Issue:ISSN 2095-1353
CN 11-6020/Q
Director:Chinese Academy of Sciences
Sponsored by:Chinese Society of Entomological;institute of zoology, chinese academy of sciences;
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2013年50 No.3
Sampling techniques for insects in the field
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Key Words： insect population, sampling method, sample size, collecting sample method
Abstract：
- The precision of estimating population size and forecasting the occurrence of insects is strongly determined by sampling techniques. A scientific and efficacious sampling program must consider three aspects: sampling design, sample size, and sampling method. There are many sampling designs, such as random sampling, stratified random sampling, multistage sampling, adaptive sampling, and systematic sampling, and the factors that determine which is suitable are population distribution pattern and crop species. The sample size is determined by the desired error and standard deviation or coefficient of variance. Sampling methods such as direct observation, portable suction devices, sweep nets, beating trays, and trapping methods are all used frequently. A suitable sampling method can be selected according to the criteria of precision, simplicity, and ease of application. In summary, the development of a sampling technique for insects in the field must consider not only precision, but also saving time and money.