基于灰色关联度分析的旱砂地籽瓜/花生间作模式评价

为了改善甘肃中部地区旱砂地籽瓜连作障碍严重的现象,在试验研究的基础上,采用灰色关联分析方法对旱砂地新型种植模式(籽瓜/花生间作模式)下3种花生间作密度(株距40 cm、50 cm、60 cm)进行了评价。结果表明,在等权重、权重侧重籽瓜产量和产籽率、权重侧重经济效益下,花生间作密度为株距60 cm的关联度均为最大,分别为0.718 0、0.692 3和0.730 8,株距为40 cm次之,分别为0.657 3、0.647 0和0.662 4。表明花生间作株距60 cm为该间作模式的最佳种植密度。

Evaluation of Planting Modes of Intercropped Seed Watermelon and Peanut in Dry Sandy Land Based on Grey Relational Analysis

In order to improve the serious successive cropping obstacle of seed watermelon in dry sandy land in central region of Gansu,this paper evaluated three planting density( plant spacing of 40 cm,50 cm and 60 cm) in new cropping patterns( watermelon/peanut intercropping mode) in dry sandy land based on experimental studies and by the method of gray relational analysis. The research showed that whether under average or variable correlation of the yield of seed watermelon or economic benefits, the peanut plant spacing was 60 cm under intercropping was the best,with the correlation being 0. 718 0,0. 692 3, and 0. 730 8,followed by the peanut plant spacing was 40 cm under intercropping,the worst peanut plant spacing was 50 cm under intercropping,with the correlation being 0. 657 3,0. 647 0,and 0. 662 4. The study showed that the peanut intercropping spacing of 60 cm was the best planting density of planting modes of intercropped seed watermelon and peanut in dry sandy land.