【摘要】 运用二因素二次回归饱和D-最优设计,研究不同变黄阶段温湿度对烤烟中部叶均价和上等烟率的变化规律。结果表明:变黄阶段不同温湿度组合对均价及上等烟率的影响基本相似,温度对二者的影响大于相对湿度;均价及上等烟率随温度或相对湿度的升高而均呈迅速上升→缓慢上升→缓慢下降→迅速下降的变化趋势,均价的峰值分别出现在38.0℃和87.0%,上等烟率的峰值分别出现在37.6℃和86.5%;此外研究结果还得出:当温度恒定在37.5～38.0℃,相对湿度恒定在85.0%～88.0%,干湿球差为1.5～2.0℃时,均价、上等烟率分别可达到10元/kg和40%以上。更多还原

【Abstract】 With the best regression of two factors of temperature and relative humidity(RH),the experiment studied the regularity of average price and rate of first class of flue-cured tobacco in different yellowing environment.The result showed that the influence of temperature and RH on average price and rate of first class of flue-cured tobacco was similar,which showed a trend of parabola curve with temperature or RH increasing.The maximum value of average price occur at 38.0℃ and 87.0%,the maximum value of the rate of first class occur at 37.6℃ and 86.5%.The result also showed that when the temperature or RH was in the range of 37.5℃ to 38.0℃ or 85.0% to 88.0%,psychrometric difference was 1.5～2.0℃,the average price and rate of first class would exceed 10 yuan per kg and 40% respectively.更多还原