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以烤烟品种K326为试验材料,研究4种种植密度(13 500、15 000、16 500和18 000株/hm2)对烤烟农艺性状、经济性状和化学成分的影响。结果表明,随种植密度的增加,烟株株高增加,最大叶长宽和平均叶重显著降低;烤烟产量、产值和均价呈先升后降趋势;当种植密度为16 500株/hm2时,烟叶内在化学成分协调性较好;综合分析认为,试验条件下K326的种植密度为13 500株/hm2对达到烤烟优质适产目标最为有利。
The effects of four planting densities (13 500, 15 000, 16 500 and 18 000 plants / hm2) on the agronomic traits, economic traits and chemical composition of flue-cured tobacco were studied using a flue-cured tobacco variety K326 as test material. The results showed that with the increase of plant density, plant height increased, the maximum leaf length and width and average leaf weight decreased significantly. The yield, value and average price of flue-cured tobacco increased first and then decreased. When the planting density was 16 500 plants / hm2, The internal chemical composition was well coordinated. According to the comprehensive analysis, the planting density of K326 was 13 500 plants / hm2 under the experimental conditions, which was the most favorable for achieving the target of high quality flue-cured tobacco.