基于主成分分析法的玉米/甘蓝不同套种模式的效益评价

为了筛选出玉米和甘蓝套种的最佳比例,完善套种栽培技术推广应用的理论依据,根据玉米套种甘蓝的田间试验数据,在进行产量性状和经济效益比较的基础上,采用主成分分析法,对5种套种模式的优劣进行综合评价。结果表明：玉米/甘蓝不同套种模式的综合效益主要由玉米产量性状、甘蓝产量性状和不同套种模式的经济效益3个方面决定;不同套种模式的综合比较结果为处理3>处理1>处理4>处理2>处理5,即：处理3（玉米密度67500株/hm²,甘蓝密度60000株/hm²）套种模式下,玉米、甘蓝的产量分别为12150、80242.5 kg/hm²,总产值为83634.0元/hm²的,效益高于其他处理,田间配置最合理,是最佳组合模式。该研究优化了种植模式,增加单位面积产量和产值,大幅提高农民收入和种植积极性。

Maize/Cabbage Interplanting Modes: Benefit Evaluation Based on Principal Component Analysis

To screen out the best proportion of maize and cabbage interplanting and improve the theoretical basis of interplanting cultivation technology popularization and application, based on field test data of maize interplanting cabbage, we compared the yield traits and economic benefits, and evaluated the advantages and disadvantages of five interplanting modes by principal component analysis. The results showed that the comprehensive benefits of different maize/cabbage interplanting modes were mainly determined by maize yield traits, cabbage yield traits and economic benefits of different interplanting modes. The comprehensive comparison results of different interplanting modes were as follows: treatment 3 > treatment 1 > treatment 4 > treatment 2 > treatment 5. Under treatment 3 (maize density 67500 plants/hm², cabbage density 60000 plants/hm²), the yield of maize and cabbage was 12150 and 80242.5 kg/hm², respectively, and the total output value was 83634.0 yuan/hm². The benefit was higher than other treatments, and the field configuration was the most reasonable, which was the best combination mode. The study optimized the planting mode, which could increase the yield and output value per unit area, and raise the income of farmers.