为明确生物农药与吡唑醚菌酯对小麦条锈病的防控及增产效果，通过温室盆栽试验和田间药效试验相结合的方法，测定了吡唑醚菌酯与武夷菌素、氨基寡糖素2种生物农药的混合配施对小麦条锈病的防治效果及其对小麦产量的影响。结果表明，与吡唑醚菌酯单剂处理相比，吡唑醚菌酯与2种生物农药的混合配施处理均表现出显著的协同增效作用，不仅对小麦条锈病具有一定的防治作用，同时显著提升了小麦千粒重及产量。其中，吡唑醚菌酯与氨基寡糖素按质量比5 ∶ 5(有效成分用量)混配时，其防控增产效果最佳，在温室盆栽试验中，防治效果达96.15%；在田间药效试验中，第1次施药后7 d、第2次施药后14 d的防治效果分别为86.03%、85.23%，同时显著提升了小麦的产量，产量增幅79.22%。表明氨基寡糖素与吡唑醚菌酯混配可显著降低吡唑醚菌酯的使用量，提高对小麦条锈病的防治效果，同时显著提高了小麦的产量。

To clarify the synergistic effects of biopesticides and pyraclostrobin on controlling wheat stripe rust (Puccinia striiformis f. sp. tritici) and enhancing crop yield, a combination of greenhouse pot experiments and field efficacy experiments were conducted to determine the control effects of pyraclostrobin combined with two biopesticides, wuyiencin and amino-oligosaccharide, on wheat stripe rust and their impacts on wheat yields. The findings indicated that the combined use of pyraclostrobin with either of the two biopesticides resulted in significant synergistic effects, surpassing the efficacy of pyraclostrobin applied alone. The treatments not only effectively controlled wheat stripe rust but also markedly enhanced wheat yield and important agronomic factors, including thousand-kernel weight and yield. The most notable control and yield-increasing effects were observed when pyraclostrobin and amino-oligosaccharide were mixed at a 5:5 mass ratio. This mixture achieved a control effect of 96.15% in greenhouse pot experiments. In the field efficacy experiment, the control effects were 86.03% and 85.23% at 7 and 14 days after applications, respectively. Additionally, the yield of wheat was significantly improved, with a yield increase of up to 79.22%. The study suggests that applying a mixture of amino-oligosaccharide and pyraclostrobin can drastically cut down the required amount of pyraclostrobin, enhance the control of wheat stripe rust, and markedly boost wheat yield.

S435.121.42

国家重点研发计划子课题(2021YFD1401004-02)；国家自然科学基金(32060596)。