摘要
在亚热带丘陵区1年生幼龄茶园通过连续4年间作白三叶大田试验，研究了其对茶园土壤环境及茶叶品质、产量的影响，结果表明，茶园间作白三叶降低了土壤容重，提高了土壤孔隙度、有机质、全氮、水解氮的含量及钾的活性，消耗了部分有效磷；增加了土壤关键层次（0～20cm）和关键时期（4～6月）的水分含量，延缓和缩短了夏季高温干旱与秋季持续干旱时间；获得了土壤降温时增温、保温与升温时降温的双向动态调控效果．增加了同一层次土壤温度的稳定性，延缓了高温和低温的出现时间，缩短了过度高温时间。从而促进了茶树生长，改善了茶叶品质，显著增加了茶叶产量。与清耕茶园相比，茶园间作白三叶后，春秋茶的酚氨比分别下降了17．10％和30．90％，产量提高了32.65％。
This paper investigated the effects of four years intercropping white clover in a one-year old tea plantation on soil environment, and tea yield and quality in subtropical hilly region. The results showed that intercropping white clover decreased soil bulk density, increased soil porosity and the contents of soil organic matter, total nitrogen, available nitrogen and available potassium, and partly consumed soil organic phosphorous. It increased the moisture content in key soil layer （0-20 cm） during key time （April - June）, and also, postponed and shortened the period of high temperature in summer and the continual drought in autumn. Intercropping showed duplex effects of raising and keeping temperature at cold time while lowering temperature during hot season, making the temperature of same soil layer more stable. Intereropping also postponed the coming of high and low temperature, shortened the duration of extreme high temperature, lightened the effects of high temperature on tea tree growth, and thus, boosted the growth of tea tree, and improved the tea yield and quality. Compared to single-cropping, intercropping decreased the ratio of polyphenol to amino acid in spring and autumn tea by 17.10% and 30.90%, respectively, and increased the tea yield by 32.65%.
出处
《生态学杂志》
CAS
CSCD
北大核心
2006年第3期281-285,共5页
Chinese Journal of Ecology
基金
国家十五科技攻关项目(2004BA606-08)
中国科学院知识新创项目(KZCX3-SW-426)
中国科学院农业重点课题资助项目(NK十五-D-04)。
关键词
幼龄茶园
间作白三叶
土壤环境
品质产量
young tea plantation, intereropping white clover, soil environment, quality and yield.
