Intense rainfall that frequently occurs in summer can alter soil water content,which is an important factor affecting the soil nematode.To investigate whether soil nematode the effect of the intense rain,two experiments were conducted.One was carried out in the field to simulate waterlogging,while the other was a laboratory experiment in which keep the soil samples submerged from one to four days.Soil nematodes were separated at different waterlogging time in both of the experiments.The results showed that in the field experiment,the density of soil nematodes first increased and then decreased with the soil water content decreasing,with a maximum when the soil water content was 21.8％.However,in the laboratory experiment,the abundance and richness of the nematodes were decreased with an increasing of the waterlogging duration.This indicated that the distribution of soil nematodes could be affected by waterlogging degree,and saturation of soil water content might induce the death of soil nematodes.Therefore,sampling in a heavy rain or water area was not recommended.
Soil nematodesSoil water contentWaterlogging degreeWaterlogging duration
NETL
NSTL
维普
万方数据
