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探讨准确的抽样方法是进行田间药效考样和评估新农药药效的前提。茶尺蠖幼虫田间药效试验常用的方法有目测法和盆拍法。试验结果表明 :盆拍法由于人为因素较多 ,其结果与全群调查有明显的差异 ,不能反映田间实际情况 ;目测法由于人为因素干预少 ,不受理论抽样数的限制 ,省时省力 ,早晨 8∶ 0 0以前用目测法与全群调查没有显著的差异 ,能较客观地反映田间幼虫的实际情况 ,是进行田间药效考查和新农药田间药效试验较理想的抽样方法
To explore the accurate sampling method is a prerequisite for field efficacy test and evaluation of new pesticide efficacy. Tea scrofula larvae field efficacy tests commonly used methods are visual method and the pot beat method. The results showed that there are many man-made factors in the pot-patting method, and the results are obviously different from those in the whole population survey and can not reflect the actual situation in the field. Due to less human intervention, the visual method is not limited by the number of theoretical samples, Before 8: 00 in the morning, there was no significant difference with the whole population survey by visual inspection, which can more objectively reflect the actual situation of field larvae. It is a better sampling method for field efficacy test and field efficacy test of new pesticide