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应用聚集度指标、Taylor的幂法则、Iwao的m*-m回归分析法,对茶小卷叶蛾幼虫空间格局进行了分析,并研究了茶小卷叶蛾幼虫在茶树上的序贯抽样技术。结果表明,茶小卷叶蛾幼虫在茶树上的空间分布属聚集分布,个体间相互吸引,分布的基本成分是个体群,其聚集性随密度的增大而增加。其聚集原因经Blackith种群聚集均数测定,当m<1.009 5时,其聚集是由外界环境条件所致;当m>1.009 5时,其聚集是由于害虫本身的群集行为与环境条件综合影响所致。在此基础上提出了最佳理论抽样数和最佳序贯抽样模型:N=1.962/D2[1.236 02/m+1.279 54],T0(n)=3.6 n±8.988 8 n1/2,最大样本数为n=234。
The clustering index, Taylor’s power law and Iwao’s m * -m regression analysis were used to analyze the spatial pattern of the larvae of the tea budworm, and the sequential sampling technique of tea budworm larvae was studied. The results showed that the spatial distribution of tea budworm larvae in the tea tree was clustered and distributed, and the individuals were attracted to each other. The basic components of the distribution were individual groups, and their aggregation increased with the increase of density. The aggregation reason was determined by the aggregation of Blackith population. When m <1.0095, the aggregation was caused by the external environmental conditions. When m> 1.0095, the aggregation was caused by the aggregation behavior of the pest itself and the environmental conditions To On this basis, the best theoretical sampling number and the best sequential sampling model are proposed: N = 1.962 / D2 [1.236 02 / m + 1.279 54], T0 (n) = 3.6 n ± 8.988 8 n1 / 2, The number is n = 234.