3个烤烟品种(系)在盘县烟区的适应性

为筛选适宜盘县烟区种植的烤烟新品种,采用田间大区试验研究贵烟13号、PVH1452和贵烟8号3个烤烟品种(系)在盘县烟区的适应性、生育期、农艺性状、抗逆性和经济性状等综合表现。结果表明:贵烟8号和贵烟13号的生育期适中,分别为131d和141d;农艺性状、抗病性和经济性状等综合性状表现较好,打顶后株高、烟叶数、腰叶长、腰叶宽分别为113.0cm和121.0cm、24片/株和22.3片/株、76.1cm和87.9cm、28.0cm和32.5cm,均比云烟87和K326高,田间生长整齐一致,落黄程度较好。综合抗病能力以贵烟8号较好,大田生长期未感染黑胫病和青枯病,气候斑点病感病率仅3.2%;贵烟13号抗气候斑点病和赤星病较突出,感病率分别为0.9%和2.7%;但对黑胫病和青枯病抗性较差,感病率分别为39%和15%。在经济性状中,均价、中上等烟比率以贵烟13号最好,分别22.73元/kg和84.99%,比云烟87(19.76元/kg和81.06%)分别增加15.03%和3.93百分点;产量和产值以贵烟8号最高,分别为133.48kg/667m~2和2 481.17元/667m~2,比云烟87(85.95kg/667m~2和1 698.43元/667m~2)增产55.3%和46.09%。贵烟8号和贵烟13号2个新品种可在当地示范种植。

Adaptability of Three Flue-cured Tobacco Varieties (Lines) in Pan County

The adaptability,growth period,agronomic character,stress resistance and economic character of three flue-cured tobacco varieties (Guiyan 8,Guiyan 13 and PVH 1452) were analyzed by a field test in Pan County to screen new suitable flue-cured tobacco varieties in Pan County.Results:The growth period of Guiyan 8 and Guiyan 13 with a moderate growth period is 131 d and 141 d respectively and their agronomic character,resistance to disease and economic character are better than CK1 (Yunyan 87) and CK2 (K 326).The height,leaf number,middle leaf length and middle leaf width of Guiyan 8 and Guiyan 13 with a good growth uniformity and good yellowing degree after topping are 113.0 cm and 121.0 cm,24 leaves/plant and 22.3 leaves/plant,76.1 cm and 87.9 cm,and 28.0 cm and 32,5 cm respectively,all higher than CK1 and CK2.Guiyan 8 with a better integrated disease resistance does not infect black shank and bacterial wilt and its weather fleck rate is 3.2 ％ only in the field.The disease rate ofweather fleck,brown spot,black shank and bacterial wilt of Guiyan 13 is 0.9％,2.7％,39％ and 15％ in the field separately.The average price and first and middle-class tobacco proportion of Guiyan 13 are 22.73Yuan/kg and 84.99 ％,15.03％ and 3.93％ higher than CK1 (19.76 Yuan/kg and 81.06％)separately.The yield and output value of Guiyan 8 are 133.48 kg/667m2and 2481.17 Yuan/667m2,55.3％ and 46.09％higher than CK1 (85.95 kg/667m2 and 1 698.43 Yuan/667m2) respectively.In conclusion,Guiyan 8 and Guivan 13 should be cultivated for demonstration in Pan County.