茶园不同栽培方式有机质和氮磷钾的动态变化

5年定点定位研究了在相同的土壤、气候和施肥条件下，人工生态茶园、密植免耕茶园、常规栽培茶园3种主要栽培方式对土壤肥力的影响。结果表明：人工生态茶园栽培方式不仅能提高土壤肥力，而且土壤养分有富集上升趋势；密植免耕方式虽然能较充分利用土地资源，土壤肥力也得以提高，但较人工生态茶园群落结构差；常规栽培方式其土壤肥力有下降趋势。因此，综合衡量，人工生态茶园栽培是较为理想的栽培方式。

Changes of Organce Matier Nitrogen Phosphorus and Potassium Nutrient in Different Cultivation System in Tea Garden

A five-year’s follow-up monitoring program for investigation wasaccomplished in the tea garden in Meitan. It was found that, under same conditions of weather, soil and fertilizing three different cultivation systems caused different fertility on soil.The soil fertility of the conventional cultivation tea garden decreased and showed certain retrogression in property. The artificial ecological tea garden brought a series of good ecological benefit. Under this cultivation system, soil fertility appeared an increasing and evolution trend. The close planting non-farming tea garden not only could make a full use of the land, but also could make the fertility increase. However, the soil fertility in the artificial ecological tea garden was relativelly low. Comparing all the advantages and disadvantages of three cultivation systems. It is suggested that alternativelly using the artificial ecological cultivation in tea garden will be a better system.