Relationship between fruit quality of Golden Delicious apple and meteorological factors in high attitude area of Sichuan-Tibet
[Objective] This study explored the relationship between the quality of Golden Delicious apple and meteorological factors in high altitude area of Sichuan-Tibet to provide theoretical basis for agricultural zoning and high quality production.[Method] Fruit quality of apples from Maoxian,Xiaojin,Yanyuan,Kangding and Linzhi in high attitude area of Sichuan-Tibet were determined in 2012-2013.The correlation between fruit quality with mean temperature (MT),mean temperature diurnal range (MTDR),≥10 ℃ accumulated thermal units (≥10 ℃ ATU),amount of precipitation (AP) and sunshine hours (SH) from May to August and in annual were analyzed.Then the optimum values of the major meteorological factors were obtained.[Result] Golden Delicious apples had significant difference in 5 key production cities with the better in Xiaojin.The main meteorological factors affecting fruit quality were MT in August,MTDR from May to August and in annual,AP in annual and SH from June to August and in annual.The optimum meteorological factors were determined as 19.1-21.3 ℃ MT in August,10.6-12.3 ℃ MTDR in May,11.0 ℃ MTDR in June,9.7 ℃ MTDR in July,11.7-13.3 ℃ MTDR in August,12.8 ℃ MTDR in annual,636.5 ℃ ≥10 ℃ ATU in July,169.4 mm AP in June,637.1-787.9 mm AP in annual,154.3 h SH in June,174.6-200.8 h SH in July,153.5 h SH in august and 2 405.6 h SH in annual.[Conclusion] The meteorological conditions for producing high-quality Golden Delicious apple in high attitude area of Sichuan-Tibet were confirmed.
Golden Delicious applefruit qualitymeteorological factorhigh attitude area in Sichuan-Tibet