摘要
使用地学统计学的方法,对小麦红吸浆虫在较大空间尺度上的分布格局进行分析,建立半变异函数模型,发现其最佳拟合模型为线性有基台模型,模型的空间依赖范围为42.236 8 km,其自相关性和结构特征引起的种群变异为82.62%,说明模型具有较强的空间相关性。由试验结果推断,在小麦红吸浆虫大面积普查中抽样间距应该小于42 km。
Geostatistical method was used to analyze spatial pattern in large scale for the orange wheat midge Sitodiplosis mosellana. The semivariogram curve model was established. The results showed that line-model as the best model revealed the correlation distance was 42. 236 8 km, and orphological variations induced by autocorrelation and structure characteristics was 82.62%, indicating strong spatial correlation in the model. The result suggested that the sampling distance should be less than 42 km in the large scale investigation for wheat midge.
出处
《河南农业科学》
CSCD
北大核心
2010年第4期62-65,共4页
Journal of Henan Agricultural Sciences
基金
国家现代农业产业技术体系(nycytx-03)
