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落叶松褐锈病Triphragmiopsis laricinum(chou)Tai是落叶松人工林和苗圃的重要病害,在黑龙江、吉林、辽宁等地广为流行。1986~1988年我们对东京城林业局、江山娇林场等地的部分落叶松人工林进行了调查,其发病率达60~100%,病情指数平均为30.7%,严重者达66.7%,严重地影响了树木的生长,为控制该病蔓延,我们对其发病规律进行了观察,并在垂病区进行了药剂防治,其结果如下。上、暗棕壤、透水性比较好的地段的林分,发
Triphragmiopsis laricinum (chou) Tai is an important disease of larch plantations and nurseries, and is widely prevalent in Heilongjiang, Jilin and Liaoning. From 1986 to 1988, we surveyed a part of Larix gmelinii plantations in Tokyo City Forestry Bureau, Jiaojiang Jiao Lin Field and other places, with a prevalence of 60-100%, a mean disease index of 30.7% and a severe case of 66.7% Affect the growth of trees, in order to control the spread of the disease, we observed the incidence of its law, and preventive medicine in the affected areas, the results are as follows. On the dark brown soil, water permeability is better in the lot of forest, hair