梨树褐斑病拮抗菌Paenibacillus sp.Lzh-N1在生物有机肥中的应用OA

This study explored the control effect of bio-organic fertilizer containing Paenibacillus sp.Lzh-N1 on pear tree brown spot disease and its impact on fruit yield and quality through pot and field trials during 2021-2023.The results showed that applying the bio-organic fertilizer containing Paenibacillus sp.Lzh-N1 to pear seedlings in pot experiments reduced the incidence rate by 54.70%,decreased infected leaves by 60.58%,and significantly increased root biomass by 332%.Field experiments showed that the average single fruit weight increased by 7.01%,organic acid content decreased by 26.09%,solid content increased by 19.49%,total soluble sugar increased by 36.35%,fruit hardness decreased by 3.91%,pear yield increased by 22.02%,disease index of brown spot disease of pear decreased by 33.33%,and control effect on brown spot disease was 31.04%.Comprehensive analysis indicated that the bio-organic fertilizer containing Paenibacillus sp.Lzh-N1 can effectively prevent and control the occurrence of brown spot disease of pear,improve the quality and yield of pear,and have the advantages of non-toxicity,high efficiency and environmental friendliness.The study provides a scientific basis for green prevention and control of pear tree diseases and industrial development.