烤烟套种玉米耕作模式玉米品种筛选试验

本文针对乐业县烟叶生产发展出现的烟粮争地和占用优质水田的现状，根据乐业县旱地面积大和光温水自然爷件未得到充分利用的实际，通过试验筛选合适的玉米品种，探索发展旱地烤烟与玉米套种模式，以期促进粮烟可持续发展。试验采用四个玉米品种与烤烟套种，结果表明四个品种作物产量平均在5360_-6155kg／hm2之间，虽比当地单纯种中玉米低12．5％-24.3％，但总产值则增加170．62％-181．93％；不同品种适应套种模式的差异较大，正大619和隆玉2号规避“寒露风”灾害天气的影响较好，迪卡007和迪卡008则较差，认为乐业县适用于烤烟与玉米套种的玉米品种，从优到劣的排列为：正大619、隆玉2号、迪卡007和迪卡008。

Screening experiment of Maize varieties in the flue-cured tobacco intercropping patterns

Considering the present situations that Leye County has large area of dry land,mean while high-quality paddy field was used for tobacco planting,and light-temperature-water natural conditions haven＇t been made full use,in order to promoting the sustainable development of grain and tobacco, this paper explored the dry land flue-cured tobacco-corn intercropping patterns by means of screening suitable maize varieties. The results of four maize varieties interplanted with tobacco showed that the average yield of four varieties of maize was between 5360-6155kg/hm2, 12.5-24.3% lower than that of local medium maize,but the total output value increased by 170.62--181.93%. There was great difference in ability of adapting to the interplanting mode between different varieties of maize： ＂Zhengda 619＂ and ＂Longyu No.2＂ were better than ＂Dekarl 007＂ and ＂Dekarl 008＂ in avoiding the ＂cold dew wind＂ disaster weather. The results indicated that in Leye County varieties of maize for interplanting with flue-cured tobacco were prioritized from ＂Zhengda 619＂ ,to＂Longyu No. 2＂, ＂Dekarl 007＂ and then ＂Dekarl 008＂.