| 引用本文: | 窦超银,孟维忠,陈伟,等.辽宁地区秋冬茬大棚黄瓜滴灌水肥一体化试验研究[J].灌溉排水学报,2018,37(8):22-26. |
| DOU Chaoyin,MENG Weizhong,CHEN Wei,et al.辽宁地区秋冬茬大棚黄瓜滴灌水肥一体化试验研究[J].灌溉排水学报,2018,37(8):22-26. |
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| 摘要: |
| 【目的】在设施农业中合理应用滴灌水肥一体化技术。【方法】以大棚黄瓜为对象，采用正交试验设计方法，以传统沟灌为对照，研究了不同灌溉下限（田间持水率的65%、75%、85%，分别记为W1、W2、W3水平）、施氮量（单产理论需氮量的70%、100%、130%，分别记为N1、N2、和N3）和施钾量（单产理论需钾量的70%、100%、130%，分别记为K1、K2、K3）对黄瓜生长和产量的影响。【结果】与传统沟灌相比，不同滴灌水肥一体化灌溉处理间株高和茎粗无显著差异，有利于获得均一株型，抑制植株无效生长；滴灌水肥一体化产量高于传统沟灌，但在目标产量需肥量的±30%变化范围内，灌溉下限、施氮量和施钾量的交互作用对产量未产生显著影响。极差分析结果表明，灌溉下限是影响产量的主要因素，其次为施氮量和施钾量，获得高产量的最优组合为W2N2K2。【结论】当秋冬茬大棚黄瓜应用滴灌水肥一体化技术时，以75%田间持水率作为灌溉下限，中度施氮量和施钾量较为适宜。 |
| 关键词: 滴灌； 随水施肥； 黄瓜； 产量； 植株生长 |
| DOI：10.13522/j.cnki.ggps.2016.0162 |
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| Fertigation of Autumn-winter Greenhouse Cucumber in East Liaoning Province |
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DOU Chaoyin,MENG Weizhong,CHEN Wei,YAN Weichen
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1. School of Hydraulic Energy and Power Engineering, Yangzhou University, Yangzhou 225009, China;2. Water Conservancy and Hydropower Science Research Institute of Liaoning, Shenyang 110003, China
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| Abstract: |
| 【Objective】 Drip fertigation has been increasingly used in producing vegetables from greenhouses and this paper analyzes its efficacy in east Liaoning Province. 【Method】 The experiment considered three levels of irrigation by keeping soil moisture at 65%, 75% and 85% of the field capacity (referred to as W1, W2 and W3 respectively), three nitrogen applications at 70%, 100% and 130% of the potential nitrogen requirement by the plant (referred to as N1, N2 and N3 respectively), and three potassium applications at 70%, 100% and 130% of the potential requirement by the plant (referred to as K1, K2 and K3 respectively). The model plant was cucumber. 【Result】 Compared with conventional furrow irrigation, there was no noticeable difference in height and diameter of the cucumber under different treatments, but plant phenotypes were more uniform. Fertigation improved the yield compared to conventional furrow irrigation. The irrigation levels and the amounts of applied nitrogen and potassium did not have an significant effect on yield. When the difference between the potential nutrients requirements and the amounts of applied nutrients did not exceed 30%, different combinations of water, N and K did not have a noticeable impact on the yield. Variance analysis indicated that the yield was most sensitive to water, followed by nitrogen and potassium. The yield maximized at W2N2K2. 【Conclusion】 In drip fertigation of autumn-winter vegetables grown in greenhouse, keeping soil moisture at 75% of the field capacity, along with moderate application of nitrogen and potassium (compared with their potential requirements by the plant), gives the best yield. |
| Key words: drip irrigation; fertigation; cucumber; yield; plant growth |
