The influence of automatically-operated insulating cover of plastic greenhouses based on the Internet of Things on growth and quality of overwintering leafy vegetables
[Objective]The study aimed to explore the effect of automatically-operated insulation cover of plastic greenhouse on the growth and quality of overwintering leafy vegetables,based on the application of Internet of Things system.[Method]Based on the daily sunrise and sunset time,the environmental condi-tion threshold of automatic uncovering of insulation quilt was designed as treatment H for different climatic environments,and the uncovering time according to administrator experience as the control,i.e.,CK.The same varieties of leafy vegetables(pakchoi,Leaf lettuce,rape and spinach)were planted in the two plastic greenhouses,followed by comparing the growth index,quality and yield of these leafy vegetables.[Result]The automatic control system based on the Internet of Things could effectively monitor environmental infor-mation such as light intensity,temperature and humidity inside and outside the greenhouse,and could auto-matically cover and uncover the insulation quilt.The application of the system was safe,convenient and flexible.During three growth periods of overwintering leafy vegetables,the average air temperature and soil temperature of H treatment were 10.8%～21.3%and 10.1%～23.2%higher than those of CK treat-ment,respectively,which promoted the growth,development and the quality and yield of leafy vegetables.[Conclusion]The plastic greenhouse controlled with the Internet of Things system has a good environmen-tal performance,which may solve the problem of lacking leafy vegetables in winter and has a value of pro-motion.
Internet of Thingsplastic greenhouseinsulating quiltgrowthquality
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