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研究纵坑切梢小蠹Ｔｏｍｉｃｕｓｐｉｎｉｐｅｒｄａ的主要伴生菌Ｌｅｐｔｏｇｒａｐｈｉｕｍｗｉｎｇ－ｆｉｅｌｄｉ在六种温度下的生长力及对苏格兰松Ｐｉｎｕｓｓｙｌｖｅｓｔｒｉｓ的侵染力和致病力。在１０℃～２５℃范围内，Ｌ．ｗｉｎｇｆｉｅｌｄｉ随温度升高生长加快，而在３℃或３０℃下生长受到抑制。接种苏格兰松的前１０天表现出一定侵染力，但也诱发了树木的抗性反应，该反应抑制伴生菌的进一步扩张。在伴生菌较高密度接种下，寄主木质部有大量伴生菌、松脂分布，部分木质部也因失去水分而丧失正常功能，表明Ｌ．ｗｉｎｇｆｉｅｌｄｉ对苏格兰松有较强致病力。
To study the growth of Leptographium wing-fieldi, a major companion of Tomicus piniperda, at six temperatures and its infectivity and virulence to Pinus thunbergii Pinussylvestris. In the range of 10 ℃ ~ 25 ℃, L. Wingfieldi grew faster with increasing temperature, whereas growth was inhibited at 3 or 30 ° C. The first 10 days of inoculation of Scotch pine showed some infectivity, but also induced a tree-resistant reaction that inhibited further expansion of the companion bacteria. Inoculated with higher density of accompanying bacteria, the host xylem has a large number of associated bacteria, turpentine distribution, part of the xylem also lost due to loss of moisture and normal function, indicating L. Wingfieldi has a strong virulence on Scots pine.