TITLE:
Study on Changes of Microclimate in Greenhouse of Pleurotus nebrodensis in Jizhou, Tianjin
AUTHORS:
Ruolan Liu, Shujie Yuan, Hongxia Shi, Xingyue Long, Haidong Jin
KEYWORDS:
Pleurotus Ostreatusin Greenhouse, Microclimate, Variation Law
JOURNAL NAME:
Journal of Geoscience and Environment Protection,
Vol.10 No.8,
August
22,
2022
ABSTRACT: Based on the air temperature (1.0 m and 1.5 m) every 10 minutes, ground temperature (0 cm, 10 cm and 20 cm) and air relative humidity (1.5 m) from the stations in the greenhouse, and the air temperature (1.5 m) every 10 minutes and air relative humidity (1.5 m) from the regional stations in Chutouling Town, Jizhou district of
Tianjin from April 2019 to November 2020, the changes of the microclimate in the
greenhouse of Pleurotus nebrodensis were studied. The results explained that 1) the heat preservation effect of the
greenhouse was the best in spring, the effective accumulative temperature and
active accumulated temperature in the greenhouse had increased by 203.7°C and 233.7°C, respectively, compared with that outside
the greenhouse. In the sunny or cloudy days of summer, the range of temperature
difference (TD) between inside and outside the greenhouse was wider, more than
90% of the TD ranged from -6.0°Cto 2.9°C; 2) the minimum temperature occurred later because of heat preservation effect of the greenhouse, the delay time can reach about 30 minutes in spring, it was about 20 minutes in summer and autumn, and 10 minutes in winter, however, the maximum temperature appeared earlier, it occurred 50 minutes ahead of time in spring, and it has been advanced by 20 minutes in summer and 10 minutes in autumn and winter; 3) the greenhouse mainly played a role of increasing humidity, the humidity
in the greenhouse basically was larger than that outside the greenhouse, except
the periods of 03:10-07:20 in spring, 0:00-08:50 and 23:10-23:50 in winter; 4) the temperature in the greenhouse significantly
positively correlated with the temperature outside the greenhouse, the stronger
correlation also appeared between the ground temperature (at the depth of 0 cm and
10 cm) in the greenhouse and the temperature inside and outside the greenhouse,
however, there was a weak correlation between the ground temperature (20 cm) and the temperature inside and outside the
greenhouse, this implies that the change of temperature had less impact
on the ground temperature at deeper soil layers. This paper is of significance
in identifying the microclimate in the Pleurotus
nebrodensis greenhouse.