贵定特色烟叶生产综合技术研究

通过不同品种、施氮水平、打顶时间和种植密度等综合试验.对贵定特色烟叶的主要农艺性状、经济性能、烟叶外观质量与内在品质进行分析对比,以筛选出适合贵定特色烟叶生产的配套综合技术组合.结果表明,从提高烟叶生产效益考虑,最优组合为云烟85,施氮素6.5kg/667m2,于20%中心花开放期打顶,株距60cm,栽1010株/667m2;从提高烟叶内在品质、降碱降焦、提高烟叶可用性考虑,最优组合为K326,施氮素6.5kg/667m2,于50%中心花开放期打顶,株距55 cm,栽植密度为1102株/667m2.

The Comprehensive Cultivation Technique for Producing Peculiar Tobacco in Guiding County

The comprehensive experiments including different varieties,N application level,topping times and planting density were conducted to select the optimum comprehensive cultivation technique of producing the peculiar tobacco by evaluating the main agronomic characters,economic performance,exterior and internal quality in Guiding county.The results showed that the optimum combination for raising tobacco production benefits was Yunyan 85(variety),6.5kg/667m2of N fertilizer,topping time at flowering stage with 20% of center flowers,1010 plants/667m2 with 60 cm individual spacing,and the optimum combination for raising tobacco internal quality and usability and decreasing tar content was K326(variety),6.5kg/667m2of N fertilizer,topping time at flowering stage with 50% of center flowers,1102 plants/667m2 with 55cm individual spacing.