河南农业科学
河南農業科學
하남농업과학
JOURNAL OF HENAN AGRICULTURAL SCIENCES
2014年
11期
49-52
,共4页
暗管排水%土壤%化学性质%番茄%产量%品质%投影寻踪
暗管排水%土壤%化學性質%番茄%產量%品質%投影尋蹤
암관배수%토양%화학성질%번가%산량%품질%투영심종
subsurface drainage%soil%chemical property%tomato%yield%quality%proj ection pursuit
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0.6 m、间距4 m，T2：埋深0.8 m、间距4 m，T3：埋深0.6 m、间距6 m，T4：埋深0.8 m、间距6 m），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142.58 t／hm2和137.99 t／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1.7475，T4次之，T2最差，投影值仅为0.2518。综上，暗管埋深0.6 m、间距6 m可用作设施农田最优的暗管布局方案。
為尋求防治設施土壤次生鹽漬化的最優暗管佈跼方案，設計不同暗管埋設排水處理（CK：不埋設暗管，T1：埋深0.6 m、間距4 m，T2：埋深0.8 m、間距4 m，T3：埋深0.6 m、間距6 m，T4：埋深0.8 m、間距6 m），研究不同暗管埋設排水處理對土壤化學性質、番茄產量及品質的影響；同時引入投影尋蹤分類模型，對不同暗管埋設排水處理的綜閤效益進行分析和評價。結果錶明：暗管排水處理對土壤化學性質影響顯著，耕層土壤電導率（EC）和有機質、速效養分含量均呈下降趨勢，其中T1處理下降幅度最大；T2和T3處理番茄產量處于較高水平，分彆為142.58 t／hm2和137.99 t／hm2，兩者差異不顯著；T4處理番茄的綜閤品質最優，T2相對較差，而T3和T1差彆不大；T3處理綜閤效益最優，投影值達到1.7475，T4次之，T2最差，投影值僅為0.2518。綜上，暗管埋深0.6 m、間距6 m可用作設施農田最優的暗管佈跼方案。
위심구방치설시토양차생염지화적최우암관포국방안，설계불동암관매설배수처리（CK：불매설암관，T1：매심0.6 m、간거4 m，T2：매심0.8 m、간거4 m，T3：매심0.6 m、간거6 m，T4：매심0.8 m、간거6 m），연구불동암관매설배수처리대토양화학성질、번가산량급품질적영향；동시인입투영심종분류모형，대불동암관매설배수처리적종합효익진행분석화평개。결과표명：암관배수처리대토양화학성질영향현저，경층토양전도솔（EC）화유궤질、속효양분함량균정하강추세，기중T1처리하강폭도최대；T2화T3처리번가산량처우교고수평，분별위142.58 t／hm2화137.99 t／hm2，량자차이불현저；T4처리번가적종합품질최우，T2상대교차，이T3화T1차별불대；T3처리종합효익최우，투영치체도1.7475，T4차지，T2최차，투영치부위0.2518。종상，암관매심0.6 m、간거6 m가용작설시농전최우적암관포국방안。
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 was 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.
