哈茨木霉拌种对大豆生长及大豆根腐病的影响

Effects of Seed Dressing Treatment with Trichoderma harzianum on Soybean Growth and Root Rot Disease

为了明确哈茨木霉Th7拌种处理对大豆根腐病的防治及田间应用效果,为促进哈茨木霉拌种剂的推广应用奠定基础,于2020-2022年连续3年研究了Th7在大豆多年重茬地块应用对大豆根腐病的防治效果、大豆出苗率、生长情况和产量的影响。结果表明,Th7在大豆出苗后30 d对大豆根腐病的防治效果在37.51%~53.80%;在大豆出苗后60 d的防治效果在38.44%~43.28%;拌种处理大豆出苗率、单株荚数、单株粒数和百粒重均有提高;Th7拌种处理较不拌种处理产量提高3.27%~12.64%。说明,哈茨木霉Th7在提高大豆产量的同时,可以作为化学拌种剂的绿色替代产品用于大豆生产。

In order to clarify the control effect of Trichoderma harzianum Th7 seed dressing treatment on soybean root rot and field application,and provide basis for the promotion and application of T.harzianum Th7 seed dressing agent.This experiment studied the effect of T.harzianum Th7 on the occurrence of soybean root rot,the emergence rate,growth and yield of soybean from^(2)020 to 2022.The results showed that the control effect of T.harzianum Th7 on soybean root rot at 30 days after emergence was 37.51%-53.80%.The contr ol effect was 38.44%-43.28%at 60 days after emergence.The emergence rate,plant height,pod number per plant,seed number per plant and 100-seed weight of soybean were all increased.The yield of T.harzianum Th7 treatments was 3.27%-12.64%higher than that of non-seed dressing treatments.Therefore,T.harzianum Th7 can be used as a green substitute for chemical seed dressing agent in soybean production.