农药减量防治番茄白粉病效果初报
刘媛 , 李喜红 , 沈雯 , 马景 , 李健荣 , 梁晓宇 , 田蓉蓉 , 王彦琪 , 迟永伟 , 吴平 , 杨旭峰
农业科学研究(中英文) ›› 2025, Vol. 46 ›› Issue (02) : 73 -76.
农药减量防治番茄白粉病效果初报
Preliminary Report on the Effect of Pesticide Reduction on Tomato Powdery Mildew
番茄白粉病是宁夏地区番茄上的主要病害之一,为兼顾防效与安全性,在其化学防治过程中加入农药减量助剂,可以实现减少农药用量的目的。选择43%氟菌·肟菌酯悬浮剂、30%肟菌·乙嘧酚悬浮剂、29%吡萘·嘧菌酯悬浮剂3 种化学农药和1 种农药减量助剂(奇功),设5 个药剂处理、1 个清水对照,采用茎叶喷雾法施药。结果表明:30%肟菌·乙嘧酚悬浮剂720 mL/hm2+奇功(农药减量助剂)225 mL/hm2和29%吡萘·嘧菌酯悬浮剂600 mL/hm2+奇功(农药减量助剂)225 mL/hm2的防效较高,第2 次施药后7、14 d的防效均达到95%以上,且农药减量20%的处理较对照增产29%和29.3%。建议生产中防治番茄白粉病时应用上述2 种处理,并交替使用,以实现达到防病和农药减量的效果。
Tomato Powdery mildew is one of the main diseases of tomato in Ningxia region. The purpose of this experimental study is to add pesticide reducing agents to the chemical control process while ensuring the effectiveness of prevention, in order to achieve the goal of reducing pesticide usage. Three kinds of chemical pesticides and one kind of pesticide reducing additive were selected in the experiment, including 43% fluopyram·trifloxystrobin strobin suspension, 30% trifloxystrobin·ethirimol SC 29% isopyrazam·azoxystrobin SC, 1 water control, the use of stem and leaf spraying method.The experimental results showed that the control effects of 30% trifloxystrobin·ethirimol SC 720 mL/hm2 pesticide reducing agent Qigong (pesticide reduction additive) 225 mL/hm2 and 29% isopyrazam·azoxystrobin SC 600 mL/hm2 pesticide reducing agent Qigong (pesticide reduction additive) 225 mL/hm2 were relatively high, reaching over 95% 7 and 14 days after the second application, and the treatment with 20% pesticide reduction increased production by 29% and 29.3% compared to the control. It is suggested that the above two treatments should be used alternately to control tomato Powdery mildew in production to achieve the effect of disease prevention and reduction.
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