Intercropping of collard green and radish ‘Cometo’: spatial arrangement and growing efficiency

ABSTRACT Intercropping is a method of growing plants that assists in rational use of natural resources. Based on this concept, the aim of this study was to evaluate the response of collard green and radish ‘Cometo’ crops in monoculture and in intercropping under different spatial arrangements through physical production indicators (technical coefficients). The study was conducted in plant beds in a randomized block design (RBD) with 5 treatments and 4 replications. The treatments involved growing the two crops separately and intercropped under different spatial arrangements: (1:2) one row of radish ‘Cometo’ between two rows of collard green; (2:2) two rows of radish ‘Cometo’ between two rows of collard green; and (3:2) three rows of radish ‘Cometo’ between two rows of collard green. The spatial arrangements adopted did not affect the growth and development of radish ‘Cometo’ and of collard green, and all the arrangements used exhibited high land use efficiency, especially the 3:2 arrangement, which provided the greatest land use efficiency, at 1.69.

摘要 间作（intercropping）是一种可合理利用自然资源的植物栽培模式。基于该理念，本研究旨在借助生产物理指标（physical production indicators，技术系数），评估单作（monoculture）与间作模式下，‘Cometo’品种萝卜（radish ‘Cometo’）与羽衣甘蓝（collard green）在不同空间配置（spatial arrangements）下的生长响应。本研究采用随机区组设计（Randomized Block Design, RBD），在种植床中开展试验，设置5个处理、4次重复。处理组涵盖两种作物的单作模式，以及三种不同空间配置的间作模式：(1:2) 两行羽衣甘蓝之间配置一行‘Cometo’品种萝卜；(2:2) 两行羽衣甘蓝之间配置两行‘Cometo’品种萝卜；(3:2) 两行羽衣甘蓝之间配置三行‘Cometo’品种萝卜。本研究采用的所有空间配置模式均未对‘Cometo’品种萝卜与羽衣甘蓝的生长发育产生影响，且均展现出较高的土地利用效率（land use efficiency），其中尤以3:2配置模式最优，其土地利用效率达1.69。