Some bats have even been utilised in pest control experiments, keeping boll moth Numbers down in cotton plantations.
一些蝙蝠甚至被用来做害虫控制实验，使棉花种植园里的棉铃虫数量呈减少的态势。
Generally, the total boll numbers of multi-stem cotton was significantly increased, but single boll weigh on average was lower.
综合来看，多茎株型单株成铃显著增加，但平均铃重较低。
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