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油松、华山松为我省造林的主要树种。几年来幼苗多受立枯病为害,死亡严重。各地已有许多防治轻验,为了进一步总结研究,我们采用几种措施,比较其防治效果,从而寻求有效的防治方法,为确保苗木丰产提供依据。油松、华山松防病试验面积共计0.5亩,土壤为轻粘土,酸(?)度7.3。基肥亩施人粪尿2万斤,追肥两次。播种前用几种药剂进行土壤消毒。3月21—23日播种。播种量:油松每亩50斤,华山松每亩100斤。播种后复砂盖草。松苗
Pinus tabulaeformis, Pinus armandi is the main afforestation species in our province. In recent years, the seedlings are more affected by the blight and cause serious death. In order to further summarize the research, we have adopted several measures to compare the effectiveness of prevention and treatment, so as to seek effective prevention and cure methods and provide the basis for ensuring seedling yield. Pinus tabulaeformis, Huashan pine disease test area of a total of 0.5 acres, the soil is light clay, acid (?) 7.3 degrees. Mushi base fertilizer manure urine 2 kg, topdressing twice. Soil disinfecting with several agents prior to sowing. March 21-23 seeding. Sowing rate: 50 kg pine per acre, Huashan pine 100 kg per mu. Sowing after the sand cover grass. Pine seedlings