摘要
1981～1991年花生网斑病(Phoma arachidicola)的发生程度各年度间与生育日数均达到极显著正相关关系;与气温有两年达到显著正相关关系;与相对湿度呈不显著的正相关关系;与降雨均为负相关关系;年度间各因子与发病的直接效应分别为:生育日数,3年直接效应依次为:0.7369、0.9934和1.1742;气温直接效应为:0.1213、-0.1140和-0.3188;降雨直接效应为-0.2777、-0.0351和0.0311;相对湿度直接效应为:0.1825、-0.0737和-0.0332。3年统算网斑病的发生与生育日数和气温均呈极显著正相关关系,相关系数为0.7073和0.4340;与相对温度呈显著正相关,相关系数为0.3159;与降雨呈负相关,相关系数为-0.0296;直接效应依次为生育日数0.6471>相对湿度0.1229>气温0.0303。降雨则为-0.061 2,有抑制发病间接效应,多数因子通过生育日数对发病的效应最大。
Investigations in 1989-1991 revealed that the correlation of occurrence of peanut web blotch (Phoma arachidicola) with plant growing days was very significantly positive, with RH non-significantly positive, with rainfall negative, but with air temperature significantly positive only in 1990-1991. The direct contributions to the disease occurrence from growing days were 0.7369, 0.9934 and 1.1742, from atmospheric temperature 0.1213, -0.1140 and -0.3188, from rainfall -0.2777, -0.0351 and 0.0311, and from RH 0.1825, -0.0737 and -0.0332, respectively, in 1989-1990. Pooling the 3-yr data suggested that the occurrence of disease lesions was related to plant growing days and temperature being very significantly positive, r=0.7073 and 0.4740, to RH significantly positive, r=0.3159, to rainfall negative, r=-0.0296.
出处
《山东农业大学学报（自然科学版）》
CSCD
1992年第4期430-434,共5页
Journal of Shandong Agricultural University：Natural Science Edition
关键词
花生
网斑病
发病因子
peanut
web blotch
disease factor
effect
