Agronomic performance of arugula/nira intercropping in different cultivation arrangements

ABSTRACT Spatial planning of cultivation arrangements is essential to ensure the superiority of intercropping when compared with monocrop. Thus, the aim of this study was to evaluate the agronomic performance of arugula/nira intercropping in different cultivation arrangements. The experiment was carried out in a randomized block design, in a split plot scheme, the plots represented the cultivation arrangements and the subplots the production cycles (winter and spring). The arrangements were T1= arugula monoculture; T2= two rows of arugula alternating with three rows of nira (2R:3N); T3= two rows of arugula alternating with two rows of nira (2R:2N); T4= two rows of arugula alternating with one row of nira (2R:1N); T5= nira monoculture. Productive traits and agronomic performance indexes of the intercropping systems were evaluated. Single arugula cultivation and 2R:1N intercropping achieved similar productivity, 2R:1N intercropping showed the highest productive efficiency, with land-use efficiency of 1.16%, though arugula showed a relative contribution of 84.3% in production yield of the system. We concluded that 2R:1N intercropping can be used to optimize the use of productive inputs in arugula cultivation.

摘要：相较于单作栽培，合理规划种植模式的空间布局是保障间作优势充分发挥的必要前提。本研究旨在评估不同种植模式下芝麻菜（arugula）与韭菜（nira）间作的农艺表现。试验采用裂区设计的随机区组方案，其中主区为种植模式，副区为生产季（冬季与春季）。供试种植模式设置如下：T1为芝麻菜单作；T2为2行芝麻菜与3行韭菜间作（2R:3N）；T3为2行芝麻菜与2行韭菜间作（2R:2N）；T4为2行芝麻菜与1行韭菜间作（2R:1N）；T5为韭菜单作。本研究测定了各间作系统的产量性状与农艺性能指标。结果表明，芝麻菜单作与2R:1N间作的产量水平相当，其中2R:1N间作的生产效率最高，土地利用效率达1.16%；尽管芝麻菜在该间作系统的总产量中相对贡献率达84.3%。综上可知，2R:1N间作模式可用于优化芝麻菜种植过程中的生产要素投入。