my country's corn research ranks among the forefront of the world

Corn is one of the three major staple food crops in my country. In the past 10 years, the weight of corn in my country's food crop production has continued to increase. In 2006, the domestic corn planting scale and output surpassed wheat for the first time, ranking second in cereal crops, and its output is close to 30% of the total grain; in 2009, the corn planting area was 26.66 million hectares, surpassing rice for the first time; in 2012, the corn output increased. It also crossed rice and became the largest variety of food crops. A recent study by Li Chenying and his team from the Library and Information Research Center of China Agricultural University showed that, in keeping with the development of production, scientific research on corn in my country is also in the ascendant. The research shows the ten-year changes in academic research in my country’s corn field in terms of the number of articles published, the comprehensive impact indicator I3, and the number of high-level papers: Chinese researchers have achieved a leap in ten years; and the research strength of China Agricultural University is in this leap. In the performance score, out of color. "Scientific research is the basis for promoting industrial development, and large corn producing countries are often high-yield countries of corn research and academic papers." Li Chenying said in an interview with a reporter from "China Science News", "Scientific research is the basis for promoting industrial development." The purpose is to examine the academic influence of my country’s scientific research institutions and the country as a whole in the field of maize research." Li Chenying’s research uses Thomson Reuters’ WOS collection database as the basic data source and uses bibliometric methods to review 20,302 studies on maize published since 2005. Statistical analysis was carried out on the academic journal articles. The data shows that my country's corn research has become a leader in quantity and ranks among the forefront in quality. According to the statistics of the corresponding author's country, it can be seen that in the past 10 years, the number of papers in the United States has basically remained at 450 to 500; in 2005, the number of papers in my country was 62, and it has risen year after year, reaching 507 in 2014. In terms of ranking, the United States, which has a stable output of research articles, has been ranked first for a long time, and China has ranked second in terms of numbers for 6 consecutive years (except 2008) since 2006. In 2013, it began to "counter-attack" continuously. Two years ahead of the number of papers. It is worth mentioning that in addition to the number of papers, the frequency of citations, the number and proportion of high-level academic papers, and international cooperation and other common scientific research evaluation indicators, the study also selected the integrated impact indicator I3 (IntegratedImpactIndicator) for analysis. "This is a new scientific research impact evaluation index that is more applicable to a specific research field." Li Chenying introduced. Using this indicator to evaluate the quality of research articles, the United States has consistently ranked first; while the number of Chinese papers has grown rapidly, the gap in influence has been shrinking. And the comprehensive influence I3 shows a trend of steadily increasing. "From 2005 to May 2015, the data of the top ten countries as a whole and each year's comprehensive impact index shows that the future competition among countries in the corn research field will be mainly between China and the United States," Li Chenying analyzed, "This kind of Competition is no longer a competition of quantity, but a competition of the quality of papers." China Agricultural University’s corn research results are notably based on the completion of a national-level academic influence comparison. Li Chenying and his team also conducted an institutional level academic influence Metering. The study found that in recent years, the output of scientific research institutions in my country has increased rapidly. According to statistics, a total of 22 institutions were shortlisted for the annual number of publications. Among them, the Chinese Academy of Sciences and China Agricultural University ranked among them for 9 consecutive years, and the Chinese Academy of Agricultural Sciences and Sichuan Agricultural University were shortlisted 5 times and 2 times respectively. Among them, the transcripts of China Agricultural University are even more outstanding: First, since China Agricultural University entered the first echelon in the field of corn research in 2006, it has been in the top ten ranks, and the number of articles issued has remained stable since 2012. With more than 70 articles, it has ranked first in the world for three consecutive years; the second is that China Agricultural University's comprehensive influence index I3 in this field is second only to the Agricultural Research Service of the United States Department of Agriculture. The Agricultural Research Service of the U.S. Department of Agriculture and Iowa State University have been in the top ten for ten consecutive years; China Agricultural University has been on the list for nine times. In 2008, I3 jumped to second place, and began to surpass the U.S. Department of Agriculture in 2012. Bureau, but the overall level of the decade is still not as good as that. However, if you also examine the difference between high-level papers (i.e. 90% of the cited frequency percentile), the number of articles published, and the ranking of the comprehensive influence index I3, the China Agricultural University and the Agricultural Research Bureau of the United States Department of Agriculture and other institutions The comparison still needs to be further improved. In contrast, the performance of high-level papers by institutions such as the University of Minnesota, the University of Hohenheim, and the International Corn and Wheat Improvement Center is relatively more significant. "my country's