关键词: 烤烟, 种植模式, 土壤酶, 农艺指标, 致香成分

Abstract: In China the phenomenon of continuous flue-cured tobacco cropping is serious, which will affect the soil health condition, and reduce the quality of tobacco leaves. In order to find rational planting pattern for flue-cured tobacco, this paper studied the effects of 3 different cropping patterns: continuous cropping, rotational cropping and intercropping on the major agronomic targets, soil enzyme activity and aroma substances content of flue-cured tobacco. The results showed that with continuous cropping, tobacco had relatively short plant height, the acid phosphatase activity was higher, but the other soil enzyme activities were lower, and the aroma quality is poorer. Compared with continuous cropping, the intercropping and rotational one were favorable for tobacco leaf growth, could enhance and balance the soil enzyme activity, and improve the aroma quality of tobacco leaves. Under the same experimental conditions, sweet potato and hot pepper can serve as appropriate intercropping or rotational cropping crops for flue-cured tobacco.

Key words: flue-cured tobacco, planting pattern, soil enzyme, agronomic index, aroma substances