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Title:: Analysis of Grape Growth and Meteorological Conditions Inside and Outside the Plastic Greenhouse

Author(s):: ZHANG Yanyan1; ZHAO Wei1; ZHUANG Yiyun2; LE Zhangyan1; (1.Langfang Meteorological Office of Hebei,Langfang，Hebei 065000;2.Beichen Meteorological Office of Tianjin,Tianjin 300400)

Keywords:: plastic greenhouse; grape; growth characteristics; meteorological elements

Abstract:: The grape of plastic greenhouse in Langfang city was taken as the research object.The grape growth parameters and the meteorological data inside and outside the plastic greenhouse were observed in 2016.The characteristics of grape growth and meteorological factors were analyze.The results showed that the relative temperature was around 15 ℃ between inside and outside,the inside temperature was peak around 14:00,was the highest temperature appeared earlier 1-2 hours of outside.Inside the plastic greenhouse 20 cm soil temperature generally was higher than the outside 5-7 ℃,the temperatureof inside reached the grape root activity time was earlier than the outside for 13 days.The grapes that were outside the plastic greenhouse from germination to maturity used 110 days,and grapes of inside used 101 days.A difference of 9 days between inside and outside the plastic greenhouse.Compared with the outside,the inside germination period to maturity was shorter 13 days,coloring to maturity was longer 2 days.According to the test results,between inside and outside grape quality difference was greater.The contents of sugar,acid,soluble solids were more higher inside the plastic greenhouse,but the vitamin C content was higher than that was outside the plastic greenhouse.The grape inside the plastic greenhouse was colored better.