| 陈兆杰#, 黄璐璐#, 宋世明, 雷雨豪, 谭辉华, 李雪生*.两种除草剂对水葫芦和大薸的防除效果[J].植物保护,2018,44(2):221-226. |
| 两种除草剂对水葫芦和大薸的防除效果 |
| Control effect of two herbicides on water hyacinth and water lettuce |
| 投稿时间：2017-06-21 修订日期：2017-07-24 |
| DOI：10.16688/j.zwbh.2017235 |
| 中文关键词: 大薸 水葫芦 硝磺草酮 灭草松 防除 |
| 英文关键词:water lettuce water hyacinth mesotrione bentazone control |
| 基金项目:国家重点研发计划(2016YFD0201208-4); 广西农业环境与农产品安全重点实验室培育基地(桂科基字(2016)133号) |
|
| 摘要点击次数: 832 |
| 全文下载次数: 1082 |
| 中文摘要: |
| 采用枯叶指数、枯柄指数、新根抑制、鲜重防效等指标, 评价480 g/L灭草松水剂和10%硝磺草酮可分散油悬浮剂对水葫芦及大薸的防除效果。盆栽毒力测定结果表明, 10%硝磺草酮可分散油悬浮剂对水葫芦和大薸新根有很好的抑制作用, 药后10 d, LC50分别为14.22和7.21 mg/L; 480 g/L灭草松水剂对水葫芦和大薸鲜重的毒力较强, 药后10 d, LC50分别为548.22和3.49 mg/L; 药后20 d, LC50分别为53.28和3.31 mg/L; 而2种除草剂对水葫芦叶片、叶柄和大薸的叶片毒力均较低, 其中480 g/L灭草松水剂对水葫芦叶片和叶柄毒力优于10%硝磺草酮可分散油悬浮剂, 药后30 d LC50分别为94.40和93.43 mg/L; 对大薸叶片毒力较强的是10%硝磺草酮可分散油悬浮剂, 药后20 d LC50为165.07 mg/L, 在实际应用中, 为提高防治效果, 可适当提高剂量或进行混配处理。 |
| 英文摘要: |
| The control effect of water hyacinth and water lettuce by 10% mesotrione dispersed oil suspensions and 480 g/L bentazone aqueous solution were evaluated by withering leaf index, withering petiole index, and the inhibition to new roots and fresh weight. The result showed that mesotrione 10% OD showed high toxicity to both water hyacinth root and water lettuce root, with the LC50 values of 14.22 mg/L and 7.21 mg/L after 10 d treatment, respectively. Bentazone 480 g/L AS has relative high toxicity to fresh weight of water hyacinth and water lettuce, with the LC50 values of 548.22 and 3.49 mg/L after 10 d treatment and 53.28 and 3.31 mg/L after 20 d treatment, respectively. However, the toxicity of the two herbicides was relatively low to leaf and petiole. Bentazone 480 g/L AS had a higher toxicity to leaf and petiole of water hyacinth than mesotrione 10% OD, with the LC50 values of 94.40 and 93.43 mg/L, respectively, while mesotrione 10% OD had a higher toxicity to leaf of water lettuce, with the LC50 value of 165.07 mg/L. In practical application, in order to improve the control effect, the dosage can be appropriately increased or mixed with each other. |
| 查看全文 查看/发表评论 下载PDF阅读器 |
| 关闭 |
|
|
|
