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我国烤烟连作现象严重,而烤烟连作会影响土壤健康状况,降低烟叶质量。为探究合理的烤烟种植模式,研究了烤烟连作、轮作和套作3种种植模式对烤烟主要农艺指标、土壤酶活性以及烤烟致香成分含量的影响。结果表明:连作烤烟株高较为矮小,除酸性磷酸酶活性较高外,其他土壤酶活性较低,烟叶香气质量较差;相较于烤烟连作,烤烟套作和轮作有利于烟叶生长,提高并且均衡土壤酶活性,改善烟叶香气质量;本试验条件下,甘薯和辣椒可以作为较好的烤烟套作和轮作的对象作物。
The phenomenon of continuous cropping of flue-cured tobacco in our country is serious, and the continuous cropping of flue-cured tobacco will affect the soil health and reduce the quality of tobacco leaf. In order to explore the reasonable planting pattern of flue-cured tobacco, the effects of continuous cropping, rotation and intercropping of flue-cured tobacco on the main agronomic indexes, soil enzyme activities and the aroma components of flue-cured tobacco were studied. The results showed that the plant height of flue-cured tobacco was shorter and the activity of other enzymes was lower except for the higher acid phosphatase activity. The aroma quality of flue-cured tobacco was worse than that of flue-cured tobacco. Compared with flue-cured tobacco, the flue-cured tobacco intercropping and rotation promoted the growth of tobacco leaves Balance soil enzyme activity, and improve the aroma quality of tobacco leaves. Under the experimental conditions, sweet potato and pepper can be used as crop plants for better flue-cured tobacco rotation and rotation.