摘要
应用地统计学方法研究了南疆阿瓦提棉区的棉蚜及瓢虫的空间分布格局及其时序动态耦合规律，结果表明：大尺度下：棉蚜变程范围在6．60-24．60m，平均12．07m；块金／基台盛发期范围8．35％-49．98％，消退期在6．63％-13．90％；小尺度下：棉蚜变程范围在1．37-14．76m，平均3．525m；块金／基台范围盛发期1．32％-38．81％，消退期在0．21％-83．54％；通过种群动态分析、各向异性变异函数分析及普通克里格插值三维模拟分析，表明不同尺度下瓢虫与棉蚜有着比较典型的追随关系，但小尺度下受随机因素干扰较多，种群变化曲线有一定程度的波动。
The spatial patterns and temporal dynamics of cotton aphid （Aphis gossypii Glover） and lady- bird in the south part of Awati county,Xinjiang,were studied by using geostatistics methods. The results showed：①The dependence range of cotton aphid was 7.8 m to 24.6 m under large scale,averaged with 12.07 m; the range of nugget/sill was 8.35% to 49.98% during the peak period, and was 6.63% to 13.90% during the regression period;②The dependence range of cotton aphid was 1.37 m to 14.76 m under small scale, the range of nugget/sill was 1.32% to 38.81% during the peak period, whereas it was 0.21% to 83.54% during the regression period;③By the analysis of population dynamics,anisotropic variogram and simulation of 3D Kriging interpolation,results distinctly indicated that there are typical following relationship between ladybird population and cotton aphid under different scales,but it seems that the affection by random factors is bigger under small scale than that of under large scale,the population curve exhibited fluctuation in a certain degree.
出处
《新疆农业大学学报》
CAS
2008年第1期36-42,共7页
Journal of Xinjiang Agricultural University
基金
新疆科技厅攻关项目(2001DA507A04-P04)
关键词
棉蚜
瓢虫
时空动态
地统计学分析
geostatistieal analysis
Aphis gossypii Glover
ladybird
temporal and spatial distribution
