Change Rules of Temperature and Humidity in Solar Greenhouses with Different Structures and the Effects on Disease and Yield of Tomato
The Ⅲ, Ⅳ and Ⅴ types of greenhouses in Shandong Province were used to collect the data of temperature and humidity by the automatic recording instruments. The disease occurrence status and yield of tomato were also investigated. The results showed that the Ⅳ - type greenhouse was superior to the Ⅲ and Ⅴ types of greenhouses in heat preservation and dehumidification, and was suitable for tomato cultivation with high yield and little disease. The tomato yield in the three types of greenhouses was significantly positively related with the temperature. The correlation of tomato yield with humidity in Ⅳand Ⅲ types of greenhouses was significant (P <0.05), while that in Ⅴ -type greenhouse was very significant (P <0.01 ).