摘要
通过田间小区试验研究了不同N、P施肥量对玉米生育期土壤微生物量C、N、P的影响。结果表明,不同N、P施肥量对微生物量C无明显影响;施N肥量高(225km/hm^2)时降低微生物量N;当施P肥达225 km/hm^2时则对微生物量P产生明显的抑制作用。
The effect of different amounts of nitrogen and phosphorus fertilizers applied on soil microbial biomass carbon, biomass nitrogen and biomass phosphorus was studied during corn growth periods through the field plot experiments. The results showed that different amounts of nitrogen and phosphorus fertilizers applied have no distinct effect on microbial biomass carbon. While the amount of nitrogen fertilizer applied is 225 kg/hm2, micro-bial biomass nitrogen will be reduced. It also has obviously inhibiting effect on microbial biomass phosphorus when the amount of phosphorus fertilizer applied reaches to 225 kg/hm2.
出处
《中国生态农业学报》
CAS
CSCD
2001年第2期72-74,共3页
Chinese Journal of Eco-Agriculture
基金
"九五"中国科学院特别支持项目(KZ95T-04-01)
中国科学院重大项目(KZ951-A1-301)部分研究内容
关键词
玉米
生育期
土壤微生物量
氮肥
磷肥
施用量
Amounts of nitrogen and phosphorus fertilizers applied, Corn growth periods, Soil microbial biomass
