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| DOI：10.13522/j.cnki.ggps.2017.0670 |
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| Impact of Different Aerated Irrigation on Growth and Yield of Greenhouse Celery |
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MA Xiaojian, SUN Jingsheng, LIU Hao, GONG Xuewen， LI Huanhuan， CUI Yongsheng
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Key Laboratory of Crop Water Use and Regulation, Ministry of Agriculture, Farmland Irrigation Research Institute,Chinese Academy of Agricultural Sciences, Xinxiang 453002, China Graduate School of Chinese Academy of Agricultural Sciences, Beijing 100081, China
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| Abstract: |
| 【Objective】 We present the results of an experimental study on the growth and yield of greenhouse celery in response to different aerated irrigations. 【Method】 Pot experiments were conducted in a greenhouse with subsurface seepage irrigation (S) and subsurface drip irrigation (D). Each irrigation had two treatments: aeration (A) and non-aeration (B); the control was furrow irrigation (CK) without aeration. For each treatment, we measured the growth, yield, soil moisture distribution and water use efficiency. 【Result】 The yield under aerated subsurface seepage irrigation was 10.6% higher (p<0.05) than that under subsurface drip irrigation without aeration, and the aeration did not lead to a significant increase in yield. Compared with the drip irrigation without aeration, aerated seepage irrigation increased the yield by 12.8% (p<0.01). The moisture distribution in soil varied with irrigation method. Compared to the drip irrigation, the seepage irrigation increased the 0~20 cm water content by 9.6% (p<0.05) while reduced the 20~40 cm water content by 12.9% (p<0.05). Since celery is a shallow-rooting crop, seepage irrigation is more suitable to meet its demand for water, thereby having a high water use efficiency. The differences between yield under seepage and drip irrigations was due to the differences in plant weight rather than the petioles of each plant. 【Conclusion】 A combined use of subsurface seepage irrigation and aeration can noticeably improve the yield and WUE of greenhouse celery. |
| Key words: subsurface irrigation; aerated irrigation; greenhouse celery; yield; water use efficiency |
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