【摘要】 为达到一次使用除草剂兼防胡麻田阔叶杂草与禾本科杂草,笔者开展了2甲·辛酰溴等3种新型阔叶杂草除草剂与高效氟吡甲禾灵等7种禾本科杂草除草剂混用苗期茎叶喷雾防除胡麻田杂草试验。结果表明:40%2甲·辛酰溴EC 1500 mL/hm2或30%辛酰溴苯腈EC 1500 mL/hm2与108 g/L高效氟吡甲禾灵EC 1500 mL/hm2等7种禾本科杂草除草剂混用对胡麻田阔叶杂草均具优良防效,株防效和鲜重防效在94.17%~98.71%之间。40%2甲·辛酰溴EC 1500 mL/hm2或30%辛酰溴苯腈EC 1500 mL/hm2、80%溴苯腈SP 600 g/hm2与108g/L高效氟吡甲禾灵EC 1500 mL/hm2或10%精喹禾灵EC 900 mL/hm2、50 g/L唑啉草酯EC 1350 mL/hm2、15%炔草酯WP 750 g/hm2混用对胡麻田禾本科杂草均具优良防效,株防效和鲜重防效在97.22%~100%之间。从安全性、兼防效果、用药成本和增产效果综合评价,40%2甲·辛酰溴EC 1500 mL/hm2或30%辛酰溴苯腈EC 1500 mL/hm2+108 g/L高效氟吡甲禾灵EC 1500 mL/hm2或10%精喹禾灵EC 900 mL/hm2是苗期茎叶喷雾一次用药兼防胡麻田阔叶杂草与禾本科杂草的最佳组合,宜在胡麻生产中大面积推广应用。更多还原

【Abstract】 To control broadleaf weeds and grass weeds in flax field by spraying at one time, the authors carriedout application test on 3 new types of broadleaf weeds herbicides including 40% MCPA-sodium andbromoxynil octanoate EC and 7 kinds of grass weeds herbicides including haloxyfop-P to control weeds in flaxfield by spraying on stems and leaves of flax seedling. The results showed that: 40% MCPA-sodium andbromoxynil octanoate EC 1500 mL/hm~2 or 30% bromoxynil octanoate EC 1500 mL/hm~2 mixed with 7 kinds ofgrass weeds herbicides including 108 g/L haloxyfop-P EC 1500 mL/hm~2 had excellent control effects onbroadleaf weeds in flax field, the plant and fresh weight control effects were between 94.17%-98.71%. 40%MCPA-sodium and bromoxynil octanoate EC 1500 mL/hm~2 or 30% bromoxynil octanoate EC 1500 mL/hm~2,80% bromoxynil SP 600 g/hm~2 mixed with 108 g/L haloxyfop-P EC 1500 mL//hm~2 or 10% quizalofop-ethyl EC900 mL/hm~2, 50 g/L pinoxaden EC 1350 mL/hm~2, 15% clodinafop-propargyl WP 750 g/hm~2 had excellentcontrol effects on grass weeds in flax field, the plant and fresh weight control effects were between 97.22%-100%. Comprehensive evaluation from safety on flax, control effect, herbicides cost and yield effect, 40%MCPA-sodium and bromoxynil octanoate EC 1500 mL/hm~2 or 30% bromoxynil octanoate EC 1500 mL/hm~2+108 g/L haloxyfop-P EC 1500 mL/hm~2 or 10% quizalofop-ethyl EC 900 mL/hm~2 are the best combination forcontrolling broadleaf weeds and grass weeds in flax field by spraying on stems and leaves of flax at one time,which should be popularized and applied in flax production.更多还原