嗜硫小红卵菌 HNI-1 对辣椒病毒病的田间防效

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中图分类号 S436.418.1

文献标志码 A

文章编号 1007-7731（2026）08-0063-03

DOI号 10.16377/j.cnki.issn1007-7731.2026.08.015

Field control efficacy of Rhodovulum sulfidophilum HNI-1 against pepper viral diseases

Wu Ping 1 Cao Xuan 2

（ 1 Hunan Agricultural University， Changsha 410128， China; 2 Hunan Xinchangshan Agricultural Development Co.， Ltd.， Changde ， China）

Abstract To investigate the control efficacy of Rhodovulum sulfidophilum HNI-1 against pepper viral disease， a test was conducted using Changqinglong as the test pepper variety with 5 treatments： 2×108 CFU/mL Rhodovulum sulfidophilum HNI-1 SC at 50g/667m2 （treatment 1）， 100g/667m2 （treatment 2）， and 150g/667m2 （treatment 3）; 30% dufulin·moroxydine hydrochloride WP at 40g/667m2 （treatment 4）; and water control （CK）. The first and second applications were performed on November 14 and 21， 2024， respectively， and the disease index and control efficacy were measured at 7 days after the first and second applications. The results showed that at 7 days after the first application， treatment 3 had the lowest disease index （0.078） and the highest control efficacy （65.49%）， which was significantly better than treatment 1 and treatment 2 （ P<0.01） but showed no significant difference from treatment 4 （ P>0.05）; at 7 days after the second application， the disease index and control efficacy of treatment 3 were 0.107 and 67.18%， respectively， which were significantly superior to treatment 1 and treatment 2 （ P<0.01） with no significant difference from treatment 4 （ P>0.05）， and the control efficacy of Rhodovulum sulfidophilum HNI-1 against pepper viral disease showed an upward trend with the increase of concentration. In conclusion， 2×108 CFU/mL Rhodovulum sulfidophilum HNI-1 SC at 150g/667m2 exhibited a superior overall performance in controlling pepper viral disease， and this study provides a reference for the biological control of pepper virus disease.

Keywords Rhodovulum sulfidophilum HNI-1; pepper virus disease; biological control; control effect

辣椒是一种常见的蔬菜作物，也是重要调味料之一 [1] 。（剩余3837字）