关键词: 水稻土, 土壤线虫, 配施有机肥

Abstract: The paper reported the results of avian survey in the mangrove wetland of Dongzhaigang from 1997 to 1998.It showed that 78 species of birds were recorded,and belong to 12 orders 26 families.Of these birds,35 species and 43 species were migratory birds and resident birds respectively. 9 species were secone class nationaly protected birds;32 species were on the list of China-Japan Agreement for Protection of Migratory Birds;14 species were on the list of China Australia Agreement for Protection of Migratory Birds.The number of bird species varied with seasons.The trends were winter>autumn>spring>summer on upland,respectively.The avian diversity index and evenness index were greater on upland than on mudflat in summer.The avian diversity index was greater and the avian evenness index was less on mudflat than on upland in autumn.The avian diversity index and evenness index were greater on mudflat than upland in winter.

Key words: paddy soil, soil nematode, combined application of chemical fertilizer and organic manure.