津巴布韦烤烟新品种KRK26的配套栽培技术研究

摘要

An orthogonal test of L9 (34) designed for a new flue-cured tobacco cultivar KRK26 introduced from Zimbabwe was performed in two locations, Xuan'en, Enshi and Fangxian, Shiyan located in the main tobacco leaf production regions of Hubei province in 2009. The objective of this study was to produce scientific basis for planting KRK26 by a greater scale. The results showed that trait performance and tobacco leaf quality were affected significantly by ecological environment. In this study, nitrogen fertilization was the most influential factor in all of three factors, including nitrogen fertilization, ratio of N, P2O5 and K2O and number of tobacco leaves left in the mature plant. The best factor combination, namely, the best cultivation technology combination for KRK26 in the two locations was summarized. The most appropriate nitrogen fertilization, ratio of N, P2O5 and K2O and number of tobacco leaves left in the mature plant is 6 kg/667m2, 1:1.5:3.5 and 22 leaves per plant in Xuan'en; 5 kg/667 m2, 1:1.0:3.0 to 1:1.5:3.5 and 24 to 26 leaves per plant in Fangxian.%为津巴布韦特色优质烤烟新品种KRK26在湖北省主要烟叶产区的推广种植提供科学依据,2009年在恩施宣恩和十堰房县2个试点开展了KRK26的配套栽培技术措施研究.结果表明,生态环境对KRK26的性状表现和烟叶质量有最显著的影响,在本试验设置的3个处理因素中,施氮量是最主导因素.通过对KRK26的经济性状、化学成分和感官评吸质量等性状的综合分析,最终获得了KRK26在湖北省2个主要烟叶生态产区的恩施宣恩和十堰房县的最佳栽培技术措施组合.宣恩县最佳施氮量为6 kg/667 m2,氮磷钾配比为1∶1.5∶3.5,留叶数为22片/株；房县最佳施氮量为5 kg/667 m2,氮磷钾配比为1:1.0:3～1:1.5:3.5,留叶数为24～26片/株.