摘要
为进一步完善浓香型特色优质烟叶栽培技术,在浏阳永安镇开展双因素裂区试验,研究了施氮量(150、180、210、240 kg/hm^(2))与种植密度(16500、19500株/hm^(2))对主栽烤烟品种G80群体透光率与烟叶产质量的互作效应。结果表明:烟株农艺性状以施氮量240 kg/hm^(2)处理较优,低密度处理烟株农艺性状优于高密度处理;同密度条件下,施氮量越高则烟叶叶绿素含量越高、群体透光率越低;同施氮量条件下,低密度处理群体透光率高于高密度处理;随施氮量增加,烤后烟叶的产量和产值呈先升后降趋势,低密度处理产值以施氮量210 kg/hm^(2)处理最高,高密度处理产值以施氮量180 kg/hm^(2)处理最高;不同密度处理中,以16500株/hm^(2)处理经济性状较优;施氮量越低,烤后烟叶烟碱含量越低,且糖碱比和氮碱比以施氮量150 kg/hm^(2)最适宜。综合可见,低施氮量和低密度能提高烤烟的群体透光率,有助于烤烟光合作用,提高烤烟的产质量;G80在浏阳烟区的适宜施氮量为180 kg/hm^(2),适宜种植密度为16500株/hm^(2)。
To further improve the cultivation techniques of strong-flavor type tobacco with high quality,a two-factor split plot experiment was carried out in Yong’an,Liuyang.The interaction effects of nitrogen application rate and planting density on population transmittance,yield and quality of flue-cured tobacco variety G80 were studied.The results showed that:The agronomic character of tobacco plant in treatment of N 240 kg/ha and low-density was better.Under the condition of the same density,the higher the nitrogen application rate,the higher the chlorophyll content and the lower the group transmittance.Under the condition of the same amount of nitrogen application,the light transmittance of low-density treatment was higher than that of high-density treatment.With the increase of nitrogen application rate,the yield and output value of flue-cured tobacco increased at first and then decreased.The output value of low-density treatment was the highest at the nitrogen application rate of 210kg/hm2,and the output value of high-density treatment was the highest at the nitrogen application rate of 180 kg/ha.Among the different density treatments,the economic characters of 16,500 plants/ha were preferable.The lower the amount of nitrogen application,the less nicotine content in flue-cured tobacco leaves,and the best sugar-alkali ratio and nitrogen-alkali ratio is 150 kg/ha.In conclusion,low nitrogen application and low planting density can improve the light transmittance of flue-cured tobacco,contribute to the photosynthesis of flue-cured tobacco,and improve the quality of flue-cured tobacco.The suitable nitrogen application rate for G80 in Liuyang was 180 g/ha,and the suitable planting density was 16,500 plants/ha.
作者
胡桐
王志勇
翟争光
黎娟
易镇邪
张瑞航
龚嘉
杨晨凯
唐春闺
HU Tong;WANG Zhiyong;ZHAI Zhengguang;LI Juan;YI Zhenxie;ZHANG Ruihang;GONG Jia;YANG Chenkai;TANG Chungui(Hunan Agricultural University,Changsha 410128;Pengshui Tobacco Company of Chongqing,Chongqing 409600;Changsha Municipal Tobacco Company,Changsha 410011,China)
出处
《东北农业科学》
2023年第2期32-37,共6页
Journal of Northeast Agricultural Sciences
基金
湖南省烟草公司长沙市公司项目(2018430100240138)。
关键词
烤烟
施氮量
种植密度
群体透光率
产质量
Flue-cured tobacco
N application rate
Planting density
Population light transmittance
Production quality
