运用倒置“W”9点取样法，对黑龙江省北部大豆小麦轮作区小麦田做杂草调查。
Wheat field weed survey was conducted using an inverted W-pattern with 9 sampling points in the north region of Heilongjiang province.
通过系统取样的样线法调查整个研究区域环境变量的特征。
Line transects of systematic sampling were used to survey the fundamental characteristics of the environmental variables in the study area.
采用倒置“W”取样法对河北省玉米田杂草进行了调查，以明确田间杂草的种类组成及群落结构。
Weed survey was conducted by sampling methods of inverted W-pattern to determine the species composition and structure of weed communities in maize fields in Hebei Province.
方法采用分层多阶段随机抽样法，获取样本。并采取问卷的形式进行调查。
Methods Multistage sampling and stratified sampling were used and information was gathered by interview with questionnaires.
通过五点取样法，对病虫害进行分级和定点定株调查。
The investigation was made by sampling in five locations for diseases and pests.
方法问卷法、跨文化比较法及随机抽样调查，按各村18岁至45岁人口比例抽取样本。
Methods Applying answering questionnaires, contrasting cross culture and getting the sample at random. Then we chose each village came from 18 to 45 year-old sample.
方法自行设计调查问卷，采用方便取样法，调查180名老年患者照顾者的一般情况、口服用药护理知识及行为。
Methods General conditions, knowledge about oral drugs and behaviors of 180 caretakers of elderly patients were investigated by random sampling with questionnaires designed by ourselves.
方法自行设计调查问卷，采用方便取样法，调查180名老年患者照顾者的一般情况、口服用药护理知识及行为。
Methods General conditions, knowledge about oral drugs and behaviors of 180 caretakers of elderly patients were investigated by random sampling with questionnaires designed by ourselves.
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