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以烤烟品种K326为试材,采用大田试验研究了广东南雄地区不同种植模式(单行种植+前期垄体覆盖地膜、单行种植+前期垄体覆盖地膜+后期垄体覆盖稻草、双行凹垄种植+前期垄体覆盖地膜和双行凹垄种植+前期垄体覆盖地膜+后期垄体覆盖稻草)对烤烟根系和叶片衰老特性,以及烤后烟叶经济性状的影响.结果表明:与其他种植模式相比,双行凹垄种植+前期垄体覆盖地膜+后期垄体覆盖稻草处理显著促进了各时期烤烟根系生长,根系活力提高;叶片叶绿素含量和保护酶(SOD、POD)活性均较高,而MDA含量较低,烤后烟叶的产量、产值、均价和上等烟比例等经济性状均显著高于其他处理.双行凹垄种植+前期垄体覆盖地膜+后期垄体覆盖稻草处理可以改善烤烟根系和叶片衰老特性,提高烤后烟叶经济性状,是广东南雄地区优质烟叶生产的有效种植模式.
Taking flue-cured tobacco variety K326 as test material, field experiments were carried out to study the effects of different planting modes in Nanxiong region of Guangdong (monoculture + pre-ridge covering mulching, single-row planting + pre-ridge covering mulching + post-ridge covering straw, double- + Pre-ridge cover plastic film and double-row ridge planting + pre-ridge cover plastic film + post-ridge covered straw) on the aging characteristics of flue-cured tobacco leaves and leaves, and the economic characteristics of the cured tobacco leaves.The results show that: Compared with double-row ridge planting and pre-ridge ridge covered plastic film and post-ridge ridge covered straw treatment, the root growth and root vigor of flue-cured tobacco increased significantly at each stage. Chlorophyll content and activities of protective enzymes (SOD, POD) The MDA content was lower, and the economic traits such as yield, output value, average price and superior tobacco ratio were significantly higher than those of other treatments after double-row planting.Double line ridge planting + pre-ridge cover plastic film + post-ridge cover straw treatment can be improved Flue-cured tobacco root and leaf aging characteristics, to improve the economic characteristics of roasted tobacco leaves, Guangdong Nanxiong region is an effective planting pattern of high quality tobacco production.