关键词: 氮肥利用率, 氮肥利用率

Abstract: Abstract: in 2011, 2012 respectively in late may, of shanxi agricultural university forestry ecological experimental station countries HuaiLin large soil animals were investigated, 2011 capture large soil animals only 58 group 675, 2012 capture large soil animals 37 group a total of 210 only; Few groups 21, community individual number reduces the only 465; In 2011, a total of 40 special groups, the individual number the number of total capture 39.43%, 2012 special group for 19, the individual number accounts for 39.73% of the total number of capture, two years of specific groups individual number to total catches percentage close. Spring HuaiLin countries large soil animal community structure in different human management way influence is bigger, autumn, winter tillage soil will greatly improve the countries for the second year in a HuaiLin spring large soil animal community structure, group number and individual number dropped substantially, the planting trophic group reduced; Autumn, winter tillage soil can be used as a small area plantation underground pest control the important means to be widely used.