ISHS Acta Horticulturae 578: International Symposium on Design and Environmental Control of Tropical and Subtropical Greenhouses
EFFECT OF NON-WOVEN FABRICS TUNNEL ON HARVEST DATE AND YIELD OF SPRING-TEA IN TAIWAN |
| Authors: | S.-M. Lee, K.-L. Chen, C.-Q. Chang, I.Z. Chen |
| Keywords: | spring tea, tunnel, yield, quality |
| Abstract:
Although the price of early spring-tea can be 1.5~2 times the price of normal and late spring-tea or 5~10 times over that of summer-tea, but its production are restricted by cool and dry climate of early spring in central Taiwan, and low temperature in northern Taiwan. This experiment used non-woven fabrics tunnel in an attempt to facilitate tea growth in early spring in two locations, which were Yang-Mei (northern Taiwan) and Min-Chin (central Taiwan), with two cultivars. The cover materials were of two kinds of non-woven fabrics (30g/m2 and 20g/m2) and 3 control treatments. The control treatments included 50% shading black screen tunnel (the shading rate was about the same as 30 g/m2 non-woven fabrics), 25% shading silver screen (the shading rate was about the same as 20 g/m2 non-woven fabrics) and field condition. The plant under 30g/m2 non-woven fabric tunnel had the earliest harvest date and the shortest plucking cycle but showed no significant differences to those under 20g/m2 non-woven fabric tunnel. There had higher mean temperature, soil temperature and low relative humidity under non-woven fabrics tunnel than other treatment, while black screen tunnel had the lowest temperature, this might cause this treatment had the lowest yield in most of the treatments. The value of fresh leaf and gross income of ‘Syh-Jih-Chuen’ tea bush under non-woven fabrics tunnels were higher then other treatment, especially 30g/m2 non-woven fabrics tunnel, while in ‘TTES No.12’, only 30g/m2 non-woven fabrics tunnel had the higher gross income then control. Comparison of two non-woven fabrics treatment showed that 30g/m2 was better than 20g/m2 non-woven fabric because of its longevity in usage. | |
Download Adobe Acrobat Reader (free software to read PDF files) | |
