节点文献
烟田莎草的空间分布型与抽样技术
Spatial distribution patterns and sampling techniques of Cyperus rotundus L. in tobacco fields
【摘要】 结果表明 ,烟田莎草呈明显的聚集分布 .利用有草样方频率和空间格局特征参数对烟田莎草种群密度进行估测 ,建立了相应的理论抽样数模型
【Abstract】 The results showed that the spatial distribution pattern of Cyperus rotundus L. in tobacco fields was obviously aggregative. The frequency of occurrence and the distribution parameters were used to estimate the population densities of the weed and establish the models of optimization map of the weed in tobacco fields.
【关键词】 烟田;
莎草;
空间分布型;
抽样技术;
【Key words】 tobacco field; Cyperus rotundus L.; spatial distribution pattern; sampling technique;
【Key words】 tobacco field; Cyperus rotundus L.; spatial distribution pattern; sampling technique;
【基金】 国家烟草局资助项目 (970 7)
- 【文献出处】 福建农林大学学报(自然科学版) ,Journal of Fujian Agricultural University(Natural Science) , 编辑部邮箱 ,2002年03期
- 【分类号】S451.2
- 【被引频次】2
- 【下载频次】37