摘要
为解决日光温室冬季作物根区温度低和升温慢的问题,提出基质高架栽培和自然土栽2种栽培模式下的日光温室热风管道根区加温系统,并在北京地区冬季最寒冷时段对日光温室环境进行实际测试,比较和分析不同栽培模式下的热风根区加温效果和加温均匀性。结果表明：基质高架栽培模式和自然土栽模式下根区加温的室内夜间平均空气温度、根区温度较对照不加温区高2.2～3.1℃和0.6～1.5℃,且加温区内各测点的根区温度最低值偏离度为1.9%～13.29%,平均值为4.11%～5.74%;自然土栽模式下根区加温的夜间平均空气温度、根区温度比基质高架栽培模式下的高1℃,根区温度的最低值偏度平均值和总体标准偏差分别低1.12%和0.48×10^-2。由此可见,热风管道加温系统可有效提高日光温室内温度环境,且加温均匀性较好。
Since solar greenhouse crop root zone temperature is low and difficult to be heated in winter, the root zone heating system by hot air was proposed based on substrate elevated cultivation and natural soil plant models. The experiment was carried out to test the heating system effect in the solar greenhouse during the coldest period in Beijing, and the heat effect and uniformity of heating system under different cultivation models were analyzed and compared. The results showed that the average of night air temperature and root zone temperature in heating area was 2.2-3.1℃ and 0.6-1.5℃ higher than the compared area without heating respectively. Meanwhile,the root zone temperature minimum deviation degree of measuring points in heating areas was 1.9%-13.29%, and the average was 4.11%-5.74%. The average of night air temperature and root zone temperature in heating area under natural soil plant model was 1℃ higher than substrate elevated cultivation, and the average and standard deviation of root zone temperature minimum deviation degree were1.12% and 0.48×10^-2。 It was concluded that the root zone heating system by hot air can improve the temperature environment in solar greenhouse effectively, and has good heating uniformity.
出处
《沈阳农业大学学报》
CAS
CSCD
北大核心
2015年第5期624-628,共5页
Journal of Shenyang Agricultural University
基金
"十二五"国家科技支撑计划项目(2014BAD08B02)
公益性行业(农业)科研专项资助项目(201203002)
关键词
日光温室
根区温度
热风加温
高架栽培
自然土栽
solar greenhouse
root zone temperature
hot air heating
elevated cultivation
natural soil plant
