Abstract:

The paper aims to understand the research progress of continuous cropping obstacles in recent years in China. Based on the publication of relevant articles in CNKI from 1989 to 2018, this paper analyzed the age, journals, institutes, funds, authors, objects and topics of these articles by bibliometrics, and used CiteSpace V software to establish a knowledge mapping of keywords. The results showed that: the number of articles was positively correlated with the annual variation; a total of 2678 articles were funded by various funds, accounting for 42.28% of the total amount of articles, among them, the National Natural Science Foundation of China supported the largest number; these articles were mainly published in agricultural journals, and the research institutes were mainly agricultural and forestry universities and research institutes; Mao Z Q, Xu Y L and Han X Z were the main authors who made more achievements in this field; the main research objects were grain crops, vegetable crops, fruits (trees), cash crops and medicinal plants; the research hotspots mainly focused on the soil microorganism, soil enzyme, soil-borne diseases, allelopathic autotoxicity, autotoxic effect and other aspects, and a scientific research team was formed with Han L M, and Zhang C Y as the core. Nowadays, more and more scholars begin to devote themselves to the study of continuous cropping obstacles in China, and the level of scientific research and academic influence in this field have been greatly improved compared with before. However, there is still much room for development in many fields of crop continuous cropping obstacles research in China. Based on the perspective of soil micro-ecological environment change, exploring the mechanism of prevention and control of continuous cropping obstacles is the main direction of future research.

Key words: Continuous Cropping Obstacle, Bibliometrics, Knowledge Mapping, CiteSpace, Research Focus