|Title:||影響大葉種茶樹日燒症之環境因素||Other Titles:||Environmental Factors Affecting Sunscald of Large-leafed Tea||Authors:||林木連
|Keywords:||大葉種茶樹;台茶18號;氣候變遷;日燒症;Large-leafed tea;TTES No. 18;Climate change;Sunscald||Issue Date:||Dec-2013||Publisher:||農業試驗所||Related Publication(s):||農業試驗所特刊第177號||Start page/Pages:||160-165||Source:||102年度農業工程與自動化計畫成果研討會論文集||Conference:||102年度農業工程與自動化計畫成果研討會
Proceedings of the Symposium on Agricultural Engineering and Automation Project Achievements, 2013
Climate change causes occasional heat injury problems on summer tea, especially on large-leafed tea such as TTES No. 18 (Ruby) cultivated in the low altitude, having a summer leaf burning issue. In the summer of 2011 to 2013 for three consecutive years we conducted surveys on four large-leafed tea gardens located at Yuchi and Minchen, respectively. The result shows that TTES No. 18 was easy to suffer sunscald as compared to that of smaller leafed tea cultivars, such as the Suchichuan, Chinsin Oolong, Jin Xuan, and Jade etc. Depending on tested gardens, percent diseased area of summer sunburn ranged from 15% to 50% in TTES No. 18, while all the smaller-leaf cultivars had no sunburn outbreak. Sunburn damage tended to affect coming sprout germination of next season, with average shoot length only one quarter of non-victimization one. Large-leafed tea sunburn was closely related to the conditions of environmental factors. In conclusion, the investigation shows that sunscald tended to occur in tea garden with no shading. Tea gardens located in the basin topography with poor ventilation and exposure to hot full sun at noon. Tea plants growing in full sun or against a south- or west-facing down slope often got sunscald. It was because hot air was hard to escape during hot noon. The platform-type tea garden located in asphalt roadside was aptly suffered sunburn. Sunscald was a particular problem in large-leafed tea after summer plucking. In addition, bad soil moisture conditions were one of affecting factors.
|Appears in Collections:||農業工程組|
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.