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我们曾测得越冬若虫和被害麦粒的比数:一个若虫平为重0.1毫克,而各个小麦品种的减产数为若虫的11倍.因此,有可能提出下面的方法,测定蓟马若虫为害所造成的损失.
We have measured the number of overwintering nymphs and kernels harvested: a nymphaea was weighing 0.1 milligrams and each wheat cultivar had 11 times the number of nymphs, so it is possible to propose the following method for the determination of thrips nymphs Caused by the loss.