双氟·滴辛酯对冬小麦产量和品质的影响

Effects of 2,4-D 2-Ethylhexyl Ester·Florasulam on Yield and Quality of Winter Wheat

为探讨双氟·滴辛酯对小麦产量和品质的影响,达到合理使用除草剂防除田间杂草和增加子粒产量的目的,以济麦22为试验材料,设置0(对照)、225、450、675、900mL/hm^2剂量双氟·滴辛酯处理,在大田条件下研究双氟·滴辛酯对冬小麦阔叶杂草防效、子粒灌浆速率、产量及其构成因素、子粒品质的影响;在盆栽条件下,研究双氟·滴辛酯(0、1.17、2.33、3.50、4.67μL/盆)对小麦子粒品质的影响。结果表明,与对照相比,双氟·滴辛酯处理的小麦阔叶杂草防效均出现不同程度的升高,除草剂对小麦阔叶杂草防效随着施药剂量的增加而升高,且表现出一定的剂量-效应关系。与对照相比,子粒灌浆速率、产量及构成因素、品质随双氟·滴辛酯剂量的增加呈先增后降的趋势。450mL/hm^2双氟·滴辛酯为生产企业的推荐剂量;从减药方面来讲,如果杂草发生较少,建议施用225mL/hm^2剂量双氟·滴辛酯;如果小麦田间杂草数量过多建议施用675mL/hm^2剂量双氟·滴辛酯。

In order to optimize herbicide dosage and to increase grain yield of winter wheat, a field experiment and a pot experiment were conducted using Jimai 22 as material to investigate the effects of 2,4-D 2-ethylhexyl ester · florasulam on the yield and quality of grain. Four herbicide dosage treatments （225, 450, 675, 900mL/hm2） with a water control were set up to study the effects of different dosages of 2,4-D 2-ethylhexyl ester · florasulam on winter wheat broadleaf weed, filling rate and yield in field experiment. Four herbicide dosage treatments （0, 1.17, 2.33, 3.50, 4.67pL/pot） with a water control to study its effect on grain quality in a pot experiment. The results showed that different dosages of 2,4-D 2-ethylhexyl ester · florasulam had significant effects on broadleaf weed control compared to the control, and the effect increased with the increase of herbicide dosage, showing some dose-effect relationship. Compared with the control, wheat grain filling rate, yield and yield components increased first and then decreased with the increase of the herbicide dosage. Although 450mL/hm2 of 2,4-D 2-ethylhexyl ester.florasulam is recommended by the manufacture company, 225mL/hm2 should be used if the weed are less, however 675mL/hm2 should be used if weeds are more.