Effects of different root zone heating systems on the microclimate and crop development in solar greenhouses  

作　　者：Fen He Jing Tian Liu Wang Yong Hou Fei Qi Yanping Zhang Libao Zhu Zhonghua Li 

机构地区：[1]Academy of Agricultural Planning and Engineering,Ministry of Agriculture and Rural Affairs,Beijing 100125,China [2]Key Laboratory of Farm Building in Structure and Intelligent Construction,Ministry of Agriculture and Rural Affairs,Beijing 100125,China [3]Hebei Agricultural University,Baoding 071001,Hebei,China

出　　处：《International Journal of Agricultural and Biological Engineering》2022年第6期67-72,共6页国际农业与生物工程学报（英文）

基　　金：support provided by Hebei Province Key Research and Development Program(Grant No.21327210D);Independent Research and Development Plan of Academy of Agricultural Planning and Engineering,Ministry of Agriculture and Rural Affairs(Grant No.SP202101,Grant No.QD202107).

摘　　要：Heating greenhouse is indispensable for plant development particularly in winter when the air temperature is lower.In that sense,root zone heating is more energy-saving than traditional air heating.The current work was devoted to the study of the effect of two root zone heating systems based on carbon crystal electrothermal film and low temperature hot water pipe on the microclimate and tomato yield in solar greenhouse.And their performance was tested in the coldest period of winter in Yongqing County of Hebei Province.The results showed that the use of root zone heating system can improve the average substrate temperature by 6.8℃.This microclimate improvement had a positive impact on tomato production.The output per square meter has increased by 19%compared to the unheated.It was also noted that the presence of root zone heating leads to a decrease in the development of disease in heated areas.Based on these results,the root zone heating system can be an effective method of improving the environmental temperature of crop plant,which is of great significance for increasing crop yield.

关 键 词：solar greenhouse root zone heating substrate temperature air temperature tomato trough cultivation 

分 类 号：S154[农业科学—土壤学]