关键词: 土壤线虫, 群落组成, 营养类群, 水分管理, 稻田

Abstract: The strategies of agroecological construction in arid regions are put forward based on the 40years′successful and faiture experiences of agricultural production in the typical arid Xin-jiang Uygur Autonomous Region.They are:regard drainage area as system boundary,set waterresources into rational use,build up water-economizing type agriculture,develope superioreconomic crops,build up an agroecosystem,make further advances in afforestation and grasscultivation and expand reproductive energy resources.These measures are basical to guaranteethe construction of a highly effective agroecological system with rational transformation ofenergy and matter flows.

Key words: Soil nematode, Community composition, Trophic group, Water management, Paddy field