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茶树原是亚热带森林群落中的山茶科常绿树种,具有耐阴、喜温湿、喜酸性土壤的特性,其光合作用的光饱和点较低,光补偿点较高,一般在1000～50000 lux范围,光合效率并不高。全日照的裸地茶园,在炎热夏季往往因光照过强和直射时间过长而使茶树生长受到抑制,甚至灼伤。据调查,全日照也会促进茶树生殖生长,导致花多早衰。江苏常熟市虞山林场,低产林地面积较大,且多为松杂林,经济效益较低,但林木覆盖度较高,生态条件较优越。为了充分利用林间生态气象的优势,发展茶叶生产,提高林地的经济效益,笔者从1988年开始,进行了低产林地间作茶树的技术及经济效益探讨,现将取得的初步结果作一介绍。
Camellia original subtropical forest community in the Camelliaceae evergreen tree species, with shade-tolerant, hi temperature and humidity, hi acidic soil characteristics, the lower the light saturation point of photosynthesis, light compensation point higher, usually in the 1000 ~ 50000 lux Range, photosynthetic efficiency is not high. All-day naked tea plantations, in the hot summer are often too bright and too long direct exposure to tea growth was inhibited, or even burns. According to the survey, full sun will also promote the reproductive growth of tea trees, leading to premature senility. Yushan Forest Farm, Changshu City, Jiangsu Province, low-yield forest land is larger, and mostly loose forests, lower economic efficiency, but higher forest coverage, superior ecological conditions. In order to make full use of the ecological advantages of forest, develop tea production and improve the economic benefits of woodland, the author made a study on the technical and economic benefits of tea tree between low-yield forest land since 1988, and introduced the preliminary results obtained.