皖南红壤丘陵茶园土壤养分与根际微生物活动的关系

通过对皖南红壤丘陵茶园200多个土样分析,结果表明,土壤养分含量的高低与茶树生长及产量呈正相关,根际微生物区系组成和数量与茶园土壤养分关系极为密切。茶园铺草后,根际土壤微生物丰富,土壤养分提高,0—20厘米耕作层根际与根外的肥力差异缩小,因而有明显改善土壤供肥状况的效果。通过合理的茶园管理措施,达到气候——微生物——茶园生态环境条件的相对稳定,土壤养分才有保证,提高茶叶产量和品质才有物质基础。

Relationship Between the Soil Nuntrients and Rhizosphere Microbial Activity in the Soil of Tea Gardens in Laterite Hilly Region of South Anhui

More than 200 soil samples which were collected from the tea gardens in thelaterite hilly region of south Anhui have been investigated.Results showed that the soilnuterint contents positively correlate with the growth and yield of tea plant,the com-position and quatity of rhizosphere microbes are closely correlated with the soil nutri-ents in the tea gardens,After the tea gardens were laid with hay,the accumulation ordecomposition of soil organic matter,which effect the population of microbes and con-trol the ecological conditions of tea garden,influence the available nutrients in soilsignificantly,and thus the quality and yield of tea.The effects of the managementpractise in tea garden were discussed from the ecological viewpoint by authors.