应用生态学报2011，Vol.22Issue(9)：2291-2296,6.
地表覆盖对茶园土壤水分、养分变化及茶树生长的影响
Effects of ground surface mulching in tea garden on soil water and nutrient dynamics and tea plant growth
摘要
Abstract
Taking a 2-year old tea garden in Qingdao of Shandong Province as test object, this pa-per studied the effects of different mulching modes on the soil water and nutrient dynamics and tea plant growth. Four treatments were installed, i. e. , no mulching ( CK) , straw mulching (T1) , plastic film mulching (T2), and straw plus plastic film mulching (T3). Comparing with CK, mulc-hing could keep the soil water content at a higher level, and enhance the water use efficiency. In treatments T1 and T3, the tea growth water use efficiency and yield water use efficiency increased by 43%-48% and 7% -13% , respectively, compared with CK. Also in treatments T1 and T3, the contents of soil organic matter, available-N, nitrate-N, and ammonium-N increased significantly, with the soil fertility improved, and the leaf nitrate-N content and nitrate reductase activity in-creased, which promoted the tea growth and yield (12% -13% higher than CK) and made the peak period of bud growth appeared earlier. Considering the tea growth and yield, water and nutri-ent use efficiency, environment safety and economic benefit, straw mulching could be an effective ground surface mulching mode for young tea garden.关键词
茶树/水分利用效率/硝态氮/铵态氮/硝酸还原酶Key words
tea plant/ water use efficiency/ nitrate-N/ ammonium-N/ nitrate reductase activity.分类
农业科技引用本文复制引用
孙立涛,王玉,丁兆堂..地表覆盖对茶园土壤水分、养分变化及茶树生长的影响[J].应用生态学报,2011,22(9):2291-2296,6.基金项目
山东省科技发展计划项目(2006GG2209008,2009GG10009028)和国家农业科技成果转化基金项目(2009.511)资助. （2006GG2209008,2009GG10009028）
