| 温广月1, 钱振官2, 李 涛2, 强 胜3, 宋小玲3*.氰氟草酯使用技术对双穗雀稗防除效果的影响[J].植物保护,2017,43(5):210-214. |
| 氰氟草酯使用技术对双穗雀稗防除效果的影响 |
| Effect of application technology of cyhalofop-butyl on Paspalum distichum control |
| 投稿时间：2016-08-07 修订日期：2016-10-16 |
| DOI： |
| 中文关键词: 杂草防除 双穗雀稗 除草剂应用 氰氟草酯 |
| 英文关键词:weed control Paspalum distichum herbicide application cyhalofop-butyl |
| 基金项目:上海市市级农口系统青年人才成长计划（沪农青字（2015）第1-20号） |
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| 中文摘要: |
| 为明确氰氟草酯防除双穗雀稗的最佳使用技术,采用室内试验和田间试验相结合的方法,明确氰氟草酯在不同施药情况下对双穗雀稗的防除效果。室内试验结果表明，氰氟草酯对双穗雀稗具有较好的防除效果，LD50为有效剂量26.15 g/hm2; 田间试验结果表明，在全株受药情况下，施用10%氰氟草酯乳油有效剂量90~270 g/hm2对苗期至营养生长盛期双穗雀稗均具有较好的防除效果，防除效果接近100%。室内和田间不均匀施药试验结果表明，双穗雀稗喷施氰氟草酯部分防除效果较理想，未施药部分防除效果随着施药部分剂量的增加而增加。总体来讲，施药不均匀是导致防除效果波动的一个主要原因。在施药均匀、全株施药的情况下，10%氰氟草酯乳油有效剂量90 g/hm2对双穗雀稗具有很好的防除效果，在不能保证均匀全株受药的情况下，10%氰氟草酯乳油防除双穗雀稗的使用剂量应该提高到有效剂量270 g/hm2。 |
| 英文摘要: |
| To clarify the control efficacy of cyhalofop-butyl on Paspalum distichum, laboratory experiments and field trials were carried out under different treatment conditions. Laboratory experiment results indicated that cyhalofop-butyl presented good control effect on P.distichum with the LD50 values of 26.15 g/hm2 effective dosage. Field trials demonstrated that from seedling stage to vegetative growth peak stage, spraying of herbicide on whole plant at effective dosage of 90 to 270 g/hm2 had approximate 100% control effect. Non-uniform application in both laboratory and field showed good control efficacy in sprayed area, but control effect in non-sprayed area is dose-dependent. In general, non-uniform application was one of the main reasons for control efficacy decreasing. 10% cyhalofop-butyl EC with the effective dosage of 90 g/hm2 would achieve significant control effect on P.distichum under uniform spray on the whole plants, while the dosage should be increased to 270 g/hm2 when proper spraying can not be guaranteed. |
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