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小麦重大病虫害发生动态及下阶段趋势预测
秋季拌种和适期晚播措施落实到位,有效压低病虫基数。 据统计,全国小麦秋播药剂拌种3.04亿亩,拌种率达96.3%、同比提高2个百分点。其中,黄淮、华北和西北麦区拌种率98.2%,小麦条锈病菌源区、茎基腐病和纹枯病重发区做到杜绝“白籽下地”、拌种全覆盖;江淮、长江中下游和西南麦区拌种率也在90%以上。此外,主产麦区推行适期晚播等栽培措施,对减轻苗期病虫发生也有一定作用。
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