPa处理。综合小白菜生物产量、水分利用效率及对不同供水负压的生理响应，2种供试土壤适宜小白菜生长发育的供水负压值为-5.0 kPa，土壤含水量潮菜园土为25%，红菜园土为19%。
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| 关 键 词： | 菜园土 负压灌溉 小白菜 生物产量 根系活力 脯氨酸 水分利用效率 |
| 收稿时间： | 2017-11-13 |
Influence of Different Water Supply Negative Pressure on Growth and Main Physiological Indexes of Chinese Cabbage |
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| XIANG Yanyan,HUANG Yunxiang,HUANG Chuyu,LIU Lishan,LONG Quan,LONG Huaiyu.Influence of Different Water Supply Negative Pressure on Growth and Main Physiological Indexes of Chinese Cabbage[J].Journal of Agricultural Science and Technology,2018,20(8):16-22. |
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| Authors: | XIANG Yanyan HUANG Yunxiang HUANG Chuyu LIU Lishan LONG Quan LONG Huaiyu |
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| Institution: | 1.College of Resources and Environmental Sciences, Hunan Agricultural University, Changsha 410128; 2.Qionghai Agriculture Science Research Institute of hainan Province, Qionghai Hainan 571429; 3.Institute of Agricultural Resources and Regional Planning, Chinese Academy of Agricultural Sciences, Beijing 100081, China |
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| Abstract: | In order to find out the suitable negative pressure and soil water content for the growth and development of Chinese cabbage under negative pressure irrigation, this paper conducted a pot experiment combining with negative pressure irrigation technology to study the effects of 3 negative pressure levels (-5.0 kPa, -10.0 kPa, -15.0 kPa) on the growth and physiological index of Chinese cabbage in 2 types of vegetable soils (alluvial garden soil and red-garden soil). The results showed that the biomass and root system activity (TTC reduction) of Chinese cabbage was the highest at -5.0 kPa treatment in 2 types of vegetable soils. Along with the decrease of water supply pressure, biomass and root system activity decreased significantly. Proline content was the highest at -10.0 kPa treatment, significantly higher than that of -5.0 kPa and -10.0 kPa treatments. Water use efficiency was the lowest under -5.0 kPa treatment, significantly lower than that of -10.0 kPa and -15.0 kPa treatments. By analyzing the biomass, water use efficiency and physiological responses to soil moisture of Chinese cabbage, the suitable negative pressure was -5.0 kPa in 2 kinds of tested soils, and the moisture content was 25% for the soil derived from alluvial garden soil and 19% for soil derived from red-garden soil. |
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| Keywords: | vegetable soil negative pressure irrigation Chinese cabbage biomass root system activity proline water use efficiency |
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