| 田志慧1, 袁得军1, 2, 袁国徽1, 沈国辉1*.双环磺草酮·双唑草腈对杂草稻的生物活性及对水稻的安全性[J].植物保护,2020,46(5):229-234. |
| 双环磺草酮·双唑草腈对杂草稻的生物活性及对水稻的安全性 |
| Biological activity of benzobicyclon · pyraclonil against weedy rice and its safety to rice |
| 投稿时间：2020-02-14 |
| DOI：DOI: 10.16688/j.zwbh.2020075 |
| 中文关键词: 双环磺草酮·双唑草腈 杂草稻 生物活性 水稻安全性 |
| 英文关键词:benzobicyclon·pyraclonil weedy rice biological activity safety to rice |
| 基金项目:上海市现代农业水稻产业技术体系(202003)；上海市科技创新行动计划(16391901800)；上海市农业科学院卓越团队项目（农科创2018（B-01））; 上海市农业科学院学科创新专项［生科创-ZC2020（03）］ |
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| 中文摘要: |
| 为了明确10%双环磺草酮·双唑草腈GG对杂草稻的生物活性及对水稻的安全性, 采用盆栽法测定了10%双环磺草酮·双唑草腈GG不同剂量对不同叶龄杂草稻的生物活性和对不同秧龄移栽水稻的安全性。结果表明, 10%双环磺草酮·双唑草腈GG 1 500~4 500 g/hm2对萌芽期至3叶期的杂草稻有很高的活性, 且在4 500 g/hm2剂量下对15~25 d秧龄的移栽水稻生长无不良影响。但该药药效显现速度较慢, 一般在施药后3~4 周达到最佳防效。杂草稻萌芽期对该药剂最敏感, 随着杂草稻叶龄的增加使用剂量需相应提高。本着高效、经济、安全的原则, 防除杂草稻的最佳时期应在其萌芽期至2叶期, 推荐使用剂量杂草稻萌芽期为1 500~2 250 g/hm2、杂草稻立针期至2叶期为2 250~3 000 g/hm2。 |
| 英文摘要: |
| The purpose of this study is to determine the biological activity of benzobicyclon · pyraclonil 10% GG against weedy rice and of its safety to rice. By pot experiments, the biological activities of different dosages of benzobicyclon · pyraclonil 10% GG against weedy rice of different leaf stages and the safety for transplanted rice at different seedling stages were measured. At the dosages of 1 500-4 500 g/hm2, the benzobicyclon · pyraclonil 10% GG had an excellent biological activity against weedy rice from germination to three-leaf stage, and had no adverse effect on the growth of 15-day-old to 25-day-old transplanted rice at the 4 500 g/hm2. However, the efficacy of benzobicyclon · pyraclonil appeared slowly, and the best control effect was generally achieved 3-4 weeks after herbicide application. Weedy rice was the most sensitive to benzobicyclon · pyraclonil in the germination period, and the dosage should be increased with increasing leaf age of weedy rice. According to the principle of high efficiency, economy and safety, the optimal control period for weedy rice should be from its germination stage to two-leaf stage. The recommended dosage should be 1 500-2 250 g/hm2 at the germination stage of weedy rice and 2 250-3 000 g/hm2 from the needle leaf stage to the two-leaf stage of weedy rice. |
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