摘要
为摸清长期施肥对土壤线虫群落结构的影响,对哈尔滨地区黑土长期施肥条件下土壤线虫群落结构特征变化进行了研究。结果表明:长期施肥条件下,由于土壤环境状况发生了变化,土壤线虫群落结构也发生了相应的改变,施肥土壤线虫群落的种类及数量与对照相比均呈下降的趋势;施肥能够显著增加土壤食细菌线虫的相对丰度,并对植物寄生线虫有明显的抑制作用,尤其是施用有机肥及NPK肥不仅能显著降低土壤中植物寄生线虫的数量,而且对植物寄生线虫种的多样性也有明显的抑制作用。
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 could be controlled significantly by long-term fertilizer managements,especially in soils of organic matter and NPK management treatments,the biodiversity of plant-parasites was controlled significantly too.
出处
《中国农学通报》
CSCD
北大核心
2011年第21期287-291,共5页
Chinese Agricultural Science Bulletin
基金
黑龙江省自然科学基金项目"长期施肥对黑土土壤线虫群落的调控"(C200905)
关键词
黑土
施肥
线虫群落
black soil
fertilizing
nematode community
