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1·Pest infestation also easily occurs, mainly rice weevil and corn weevil , etc.

害虫感染也易发生， 主要感染的害虫有米象和玉米象等。

2·The rice weevil is a good example of the high reproducibility of some grain insect species.

米象是一些谷物昆虫中繁殖能力强的典型。

3·The ecological implication of this life history strategy of rice water weevil was discussed.

文中讨论了双季稻区稻水象甲生活史对策的适应意义。

4·Recent years the occurrence area of rice water weevil is extending increasing with a certain law and harm character.

近几年，铁岭地区稻水象甲的发生面积呈逐年扩大趋势，并表现出一定的发生分布规律及危害特点。