Twenty seven turf samples in Nanjing city were surveyed with line intercept method for weed species during summer and the data obtained were analyzed with cluster analysis. 用样线法调查了南京市绿色草坪共27个样点的杂草发生及分布情况,并用系统聚类法分析比较了各草坪杂草群落的发生及分布特点。
Results: The correct rate of related knowledge, concept and behaviors of GH patients had been surveyed on basal line was generally lower. However, it was universally promoted after health education. [结果]基线调查GH病人疾病相关知识、观念和行为的正确率较低,健康教育后正确率提高。
The bird resources of Youxi County were surveyed by using the method of mechanical dotting, plot sampling and line transects. 在福建省尤溪县采用机械布点、网格取样、逐格调查的方法以县为总体进行了鸟类资源调查。
A cohort of 1160 workers of a factory in Jianyang city was surveyed at base line and followed up in one year. 方法抽取简阳市某厂1160名职工为研究对象,进行基线调查和一年后随访。