暗管排水对土壤-番茄系统的影响及其综合效益评价  

Effect of Subsurface Drainage on Soil-Tomato System and Its Comprehensive Benefit Evaluation

作　　者：闫玉民[1] 李凯[2,3] 

机构地区：[1]沈阳农业大学高等职业技术学院水利系,辽宁沈阳110122 [2]沈阳水文局水情科,辽宁沈阳110015 [3]河海大学水利水电学院,江苏南京210098

出　　处：《河南农业科学》2014年第11期49-52,共4页Journal of Henan Agricultural Sciences

基　　金：江苏省创新工程基金项目(CXZZ13_0266)

摘　　要：为寻求防治设施土壤次生盐渍化的最优暗管布局方案,设计不同暗管埋设排水处理(CK:不埋设暗管,T1:埋深0.6m、间距4m,T2:埋深0.8m、间距4m,T3:埋深0.6m、间距6m,T4:埋深0.8m、间距6m),研究不同暗管埋设排水处理对土壤化学性质、番茄产量及品质的影响;同时引入投影寻踪分类模型,对不同暗管埋设排水处理的综合效益进行分析和评价。结果表明:暗管排水处理对土壤化学性质影响显著,耕层土壤电导率(EC)和有机质、速效养分含量均呈下降趋势,其中T1处理下降幅度最大;T2和T3处理番茄产量处于较高水平,分别为142.58t/hm2和137.99t/hm2,两者差异不显著;T4处理番茄的综合品质最优,T2相对较差,而T3和T1差别不大;T3处理综合效益最优,投影值达到1.747 5,T4次之,T2最差,投影值仅为0.251 8。综上,暗管埋深0.6m、间距6m可用作设施农田最优的暗管布局方案。To explore the best arrangement scheme of subsurface drainage pipes,different drainage treatments were designed（CK：no drainage pipes;T1：0.6 m depth and 4 m space;T2：0.8 m depth and 4 m space;T3：0.6 m depth and 6 m space;T4：0.8 m depth and 6 m space）,and the effects of subsurface drainage systems on soil chemical properties,tomato quality and yield were studied;meanwhile,the proj ection pursuit model was introduced to evaluate the comprehensive benefits of different treatments.The results showed that subsurface drainage had significant effects on soil quality,the surface soil EC,organic matter and available nutrients content presented a decline trend,especially T1 treatment;tomato yields of T2 and T3 treatment were higher,and there was no difference between them,the yields were 142.58 t/ha and 137.99 t/ha,respectively;tomato comprehensive quality of T4 treatment was best,T2 treatment was the poorest,and there was no significant difference between T1 and T3 treatment;comprehensive benefit of T3 treatment wasnbsp;the highest,projection value of which reached 1.747 5,followed by T4 treatment,and T2 treat-ment was the poorest with projection value of 0.251 8.Therefore,0.6 m depth combined with 6 m space could be recommended as the optimal arrangement scheme of subsurface drainage pipes.

关 键 词：暗管排水 土壤 化学性质 番茄 产量 品质 投影寻踪 

分 类 号：S276[农业科学—农业水土工程] S153[农业科学—农业工程]