南方粳稻稻曲病防治药剂及防治适期探讨
China Rice(2018)
Abstract
针对南方粳稻生产上危害日益严重的稻曲病,在大田重点开展了防治药剂筛选试验.结果表明,拿敌稳(病指防效为76.82%,下同)、爱苗(73.18%)、菌刀(69.21%)及头等功(68.54%)4个药剂防效相当,极显著优于阿米妙收(48.68%)、井冈霉素(49.01%)和好立克(42.05%)的防效,这4种药剂处理较对照增产4.38%~7.89%.破口前10 d、破口前3 d和齐穗后各施药1次的处理(S1)稻曲病病指防效显著优于破口前和齐穗后各施1次药的处理(S2)以及齐穗后施1次药的处理,实际产量差异达极显著水平;破口前和齐穗后各施1次药的处理与齐穗后施1次药的处理防效相当,实际产量差异不显著.
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