草地土壤养分与微生物类群分布消长规律的分析研究(1988～1989)

A STUDY OF THE PASTURE SOIL FERTILITY AND THE DISTRIBUTION AND GROWTH AND DECLINE REGULARITY OF THE MICROPOPULATION(1988～1989)

本文报道了丘陵红壤开垦种植牧草1～2年后的土壤微生物类群的分布状况及消长规律。种草初期,微生物数量逐年增加,土壤有机质及氮含量开垦第一年减少,以后呈回升趋势。

The distribution and growth and decline regularity of the micropopulationwere studied in the hilly red soil on which grasses were planted for 1～2 yea-rs.During the initial stage after planting,the amount of microorganism incr-eased year by year.The content of soil organic matter and nitrogen decreasedin the first year,then began to increase.