CAJ | 학술논문

为寻求南方地区设施盐渍土壤的最优暗管布局方案，设计不同暗管埋深（0．6 m和0．8 m）和间距（6、8 m 和10 m）的暗管排水处理，对不同土层土壤电导率（EC）、番茄产量、主要品质指标（可溶性固形物、总酸、VC、糖酸比）和灌溉水利用效率进行了观测，并引入主成分分析法和投影寻踪分类模型，对不同暗管布局方案进行优选和评价。结果表明：较浅和较密的暗管布局对提高番茄综合品质有利，番茄综合品质以 D1 S1最优；投影寻踪分类模型计算结果显示，D2S2为最优处理，投影值为1．4138。即暗管埋深0．8 m、间距8 m 为综合效益最优的暗管布局模式。
위심구남방지구설시염지토양적최우암관포국방안，설계불동암관매심（0．6 m화0．8 m）화간거（6、8 m 화10 m）적암관배수처리，대불동토층토양전도솔（EC）、번가산량、주요품질지표（가용성고형물、총산、VC、당산비）화관개수이용효솔진행료관측，병인입주성분분석법화투영심종분류모형，대불동암관포국방안진행우선화평개。결과표명：교천화교밀적암관포국대제고번가종합품질유리，번가종합품질이 D1 S1최우；투영심종분류모형계산결과현시，D2S2위최우처리，투영치위1．4138。즉암관매심0．8 m、간거8 m 위종합효익최우적암관포국모식。
To find out the best subsurface drainage layout scheme in greenhouse saline soil in South Chi-na,different layout schemes with various pipe depth (0.6 m and 0.8 m)and space (6,8 m and 1 0 m)were designed.The electrical conductivity (EC)in different soil layers,tomato yield,main quality indexes (solu-ble solids,total acid,vitamin C,sugar/acid ratio)and the irrigation water use efficiency were observed.The principal component analysis and projection pursuit model were introduced to select and evaluate different schemes.The results showed that closer and shallower layout of drainage pipe was beneficial for improving the overall quality of tomato,and the overall quality of D1 S1 treatment was the optimal.The calculation results of projection pursuit showed that D2S2 treatment (pipe depth of 0.8 m and space of 8 m)was the best treatment with the maximum projection value of 1 .41 38 and the optimal comprehensive benefit.