4种除草剂防除麦田禾本科杂草效果及安全性

The Control Effect and Security of 4 Herbicides against Gramineal Weeds in Wheat Field

[方法]采用目测5级分级法,调查山东省麦田禾本科杂草种群的分布;在全省选有代表性的8个地点做4种除草剂田间药效试验;并测定对17个小麦品种的安全性。[结果]山东省麦田优势禾本科杂草为雀麦、看麦娘、硬草、节节麦、野燕麦、菵草等,各种杂草呈区域性分布;甲基二磺隆有良好的防效,氟唑磺隆对雀麦防效最高,但对节节麦无效;精唑禾草灵、炔草酸在稻茬麦田有良好的防效,对雀麦、节节麦无效;鲁麦14、徐麦29、济麦19、龙麦1号耐药性最强。

[Methods]The distribution of gramineal weeds populations in wheat field of shandong province were invested by using Visual Grade Rules.Eight representative locations were selected for field trial.And the safety on 17 wheat varieties was determined.[Results]The dominant varieties of gramineal weeds were Bromus japonicus Thunb.,Alopecurus aequalis sobol.,Paspalum sphondylodes Trin.ex Bge.,Aegilops squarrosa l.,Avena fatua l.,Beckmannia syzigachne（steud.）Fern.etc.,and all kinds of weeds showed a regional distribution.mesosulfuron-methyl provided good control effects,Flucarbazone-sodium showed the maximum control effect on Bromus japonicus Thunb.,but have not activity against Aegilops squarrosa l.,fenoxaprop-ethyl,clodinafop-propargyl provided good control effects in rice-wheat rotation field,but exhibited no activity against Bromus japonicus Thunb.,Aegilops squarrosa l.,lumai 14,Xunmai 29,Jimai 19,longmai 1 had the strongest drug resistance.