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| Bibliometric Analysis of Literature in Chinese Core Journals from 1999 to 2019 with Tomato as Research Topics and Hotspots |
| DU Ruopeng，KOU Yuantao，ZHU Liang* |
| Agricultural Information Institute of CAAS，Key Laboratory of Agricultural Big Data，Ministry of Agriculture and Rural Affairs，Beijing 100081，China |
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Abstract China is a big tomato producing country．Research on tomato occupies an important place in vegetable science research in China．Taking 7 190 tomato papers published in the journals of“Core Journals in Chinese” and “Chinese Science Citation Database，CSCD” from 1999 to 2019 and using Java and python programming languages，this paper carried out quantitative analysis on literatures，hoping to understand the hotspots and changing tendency of tomato research in China since entering the 21th century，so as to provide references for future research topic selection and management．Research results showed that in recent 20 years， the quantities of published papers on tomato maintained a large number and kept a stable status for 10 years following the rapid increase in the first 10 years． The literature cluster analysis obtained 13 research topics，covering：genetic breeding，cultivation physiology and technology，plant protection，storage and processing，etc．We found by analyzing high-frequency keywords that the heat of research activities related with“ gene”“growth and development”“yield”“quality” and“ greenhouse”，etc.，was persistant；and the heat of research related to“tomato yellow leaf curl virus”“chlorophyll”“seedling”“cherry tomato”“soil”，etc.，was remarkably increasing. While，research literatures related to“ physiology”“leaf mold”“preservation and freshness”“bacteria wilt”“ethylene”，etc.，were decreased. During the recent 10 years，there were about 100 core journals publishing over 400 papers on tomato every year.
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Received: 16 September 2020
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