The invention discloses a method for rapid propagation and separation of
pine wood nematodes. The method comprises the following steps: inoculating Sphaeropsis sapinea onto a PDA culture medium, carrying out culturing in an
incubator with a constant temperature of 26 DEG C for 5 days, and inoculating the
pine wood nematodes into culture dishes when the culture dishes are almost full of hyphae; uniformly spraying a proper amount of
sterile water onto the inner surfaces of culture dish covers, adding 5 to 10 ml of sterilized water after 4 days so as to flush the culture dish covers, collecting water obtained by flushing of the culture dish covers, and carrying out centrifuging so as to be able to obtain a great amount of
pine wood nematodes; after completion of collection, continuing spraying a proper amount of
sterile water onto the inner surface of the culture dishes uniformly, carrying out repeated culturing for 2 to 3 times, after completion of culturing, flushing the culture dish covers with
sterile water, collecting water obtained by flushing of the culture dish covers, and carrying out centrifuging so as to be able to obtain the pine wood nematodes; and
slicing the culture medium into small pieces at the same time, placing the small culture medium pieces into a Baermann funnel so as to separate the pine wood nematodes from the culture medium, placing the separated pine wood nematodes into a refrigerator with a temperature of 4 DEG C, and carrying out storage for subsequent usage. Compared with a traditional culturing method, the method provided by the invention can rapidly propagate a great amount of pine wood nematodes, has simple
separation method and can greatly save time.