植物生长调节剂芸乐收对大麦主要农艺性状及产量的影响

Effect of Plant Growth Regulator Yunleshou on Main Agronomic Characters and Yield of Barley

通过在大麦分蘖盛期、孕穗期、扬花灌浆期喷施1~3次芸乐收(0.01%芸苔素内脂可溶性液剂10 mL+250 g/L吡唑醚菌酯乳油15 mL+BD助剂15 g),研究喷施芸乐收对冬大麦主要农艺性状和产量的影响。结果表明,喷施芸乐收对大麦产量构成因素具有促进作用,有效穗增加8万~24万/hm^(2),穗实粒数增加1.2~2.6粒,千粒重增加0.1~1.5 g,白粉病减轻1级;喷施芸乐收具有增产作用,比对照增产766.6~1099.9 kg/hm^(2),增加11.9%~17.0%,增收1260.0~1510.2元/hm^(2);增加产量与喷施次数呈正相关,投入产出比与喷施次数呈负相关;喷施一次时选择扬花灌浆期效果最佳,喷施2次时,分蘖盛期+扬花灌浆期组合最佳。

By spraying 1 to 3 times Yunleshou(0.01%brassinolide SL 10 mL+250 g/L pyraclostrobin EC 15 mL+BD additives 15 g)in the barley peak tillering period,booting stage and bloom filling stage,the effect of spraying Yunleshou on the main agronomic characteristics and yield of winter barley was studied.The results showed that spraying Yunleshou had a promoting effect on the yield components of barley.The effective ears increased by 80000 to 240000/hm^(2),the number of ears increased by 1.2 to 2.6,the thousand-grain weight increased by 0.1 to 1.5 g,and powdery mildew was reduced level 1.Spraying Yunleshou had the effect of increasing yield,which was an increase of 766.6-1099.9 kg/hm^(2),an increase of 11.9%-17.0%,and an increase of 1260-1510.2 yuan/hm^(2) compared with the control.The increase in yield and the number of sprays were positive correlation,the input-output ratio was negatively correlated with the number of spraying.When spraying once,the blooming grouting period had the best effect,and when spraying twice,the combination of tillering and blooming grouting period was the best.