|Table of Contents|

Comparative Analysis of Environmental Performance and Effects of Two Kinds of Plastic Greenhouses

《北方园艺》[ISSN:1001-0009/CN:23-1247/S]

Issue:
2020年10
Page:
55-63
Research Field:
Publishing date:

Info

Title:
Comparative Analysis of Environmental Performance and Effects of Two Kinds of Plastic Greenhouses
Author(s):
FU Yufang; ZHANG Yahong; FENG Xue; ZHANG Xiaoli; LI Peng; GUO Songtao
(College of Agriculture,Ningxia University,Yinchuan，Ningxia 750021)
Keywords:
plastic greenhouses; temperature; large span; relative humidity; light
PACS:
-
DOI:
10.11937/bfyy.20194331
Abstract:
In view of the low utilization rate of greenhouse land,which was not conducive to mechanized operation,this study proposed a kind of large-span plastic greenhouses with east and west low walls (test greenhouses),which run from north to south and cover the insulation quilt at night.In this experiment,the indoor and outdoor illumination and temperature and humidity of two kinds of greenhouses were analyzed by using the plastic greenhouses with the same span but no east or west wall (control greenhouses) as the control.The results showed that:1)there was no significant difference in light intensity and transmittance between the two greenhouses;2)the temperature in the experimental greenhouse was fast in heating and slow in cooling,and the temperature distribution in the north and south was relatively uniform.The average minimum temperature of the experimental greenhouse was 2.0 ℃,1.6 ℃ higher than the control greenhouse,and the maximum temperature difference with the outside of the greenhouse was 21.3 ℃;3)at night,the relative humidity of the test greenhouses was up to 99%,means high humidity;4)the growth of leafy vegetables in the test greenhouse was better than that in the control greenhouse,but the growth was slow.Therefore,the large-span east-west low wall plastic greenhouse was a kind of large monomer,good thermal insulation performance,stable climate inside the shed,could meet the production of winter leaf vegetables plastic greenhouse,worth popularizing and applying.

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Last Update: 2020-07-25