Dynamic changes of photovoltaic greenhouse environment in winter in Henan province
To explore the changes and application effects of the indoor environment in photovoltaic greenhouses during winter,dynamic changes in winter light intensity and temperature were studied and pepper cultivation experiments were conducted using photovoltaic greenhouses,ordinary greenhouses,and open field culture as research objects.The results indicate that the overall trend of light and temperature changes in the three modes is consistent and varies with weather and time.On a typical sunny day,the light intensity of a photovoltaic greenhouse is 33.7%lower than that of a normal greenhouse,and the maximum temperature difference is 35.8%lower than that of a normal greenhouse.On typical rainy days,the maximum light intensity of photovoltaic greenhouse is 45.0%lower than that of ordinary greenhouse,and the maximum temperature of photovoltaic greenhouse is 27.5%lower than that of ordinary greenhouse.The plant height of capsicum in photovoltaic greenhouse was 17.83%higher than that in common greenhouse,and much higher than that in open field.The vitamin C content and soluble solid content of pepper in photovoltaic greenhouse were 4.10%and 1.44%higher than those in common greenhouse,and much lower than those in open field.There was no significant difference in yield per plant among the three cultivation methods.Based on comprehensive analysis,it can be concluded that the in-come from planting early spring chili peppers in a 667 m2 photovoltaic greenhouse is approximately 21 768 yuan,which is 8.77%(1756 yuan)higher than that in a regular greenhouse.In addition,it also has significant significance in reducing atmospheric pollution and alleviating carbon neutrality pressure.
万方数据
维普
