| 引用本文: | 刘晓丽,马理辉,岩晓莹,等.不同灌水方式对沙地枸杞土壤水分及产量的影响[J].灌溉排水学报,0,():-. |
| LIU Xiaoli,MA Lihui,YAN Xiaoying,et al.不同灌水方式对沙地枸杞土壤水分及产量的影响[J].灌溉排水学报,0,():-. |
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| 摘要: |
| 【目的】为了确定根际环形多点源滴灌技术的应用效果，【方法】以陕北沙地枸杞为研究对象，采用小区灌水试验，通过根际环形多点源滴灌与地表滴灌、涌泉根灌对比，研究了不同灌水方式对土壤湿润锋垂直分布范围、土壤含水量、枸杞产量的影响。【结果】研究表明：地表滴灌69 %的土壤湿润体位于地表0-20 cm，涌泉根灌72.2 %的水分位于根系主要分布层，根际滴灌土壤湿润体100 %位于枸杞主要根系层；地表滴灌和涌泉根灌、根际滴灌产量比不灌溉枸杞每公顷分别增产2075 kg、3145 kg、4150 kg，水分利用率分别提高了22.4%、41.9%、60.2 %；净收入高低排序为根际滴灌＞涌泉根灌＞地表滴灌，分别比对照提高了193.1 %、126.3 %和81.2 %，单位水产值达到了15.0元/m3、13.3元/m3和11.5元/m3。【结论】根际环形多点源滴灌的水分湿润范围更适宜于沙质土壤的经济林，是减少地表蒸发损失和深层渗漏的有效技术措施，该技术在沙地经济林生产中有广阔的推广应用前景。 |
| 关键词: 根际环形多点源滴灌;地表滴灌;涌泉根灌;土壤水分;枸杞 |
| DOI： |
| 分类号:S275.6 |
| 基金项目:陕西省科技统筹创新工程计划项目(2016KTCL02-04)；水土保持研究所创新专项；西北农林科技大学试验示范站(基地)科技创新与成果转化项目 |
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| Effect of Different Irrigation Method on Sandy Soil Moisture and Yield of Wolfberry |
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LIU Xiaoli1, MA Lihui2, YAN Xiaoying1, YANG Ronghui3, ZI Hao4
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1.SCollege of Water resources and Architectural Engineering,Northwest A F University,Yangling ShaanxiS;2.SInstitute of soil and water conservation,Northwest A F University,Yangling ShaanxiS;3.Green farm technology Ltd,Shenmu ShaanxiS;4.Agricultural comprehensive development Ltd of Deyuan,Shenmu ShaanxiS
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| Abstract: |
| 【Objective】In order to determine the effect of circular multi-point source drip irrigation in rhizosphere,【Method】we studied the vertical distribution range of soil wetting front, soil moisture and yield of wolfberry under different irrigation method with surface drip irrigation, bubble irrigation and circular multi-point source root drip irrigation using soil core method in Shenmu county located in north Shaanxi province.【Result】The results showed that 69 % of soil wetting zone distributed in 0-20 cm soil layer in surface irrigation, 72.2 % distributed in main root layers in bubble irrigation, while the whole soil wetting zone distributed in main root layers in circular multi-point source root drip irrigation, respectively. The wolfberry yield had increased by 2075 kg/hm2, 3145 kg/hm2 and 4150 kg/hm2, water use efficiency had increased by 22.4 %, 41.9 % and 60.2 %, net income had increased by 81.2 %, 126.3 % and 193.1 %, water economic benefits had reached 11.5 RMB Y/m3,13.3 RMB Y/m3 and 15.0 RMB Y/m3 in surface drip irrigation, bubble irrigation and circular multi-point source root drip irrigation compared to without irrigation.【Conclusion】The soil moisture wetting volume of circular multi-point source root drip irrigation is more suitable for economic forest in sandy soil, it is an effective technical measure to reduce surface evaporation and deep percolation, and it could be applied widely in economic forest in sandy soil. |
| Key words: circular multi-point source drip irrigation, surface drip irrigation, bubble irrigation, soil moisture, wolfberry |
