中国稻米

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南方粳稻稻曲病防治药剂及防治适期探讨

  1. 1江西省农业技术推广总站,南昌 330046;2 余干县农业局,江西 余干 335100
  • 出版日期:2018-03-20 发布日期:2018-03-20
  • 通讯作者: 程飞虎
  • 基金资助:

    江西省农业厅“籼改粳”专项;公益性行业(农业)科研专项(201303102)

Study on the Control Pesticides and Optimum Period for Rice False Smut of Japonica Rice in South China

  • Online:2018-03-20 Published:2018-03-20

摘要:

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。

关键词: 粳稻;稻曲病;药剂, 防治时期

Abstract:

Field trial was carried out to screening pesticides of controlling rice false smut(RFS)(Ustilaginoidea virens)which was increasingly serious in japonica rice. The results showed that the control effects of Trifloxystrobin-Tebuconazole, Amur, Jingangmy-cin A and Hexaconazole were similar, but significantly higher than the control effects of Difenoconazole-Azoxystrobin, Jingangmy coin and Tebuconazole. Compared with the control, the yields of the 4 pesticides treatments were increased by 4.38%~7.89% respectively. The control effect of application pesticide 1 time each at 10 days before rupturing, 3 days before rupturing and after heading was significantly better than that of 1 time each before rupturing and after heading, and once after heading. There was significant difference in yield among the 3 treatments. The control effect of application pesticide 1 time each before rupturing and after heading was similar to application pesticide once after heading, but the difference of yield was not significant.

Key words: japonica rice, rice false smut, pesticide, control period

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