摘要
为了解烟苗对温度的耐受能力,确定膜下烟适宜的破口温度,开展了田间及室内模拟验证试验。结果表明,破口前膜下温度可高出膜外10℃左右,烟苗长期处于45℃以上高温成活率明显下降且生育期出现后移。未破口处理烟苗栽后35 d的株高、茎围、叶面积指数均显著低于40℃和45℃破口的处理,且烟叶产量、产值仅为40℃破口处理的83%左右。及时破口的烟叶总糖含量略高,糖碱比值适宜,感官评吸得分略高。40℃和45℃破口处理的烤烟整体表现差别不大。因此,当膜下温度超过45℃时应及时破口,以防高温灼伤烟苗。
In order to investigate the tolerance ability of tobacco seedling to temperature, the field and indoor simulation experiments were conducted to determine the suitable crevasse temperature. The results showed that, the temperature under film was higher about 10 ℃ than outside before crevasse, and survival ratio of tobacco seedlings long-term exposed above 45 ℃was decreased significantly, also the growth period of seedlings was delayed. After transplanting 35 d, the plant height, stem girth and leaf area index of tobacco seedlings which didn ＇t crevasse were significantly lower than 40 ℃ and 45 ℃ treatments,moreover, the yield and output value were about 83% to 40 ℃ crevasse treatment. The total sugar content in tobacco leaf crevassing timely was slightly higher, sugar nicotine ratio was appropriate, and the sensory score was slightly higher than other treatments. There was no obviously difference between 40 ℃ and 45 ℃ crevasse treatment as a whole. Therefore, when the temperature under film exceeded 45 ℃, the membrane should be crevassed timely to avoid high temperature burn of tobacco seedling.
出处
《湖北农业科学》
2016年第5期1212-1216,1220,共6页
Hubei Agricultural Sciences
基金
中国烟草总公司云南省公司科技项目(2013YN12
2012YN55)
关键词
烤烟
膜下移栽
破口温度
成活率
品质
flue-cured tobacco
transplanting tobacco seedling under plastic film
crevasse temperature
survival ratio
quality
作者简介
邓小鹏（1980-），男，河南永城人，助理研究员，博士，主要从事烟草栽培及生理生化研究，（电话）0871-65106496（电子信箱）hddxp@163．com；
通信作者，杨军章（1974-），男，云南昭通人，农艺师，硕士，主要从事烤烟生产技术推广工作，（电话）0870-2239911（电子信箱）327697329@qq．com。
