摘要
分析了设施盐渍土壤不同暗管布局方案对耕层土壤盐分质量分数、番茄产量、番茄品质及暗管建设成本的影响。结果表明,暗管布局越密,耕层土壤盐分降幅越大。在暗管间距6 m、埋设深度0.4 m方案下番茄的综合品质最佳。基于PCA-PP模型的评价结果显示,暗管间距6 m、埋深0.6 m为综合效益最优的暗管布局方案。
Different layout schemes of subsurface pipe drainage in salted soil in greenhouse were designed, and their impacts on the salt content in plough layer, tomato yield, tomato quality and subsurface-pipe construction cost were analyzed.The results showed that the closer the drainage pipes were arranged, the greater the decreasing rate of soil salt content was.The comprehensive quality of tomato was the best when the interval and burying depth of subsurface pipes were 6 m and 0.4 m, respectively.The evaluation result based on PCA-PP model indicated that the subsurface pipe layout scheme for optimal comprehensive benefits was pipe interval 6 m, and pipe burying depth 0.6 m.
出处
《江西农业学报》
CAS
2015年第6期33-36,共4页
Acta Agriculturae Jiangxi
基金
辽宁省教育厅重点实验室项目
关键词
番茄
主成分分析
投影寻踪模型
暗管
布局
评价
Tomato
Principal component analysis
Projection pursuit model
Subsurface pipe drainage
Layout
Evaluation
