培肥方式对松嫩平原黑土土壤微生物的影响

Effect of fertilizer application mode on edaphon in black soil in Songnen Plain

摘要: 试验研究培肥方式对松嫩平原黑土生态系统中与N素转化有关的土壤微生物（好气性自生固氮菌、氨化细菌、亚硝酸盐细菌和反硝化细菌）数量的影响，结果表明：单独施入农肥可提高土壤好气性自生固氮菌、氨化细菌及反硝化细菌数量；化肥单独施用可降低土壤好气性自生固氮菌数量，提高反硝化细菌数量；农肥化肥等量配比施入土壤好气性自生固氮菌、亚硝酸盐细菌及反硝化细菌数量均增加。

Abstract: Field experiment was conducted to research the effect of manure and chemical fertilizer on the number of nitrogen transferrer edaphon(e.g.aerobic nitrogen-fixing bacteria, ammonifiers,nitrite bacteria and denitrifying bacteria) in black soil ecosystems.Results show that application of manure increase the number of aerobic nitrogen-fixing bacteria, ammonifiers and denitrifying bacteria, while chemical fertilizers reduce the number of aerobic nitrogen-fixing bacteria in black soils, increase the number of denitrifying bacteria.Otherwise combination of equally proportioned manure and chemical fertilizer promotes aerobic nitrogen-fixing bacteria, nitrite bacteria and denitrifying bacteria activities.