Progress in researches on natural grassland diseases
Plant diseases are one of the key limiting factors for the productivity and sustainable develop-ment of grasslands. At present,much attention has been paid in China and abroad to plant diseases in cultivated grasslands represented by Medicago sativa,while the research related to natural grassland plant diseases is scarce,which obviously restricts the research and development of grassland plant dis-ease prevention and control technologies as well as the production practice. The article systematically reviews the types of plant diseases and their main host plants in natural grassland,and reveal the pattern of disease occurrence and development,as well as the influence of biotic and abiotic factors on the dis-eases. In addition,analyses of the role of plant diseases on the succession of natural grassland ecosys-tems are performed with emphasis on the influence of plant diseases on the productivity of the grassland and the structure of the plant community. The focus and direction of future research is outlined,and sug-gestions are made to synthesize ecological ideas to conduct in-depth research and focus on the research and development of green control technologies.
grassland and rangelanddiseaseinfluencing factorgrassland ecosystemdisease control