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.
经初步识别，小麦茎基部的线虫中90%以上为腐生线虫，少数为植物寄生线虫和捕食线虫。
Rice-duck farming also had definite effects on the occurrence position and spatial domain of main predatory natural enemies on rice plant.
稻鸭共作对天敌在稻株中的发生部位和同域性也具有一定的影响。
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