摘要
对不同放牧压力下草原砂质栗钙土微生物量C、N、P进行较为系统地研究。结果表明:就土壤原土来看,随着放牧压力的增大,土壤微生物量C,N先增加后减少;土壤微生物量C在放牧率2.67只羊/hm2时相对较高,微生物量P随着放牧压力的增大逐渐降低。
The effect of different grazing pressures on grassland sandy chestnut soil microbial biomass of C, N, P were systematically studied. The results showed that, with the increase of grazing pressure, there is first an increase and then a decline in soil microbial biomass of C, N; the level of soil microbial biomass C is relatively high when the grazing rate is at 2.67 sheep /hm 2, while microbial biomass P decreases gradually with the increasing grazing pressure.
出处
《农业科技与装备》
2014年第5期11-12,14,共3页
Agricultural Science & Technology and Equipment
关键词
放牧压力
草原砂质栗钙土
微生物量
研究
grazing pressure
grassland sandy chestnut soil
microbial biomass
research
