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以陕南地区板栗林为对象,通过设立标准地进行部分抽样和完全抽样调查板栗疫病的发生和危害程度,积累2005—2008年板栗疫病相关数据。运用数量化理论Ⅰ对在陕南地区调查的25个板栗林样地进行分析,筛选影响板栗疫病发病率的重要因子及其影响程度。结果表明:坡向、先一年冬季降水量、先一年冬季极端最低温度和管理水平是影响板栗疫病发生的重要因素,其中坡向是最大影响因子。
Taking the chestnut forest in southern Shaanxi as an object, the chestnut blight incidence and the degree of harm were investigated by setting up a standard sampling and sampling completely, and accumulating the data of chestnut blight in 2005-2008. Using quantitative theory Ⅰ, we analyzed 25 chestnut forest plots surveyed in southern Shaanxi Province, and selected the important factors influencing the incidence of chestnut blight and their influence degree. The results show that the aspect, the first year of winter precipitation, the first year of winter extreme minimum temperature and the management level are the important factors that affect the occurrence of chestnut blight, of which the slope is the biggest impact factor.