P. ostreatus and C. comatus could decrease the individual density of plant parasites, increase the the individual density of saprophytic nematodes.
毛头鬼伞、粗皮侧耳能有效降低植物寄生线虫的个体密度，提高腐生线虫的个体密度。
2
On the stem foots of wheat plant, more than 90% of the nematodes identified was saprophytic nematode, others were plant-parasitic nematode and predatory nematode.