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Impact of cropping system on earthworm community

耕作制度对蚯蚓群落的影响

基本信息

批准号：
21880051
负责人：
KANEDA Satoshi
金额：
$ 1.76万
依托单位：
National Institute for Agro-Environmental Sciences
依托单位国家：
日本
项目类别：
Grant-in-Aid for Research Activity Start-up
财政年份：
2009
资助国家：
日本
起止时间：
2009 至 2010
项目状态：
已结题

项目摘要

Earthworm, however, is important soil fauna in sustainable agricultural systems, still now impacts of cropping system on earthworm community are unknown in Japan. In this study, we tried to develop culturing and sampling methods of earthworm, and investigated impacts of cropping systems on earthworm community. Non-volcanic ash soils were better than volcanic ash soils for culturing Japanese native species. We can collect over 90% of earthworm biomass from 0 to 30cm soil depth. Earthworm biomass was high in no tillage system, but the biomass in organic farming system, in which there is no chemical fertilizer and pesticides application, was as low as the biomass in conventional farm.

然而，蚯蚓是可持续农业系统中重要的土壤动物，目前日本还不清楚耕作制度对蚯蚓群落的影响。本研究试图建立一套适合于不同种植制度的草地蝗虫的培养和采样方法，并探讨不同种植制度对草地蝗虫群落的影响。非火山灰土壤比火山灰土壤更适合栽培日本本土树种。在0 ~ 30 cm土层中，可以收集到90%以上的生物量。蚯蚓生物量在免耕系统中较高，而在不施用化肥和农药的有机耕作系统中，蚯蚓生物量与常规耕作系统一样低。