Abstract:

To understand the effect of long-term fertilizing on the structure of soil nematode community, the distribution of nematode communities in black soils of different long-term fertilizing managements from Harbin area was investigated. The results showed that the structure of soil nematode community changed significantly after long-term fertilizing, owning to the change of soil environmental conditions. The number and species of soil nematode community decreased and relative abundance of bacterivores increased after long-term fertilizing. Plant-parasites can be controled significantly by long-term fertilizer managements; espically in soils of organic matter and NPK management treatments, the biodiversity of plant-parasites was controled significantly too.