摘要
在田间和盆栽试验条件下,以烟苗常规移栽为对照,分析研究了井窖式移栽对烟苗生长环境大气温湿度、土壤水热状况和叶片水势的影响。结果表明,07：00—18：00,井窖式移栽井窖内平均空气相对湿度为93.37%,比常规移栽烟苗生长环境湿度提高了82%;井窖内环境温度为11-30℃,极差为20℃,常规移栽环境温度变幅为7-44℃,极差达37℃。井窖式移栽烟苗根区平均土壤含水率为27.59%,比常规移栽提高了37%;井窖式移栽根区地温变幅为16.1-30.1℃,常规移栽为11-37.7℃。08：00—20：00,井窖式移栽烟苗叶片水势比常规移栽显著（p〈0.05）提高了29.92%-64.46%。井窖式移栽改善了移栽初期烟苗生长环境大气和土壤的水热条件,显著提高了烟苗叶片水势,是应对烟苗移栽期不适宜水热条件的重要栽培措施。
Through field and pot experiments, the ambient temperature ＆ relative humidity, soil temperature ＆ moisture and leaf water potential of tobacco seedlings transplanted in well-cellar style transplanting （WCST） and conventional transplanting （CT） were analyzed. The results showed that mean ambient relative humidity was 93.37% in WCST, which was 82% higher than that in CT during 07.00-18.00. Ambient temperature ranged from 11 ℃ to 30℃, and polar odds was 20 ℃ in WCST; while, ambient temperature ranged from 7℃to 44℃, and polar odds was 37 ℃ in CT. Mean soil moisture content within root zone of tobacco seedlings was 37% higher in WCST than that in CT, up to 27. 59%. Soil temperature within root zone of tobacco seedlings was between 16. 1℃and 30. 1℃ in WCST while it was between 11℃ land 37.7 ℃ in CT. Otherwise, ear water potentials in WCST were significantly （p〈0.05） 29.92%- 64.46% higher than those in CT. Well-cellar style transplanting improved ambient ＆ soil hydrothermal conditions, and increased leaf water potentials of tobacco seedlings, which was an important cultivation method, especially under non-optimal hydrothermal conditions.
出处
《灌溉排水学报》
CSCD
北大核心
2015年第5期91-95,共5页
Journal of Irrigation and Drainage
基金
国家烟草专卖局科技重点项目(110201302018
110201402012)
贵州省科学技术厅重大科技专项(黔科合重大专项字[2014]6015 3)
关键词
烟苗
移栽方式
井窖式移栽
水热效应
叶片水势
tobacco seedling
transplanting method
well-cellar style transplanting
hydrothermal effect leaf water potential
