It might be one of the reasons why BPH has a preference of feeding on leaf sheath aggregately from chemical point of view.
这也许是褐飞虱喜欢聚集在叶鞘部位取食的化学因素之一。
Females had a significant preference for laying their eggs and feeding on primary leaf to trifoliate leaf of field bean.
雌蝇在豆苗之真叶与复叶上产卵或取食时，均对豆苗之真叶具显著偏好性。
We examined the parameters of feeding area, the growth and the oviposition preference of DBM after setting the levels by the number and feeding time of SFB respectively.
试验按跳甲数量和跳甲取食时间设置级别，分别测试了小菜蛾取食面积、生长发育和产卵选择性等参数。
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