scientific research institutions have made rapid progress in the number of publications, but there is still room for further improvement in high-level papers. In this regard, the gap between my country and the United States is even more obvious." Li Chenying wrote in the research report, she believes that this reminds my country's research It is necessary to strengthen high-level cooperation with top institutions in the United States, Canada, Germany, France and other countries. Behind the thesis data: the power of seeds So, what is the mystery of China Agricultural University's remarkable achievements in maize research in recent years? Further reading the statistical data, according to the institution of the school, the National Corn Improvement Center is the center of the China Agricultural University's corn genetic breeding research, and the center's researchers have brought more than one-third of the contribution to the above-mentioned "transcript". Since the 1950s, the research team led by Professor Li Jingxiong, an older generation of scientists in my country, has vigorously promoted research on the utilization of corn heterosis in China, which has promoted the selection and promotion of corn hybrids across the country, and has contributed to the increase in corn production and income in my country. Made a major contribution. After that, the innovative research team represented by Professor Dai Jingrui, Xu Qifeng and Song Tongming successively carried out work in the direction of resource innovation such as high-yield breeding and high-oil corn. In 1998, the Ministry of Agriculture relied on China Agricultural University to establish the National Corn Improvement Center. This generation of scientists Is the creator of the center. After the establishment of the Corn Center, the team led by Academician Dai Jingrui carried out the research and application of molecular breeding technology while carrying out group improvement, inbred line and hybrid breeding. With the goal of molecular marker-assisted breeding, they have successively explored molecular marker technologies such as RAPD, RFLP, and SSR for cluster analysis of breeding materials and division of heterosis groups, and carried out the construction of genome-wide linkage maps and molecules of important agronomic traits. Marker mapping research, and at the same time, has carried out in-depth research on the differential expression of maize genes, QTL for yield traits, the genetic basis of heterosis, and the prediction of heterosis. If the accumulation and release of innovative research results are the basic reason for the high output of the center's papers, then the high-yield research in recent years is also the inevitable result of the revival of talents in the corn center. On the second floor of the National Corn Improvement Center Building, there is a "pedigree map" of the research team of corn breeding-a research team with young and middle-aged as the main body has been formed. These researchers are also the authors of high-level papers on maize breeding: since 2005, among the papers published by China Agricultural University in C-N-S and NG journals, four of the papers mainly related to maize come from these young and middle-aged researchers. In the search in WOS, the corresponding author is the author group of "Highly Cited Papers" by researchers from China Agricultural University. The Corn Center team is also one of the several groups that appear more frequently. Multidisciplinary research around the industrial chain Li Chenying and his team's research also found that the advantages of scientific research institutions in the field of corn research are also formed by multiple departments with different disciplines in their institutions. Specific to China Agricultural University, the contribution of resources and environment disciplines is indispensable for the formation of its overall advantages. It can be understood from the statistical results of the research that in the past ten years of work, corn has been the basic and one of the most important objects in the research of the "Nutrient Resource Comprehensive Management Theory and Technical System" in the discipline of resources and environment. The Department of Resources and Environment of China Agricultural University is the birthplace of modern soil science and plant nutrition in China. Around 1992, they put forward the concept and research field of plant nutrition science, and it took 10 years to basically establish a theoretical system for plant nutrition research in my country and develop a large number of applied technologies. In 2004, researchers from the Department of Resources and Environment of China Agricultural University jointly completed the article "Partial Progress and Enlightenment of my country's Plant Nutrition Research in the Past Ten Years". Technical system is one of the important research directions of plant nutrition in my country in the future". This article may also be an entrance to understand the research of this subject-this not very long article is signed by more than 10 authors, "coincidentally", the search found that these scientific researchers are also in the China Agricultural University. The basic group of corresponding authors of "highly cited papers" in the academic field. It can be said that the "meeting" of resources and environment disciplines and crop genetics and breeding in the field of maize research is precisely the traditional disciplines of China Agricultural University starting from different research origins, focusing on the major national agricultural technology needs and international academic frontiers, and constantly moving forward. The epitome of research. "The biggest inspiration I got from my research is that the international influence and discourse power of research in the corn field does not depend solely on a certain discipline, but depends on the simultaneous development of research in corn-related disciplines," Li Chenying said. "Only when scientific research workers in the entire industry chain conduct joint research in all directions, can our research strength be truly improved."