论文部分内容阅读
近年,在广西博白林场的湿地松(Pinusellottii)、火炬松(P.taeda)、加勒比松(P.caribaea)南亚松 (P.tonkinensis及马尾松等松属树种,受台松副长蛎蚧Pa-rainsulaspis pitysophila(Takagi)不同程度的危害。它多寄生于一年生老叶上,靠针叶基部三分之一或叶鞘内、积个别在针叶中部吸取针叶水分与养料,轻者使针叶退绿,重者致针叶发黄,叶基边缘一侧开裂,针叶早落,影响林木的正常生长。以前只知
In recent years, Pinus phatii, P. taeda, P. caribaea and P. massoniana populations in Bobai Forest Farm in Guangxi Province, Pa-rainsulaspis pitysophila (Takagi) to varying degrees of harm.It parasitic parasitic on the annual old leaves, by the third base of the needle or leaf sheath, plot in the central part of the needle softwood water absorption and nutrients, the light of the needle Leaves degenerate green, heavy yellow hair caused by needles, leaf base edge of the side of the crack, needle early fall, affecting the normal growth of trees.