地下滴灌不同埋深对番茄产量和灌溉水利用效率的影响  

Response of Tomato Yield and Irrigation Water use Efficiency Under Subsurface Drip Irrigation at Different Lateral Depths

作　　者：蒋树芳[1] 万书勤[1] 冯棣[1] 刘晓菲[1] 康跃虎[1] 刘士平[1] 

机构地区：[1]中国科学院地理科学与资源研究所陆地水循环及地表过程重点实验室,北京100101

出　　处：《节水灌溉》2015年第8期26-28,共3页Water Saving Irrigation

基　　金：国家高技术研究发展计划项目(2011AA100507);国家科技支撑计划课题项目(2012BAD08B02);国家自然科学基金青年科学基金(51309211)

摘　　要：为了探索番茄地下滴灌的适宜埋管深度,田间试验布置了5个不同埋管深度,滴灌管分别埋设在地下10、20、30、40和50cm深度,研究同一土壤水分控制条件下（地面20cm深度土壤基质势下限控制在-30kPa以上）,番茄品质、产量和灌溉水利用效率对地下滴灌的响应。结果表明,埋管深度在40～50cm时番茄果实中的Vc含量显著高于其他处理;埋管深度在30cm时番茄果实中的可溶性糖含量和糖酸比最高、口味最佳;埋管深度在30cm时,番茄产量和灌溉水利用效率显著最高。综上可见,在番茄缓苗后控制地下20cm处土壤基质势不低于-30kPa的情况下,地下滴灌的最佳埋设深度为30cm。该研究可为指导番茄地下滴灌提供参考。In order to explore the proper lateral depth of underground drip irrigation for tomato,an experiment was carried out to study the response of tomato fruit quality,yield and irrigation water use efficiency to the five lateral depths of underground drip irrigation at 10,20,30,40,50 cm depth under the same soil moisture control（the soil matric potential at 20 cm depth underground was kept higher than-30kPa）.The results showed that Vc content in tomato fruit were significantly higher than that in the other treatments when the lateral depth was 40～50cm;the maximum content of soluble sugar and ratio of sugar to acid in tomato fruit occurred when the lateral depth was 30cm;the maximum yield and irrigation water use efficiency occurred when the lateral depth was30 cm.In conclusion,under the condition of controlling the soil matric potential at 20 cm depth underground higher than-30 kPa after tomato seedling survival,the optimal lateral depth of underground drip irrigation was 30 cm.This study provides a reference for developing tomato production under subsurface drip irrigation.

关 键 词：番茄 地下滴灌 埋管深度 土壤基质势 

分 类 号：S275.4[农业科学—农业水土工程]