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本文拟合出了滇油杉(KeteleeriaevelynianaMast.)针叶量(y)与冠幅 (x)的最优回归模型lgy =3.2 70 9+0 .2 172lgx +1.880 1lg2 x (R=0 .815 ) ,进行了滇油杉树冠级数表的研究和思茅松毛虫幼虫食叶量的测定 ,最后研制出了思茅松毛虫预测预报虫灾级数表。可为制定思茅松毛虫预测预报技术规程提供依据
In this paper, the best regression model lgy = 3.2 70 9 +0.2221lgx +1.880 1lg2x (R = 0.815) was obtained for the coniferous yam and crown width of KeteleeriaevelynianaMast. , Studied the Dian-guan canopy crown series table and Dendrolimus japonicus larvae to determine the amount of leaves, and finally developed a pine cedar slant forecast forecast worm stage table. It can provide the basis for making the technical regulation of forecast and prediction of pine caterpillar