The Proper Meteorological Indicators for High Quality Watermelon in Greenhouse in Central Shandong Province
The meteorological data in watermelon greenhouse in Changle County, Central Shandong Province during 2010-2011 were analyzed by LSD method.Different sowing periods were tested during Jan.15-Feb.25, 2011.Sugar content in watermelon was determined by Fehling reagent titration method, the soluble solids content was determined by Hand-held refractometer; The analysis results of meteorological data were compared with growth situation in each development period.The proper meteorological indicators for high-quality watermelon in greenhouse in central Shan dong Province were determined.The results showed that the optimum growth temperature for watermelon is 25-32 ℃, and different periods have various requirements on temperature : the optimum temperature for germination is 25-30 ℃, seedling period is 25-30 ℃, flowering pollination is 22-27 ℃, fruits development is 25-34 ℃.8 hours sunshine per day is required for watermelon development, and totally 1 000 h is required for the whole growth period of watermelon.The proper air humidity is 50％-60％, relative soil humidity is 65％-75％, seedling period 65％,tendril elongation stage 70％, fruit swollen period 75％-80％.
Watermelon in Shandong ProvinceHigh-qualityMeteorological indexCentral Shandong Province
国家科技期刊平台
NSTL
万方数据
维普
