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关注：1
2013-05-23 12:21
求翻译：这3种放置密度均可有效控制烟田斜纹夜蛾的发生，减少农药使用，保护田间自然天敌，降低防治成本。是什么意思？ 待解决
 悬赏分：1
- 离问题结束还有
这3种放置密度均可有效控制烟田斜纹夜蛾的发生，减少农药使用，保护田间自然天敌，降低防治成本。
问题补充： |
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2013-05-23 12:21:38
Three kinds of placement density can be an effective control in tobacco fields litura, reducing pesticide use to protect the field of natural enemies to reduce the control cost.
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2013-05-23 12:23:18
This 3 place density are to be effective in controlling tobacco tin diagonal night moth, reduce pesticide use, and protection field natural enemies, and reduce cost control.
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2013-05-23 12:24:58
These 3 kind of laying aside density may the active control smoke field prodenia litura's occurrence, reduce the agricultural chemicals use, protects the field natural natural enemy, reduces the preventing and controlling cost.
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2013-05-23 12:26:38
The 3 types of placement density can be effective control of spodoptera litura in tobacco fields, reducing pesticide use, protection of natural enemies in field, lower control costs.
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2013-05-23 12:28:18
正在翻译，请等待...
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