The separation of the diseased wood has many other nematode speeies. This is the first reports about the P. taeda L. infected by B. xylophilus in natural environment since 1982 in Jiangsu province.
分离物中多混杂有其他线虫。这是江苏省自1982年发生松材线虫病以来首次关于火炬松自然感病的报道。
Remove diseased, dying or dead wood, then any stems that cut across each other: this improves air flow and lessens disease.
修剪去病枝、枯死的木质部，然后是互交的枝：目的是为了改善通风，减少疾病。
Remove diseased, dying or dead wood, then any stems that cut across each other: this improves air flow and lessens disease.
修剪去病枝、枯死的木质部，然后是互交的枝：目的是为了改善通风，减少疾病。
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