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。
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.
出处
《中国农学通报》
CSCD
2007年第11期117-121,共5页
Chinese Agricultural Science Bulletin
基金
贵州省"十一五"攻关重大专项"贵州资源节约增效型农业技术体系研究与示范"(NZ字(2005)3001)
关键词
烤烟
变黄阶段
温度
相对湿度
均价
上等烟率
变化规律
flue-cured tobacco
yellowing stage
temperature
relative humidity
average price
rate of firstclass
regularity
