马建鹏, 杨宏波, 徐士忠, 金元峰, 杨晓开. 华山松疱锈病防治指标研究[J]. 西南林业大学学报, 1999, 19(4): 219-223. DOI: 10.11929/j.issn.2095-1914.1999.04.005
引用本文: 马建鹏, 杨宏波, 徐士忠, 金元峰, 杨晓开. 华山松疱锈病防治指标研究[J]. 西南林业大学学报, 1999, 19(4): 219-223. DOI: 10.11929/j.issn.2095-1914.1999.04.005
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MA Jian peng, YANG Hong bo, XU Shi zhong, JIN Yuan feng, YANG Xiao kai. An Index Research on Prevention and Treatment of Cronartium ribicola[J]. Journal of Southwest Forestry University, 1999, 19(4): 219-223. DOI: 10.11929/j.issn.2095-1914.1999.04.005
Citation: MA Jian peng, YANG Hong bo, XU Shi zhong, JIN Yuan feng, YANG Xiao kai. An Index Research on Prevention and Treatment of Cronartium ribicola[J]. Journal of Southwest Forestry University, 1999, 19(4): 219-223. DOI: 10.11929/j.issn.2095-1914.1999.04.005
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华山松疱锈病防治指标研究

An Index Research on Prevention and Treatment of Cronartium ribicola

    摘要
  • 摘要: 对大理州疱锈病严重发生的华山松,采用均匀分布的典型整群抽样调查和树干解析方法,确定了病级与树高、径级和材积的平均生长量、损失量和损失率,各病情指数(x)的损失量、损失率(y)的相关数律,推导出华山松疱锈病损失率、经济阈值和防治指标的估测模型.

     

    Abstract: Applying the well-distributed statistic sample survey and tree trunk analysis method, this paper makes a research into the seriousness of Cronartium ribicola Fischer in the Pinus armandii forests in Dali.It defines the disease grade, growth capacity, loss amount and loss rate, as wall as the related index laws of each disease index number(x)for its loss capacity(y), thus inferring the loss rate of Cronartium ribicola,economic value and the estimated model of prevention and treatment indexes.

     

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