| 引用本文: | 张泽锦,唐丽,李跃建,等.滴灌带布置方式对宽厢栽培莴笋土壤水盐分布及产量的影响[J].灌溉排水学报,2018,37(10):23-27+47. |
| ZHANG Zejin,TANG Li,LI Yuejian,et al.滴灌带布置方式对宽厢栽培莴笋土壤水盐分布及产量的影响[J].灌溉排水学报,2018,37(10):23-27+47. |
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| 摘要: |
| 【目的】研究不同的滴灌带布置方式对莴笋宽厢栽培土壤水盐分布和产量的影响。【方法】以莴笋“翠冠”为材料，采用3种布置方式（2-4：2管4行、2-5：2管5行、2-7：2管7行），每个处理设覆膜和未覆膜2种栽培模式，共计6个处理，分析了栽培于沙壤土5、10及15 cm深度水盐分布特征、莴笋根活力和产量指标。【结果】覆膜栽培土壤含水率显著高于未覆膜栽培土壤含水率，不同处理相同深度土壤含水率均表现出2-5处理最高，2-4处理次之，2-7处理最低；2-4、2-5和2-7处理的5 cm和10 cm剖面处，厢面中部的盐分显著高于厢边的，且随着厢面宽度的增加，栽培厢中部与厢边的盐分差距越大；覆膜栽培的莴笋根活力和产量均显著高于未覆膜栽培的，其中覆膜栽培2-5处理栽培土壤的水盐分布均匀，莴笋根活力和产量最高。【结论】在沙壤土条件中种植宽厢莴笋，2管5行布置方式膜下滴灌更利于莴笋生长。 |
| 关键词: 滴灌带配置方式； 土壤水盐环境； 根活力； 产量 |
| DOI：10.13522/j.cnki.ggps.2017.0414 |
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| Effect of Drip-irrigation Pipe Arrangement on Distribution of Water and Salt in Soil as Well as the Yield of Asparagus Lettuce under Raised-bed Cultivation |
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ZHANG Zejin, TANG Li, LI Yuejian, LIU Xiaojun
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1. Horticulture Research Institute, Sichuan Academy of Agricultural Sciences/Vegetable Germplasm Innovation and Variety Improvement Key Laboratory of Sichuan Province, Chengdu 610066, China; 2. Key Laboratory of Horticultural Crop Biology and Germplasm Enhancement in Southwest, Ministry of Agriculture, Chengdu 610066, China
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| Abstract: |
| 【Objective】The flow and distribution of water and salt in soil modulate plant growth and this paper studied the effects of arrangement of drip irrigation pipe on water-salt distribution, as well as root activity and the yield of asparagus lettuce grown in raised bed. 【Method】 The variety of Cuiguan asparagus lettuce was used as the model plant; it was planted in raised beds with six drip-irrigation pipe arrangements: 2 pipes in 4 rows (2-4), 2 pipes in 5 rows (2-5), and 2 pipes in 7 rows (2-7). Each arrangement had a plastic-mulch treatment and none-mulch treatment. For each treatment, we measured the distribution of water and salt in the soil at depth of 5 cm, 10 cm and 15 cm depth respectively, as well as the associated root activity and yield of the asparagus lettuce.【Result】The soil moisture content in soil under plastic mulch was significantly higher than that without mulch, the highest in which was in the 2-5 treatment and the lowest in which was in 2-7 treatment. At the depth of 5 cm and 10 cm under the 2-4, 2-5 and 2-7 treatments, the salt content in center of the raised-bed was significantly higher than that in the edge, and the difference between them increased with the width of the raised bed. 【Conclusion】The distribution of water and salt under the 2-5 treatment with mulch is relatively uniform in the soil, benefiting root activity and lettuce yield. |
| Key words: drip irrigation arrangements; distribution of water and salt; root activity; yield |
