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长江下游中晚稻稻纵卷叶螟或将大发生
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长江下游中晚稻稻纵卷叶螟或将大发生
摘要:预计在9月中下旬,稻纵卷叶螟在长江下游迟播中稻及晚稻区将进入卵孵和低龄幼虫发生高峰期,大发生风险高。估计长江下游中晚稻稻纵卷叶螟或将大发生。南方大部稻区灯下蛾量偏高。长江下游中晚稻区出现持续蛾峰,峰期长、蛾量高。长江下游中晚稻区田间卵量同期激增。 据病虫害测报处9月公布信息,全国中晚稻稻纵卷叶螟发生形势总体平稳,但8月下旬中期以来,受成虫外地迁入、本地羽化和短距离转移等虫源叠加影响,长江下游稻区多地出现持续蛾峰,田间卵量激增,大发生态势明显。据悉,当前长江下游中稻、一季晚稻处于破口抽穗至乳...
Insecticides China News (Chinese version) 202109
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