秦烟99烤烟在陇县烟区的适宜栽植密度研究

Study on Suitable Planting Density of Qinyan 99 Tobacco in Longxian Tobacco Growing Area

为筛选出适应陇县烟草种植的适宜密度,优化陇县烤烟品种布局并提高烟草产量与质量,通过小区对比试验,对烤烟品种秦烟99适宜栽植密度进行了研究,并对其农艺性状、抗病性、主要经济性状、原烟外观质量进行了评价。结果表明,随着栽培密度的增加,秦烟99大田生育期延长,株高、腰叶减小,发病率增加,经济效益变差,烤烟产量与栽植密度成正相关关系。陇县烟区秦烟99的栽植密度以1.50万株/hm^(2)较为适宜,在该栽培密度条件下,烟叶产量达1806.0 kg/hm^(2),产值达到50433.0元/hm^(2)。

In order to screen the appropriate density for tobacco planting,optimize the layout of Longxian fluecured tobacco varieties and improve tobacco yield and quality,the suitable planting density of Qinyan 99 tobacco was studied through plot comparative experiment,and the agronomic characters,disease resistance,main economic characters and raw tobacco appearance quality of Qinyan 99 were evaluated.The results showed that with the increase of planting density,the growth period of Qinyan 99 in the field was prolonged,the plant height and waist size decreased,the incidence rate increased,and the economic benefit become worse.The yield and density of flue-cured tobacco were positively correlated.The suitable planting density for Qinyan 99 in Longxian tobacco growing area was 1.50×10^(4) plants/hm^(2).Under this density condition,the yield reached 1806.0 kg/hm^(2),and the output value reached 50433.0 yuan/hm^(2).