Authors

Abstract

Chinese solar greenhouses with earthen walls can provide a suitable environment for crop production during winter. In this study, air and soil temperatures inside solar greenhouses in Shanxi Province, China, were monitored from January 1 to March 31, 2024. The results showed that, during nighttime, vertical air-temperature variation among the measurement points was greater than horizontal variation. Zones with approximately equal soil temperatures were also identified among the measurement points. The onset of the increase in weighted mean soil temperature occurred 4 h later than that of the weighted mean air temperature, whereas the onset of the decrease in weighted mean soil temperature occurred 5 h later. These findings provide a data-based foundation for regulating the thermal environment inside Chinese solar greenhouses with earthen walls.

Abstract in Chinese

中国土墙日光温室在冬季期间可为作物提供适宜的生长环境，但是针对日光温室中空气温度与土壤温度的协同变化规律较少。本位在2024年1月1日-2024年3月31日期间对中国山西地区日光温室内空气温度与土壤温度进行测定，其结果显示：在夜间沿测点温度沿竖向的变化速率大于其沿横向的变化速率；土壤中各测点温度在0:00-12:00和18:00-23:00时间段内随时间增加逐渐降低，在12:00-18:00时间段内各测点温度随时间逐渐升高，土壤测点温度存在近似相等的区域；日光温室内空气加权温度和土壤加权温度的升高和下降界点存在一定的滞后效应，土壤加权温度升高界点比空气加权温度升高界点滞后4个小时，土壤加权温度下降界点比空气加权温度下降界点滞后5个小时。该研究可为日光温室内土壤温度和空气温度调控、储热介质和调控方式提供数据支撑。