摘要
选用微生物药剂6%井冈霉素·枯草芽孢杆菌、植物生长调节剂0.136%赤·吲乙·芸苔和新型植物免疫激活蛋白0.4%大丽轮枝孢激活蛋白分别与常规化学药剂混用,对小麦进行拌种和两个关键生育期(拔节期和扬花期)叶面喷施,研究该防治方法和3种生物制剂对小麦茎基腐病的田间防治效果。处理1用6%井冈霉素·枯草芽孢杆菌与70%吡虫啉混合拌种,处理2、处理3分别将0.136%赤·吲乙·芸苔、0.4%大丽轮枝孢激活蛋白与常规药剂32%戊唑·吡虫啉混合拌种。苗期,处理1单株地下部分鲜重最大,处理2株高最高,处理3幼苗单株地上部分鲜重最高,分别为0.37 g、29.35 cm、4.39 g,比常规药剂处理和空白对照显著提高。拔节期和扬花期两次喷施药剂相同,灌浆期防治效果最高的是处理3,其次为处理2和处理1,分别为73.80%、69.52%和68.99%,显著高于常规药剂处理。增产率最高的同样是处理3,其次是处理2和处理1,分别为23.86%、23.12%和21.69%。3个处理对小麦均有促生和增产的作用,且对小麦茎基腐病有较好的防治效果,其中0.4%大丽轮枝孢激活蛋白与常规药剂混用在防治效果和产量上表现最佳,在防治小麦茎基腐病中具有较好的推广应用前景。
Microbial reagents such as validamycin·bacillus subtilis 6%,plant growth regulator gibberellic acid·indol-3-ylacetic acid·brassinolide 0.136% and new type plant immune-activating proteins Verticillium dahliae Aspf2 Like 0.4% were selected.These three agents were respectively mixed with or replace conventional chemical agents,and used for seed-dressing of wheat and foliar spraying at two key growth stages.This study aims to clarify the field efficacy of this control method and the three biological agents against wheat crown rot.During seeddressing:in Treatment 1,validamycin·bacillus subtilis 6% was mixed with imidacloprid 70% for seed dressing.In Treatments 2 and 3,gibberellic acid·indol-3-ylacetic acid·brassinolide 0.136% and Verticillium dahliae Asp-f2Like 0.4% were respectively mixed with the conventional agent tebuconazole·imidacloprid 32% for seed dressing.At the seedling stage,the fresh weight of the underground part per plant in Treatment 1 was the largest,the plant height in Treatment 2 was the highest,and the fresh weight of the above-ground part per plant in Treatment 3 was the highest,which were 0.37 g,29.35 cm,and 4.39 g respectively.All three were significantly higher than those of the conventional agent treatment and the blank control.Same agents were sprayed twice at the jointing stage and the flowering stage.In Treatment 1,only validamycin·bacillus subtilis 6% was used.In Treatments 2 and 3,gibberellic acid·indol-3-ylacetic acid·brassinolide 0.136% and Verticillium dahliae Asp-f2 Like 0.4% were respectively mixed with the conventional agent pyracostrobin· tebuconazole 30% for spraying.At the filling stage,the control effect was the highest in Treatment 3,followed by Treatments 2 and 1,which were 73.80%,69.52% and 68.99% respectively,significantly higher than that of the conventional agent treatment.The yield increase rate was also the highest in Treatment 3,followed by Treatments 2 and 1,which were 23.86%,23.12% and 21.69% respectively.Three treatments all had the effects of promoting growth and increasing yield on wheat,and had a good control effect on wheat crown rot.Among them,the mixture of Verticillium dahliae Asp-f2 Like 0.4% and the conventional agent performed the best in terms of control effect and yield,and has a good application and popularization prospect in the prevention and control of wheat basal rot.
作者
许玲
孟璇
郭立
李建达
赵书花
王祥会
赵艳丽
王佛
XU Ling;MENG Xuan;GUO Li;LI Jianda;ZHAO Shuhua;WANG Xianghui;ZHAO Yanli;WANG Fo(Zoucheng Agro-Tech Extension Center,Zoucheng 273500,China)
出处
《东北农业科学》
2025年第1期10-15,共6页
Journal of Northeast Agricultural Sciences
基金
山东省小麦产业技术体系项目(SDAIT-01-10)。
