利用CiteSpace软件从关键词聚类、合作网络、引文分析等多个角度,对Web of Science Core Collection数据库中2002—2023年发表的1146篇与根域限制有关的学术论文进行知识图谱分析,深入研究了植物根域限制领域的研究热点和发展趋势。结...利用CiteSpace软件从关键词聚类、合作网络、引文分析等多个角度,对Web of Science Core Collection数据库中2002—2023年发表的1146篇与根域限制有关的学术论文进行知识图谱分析,深入研究了植物根域限制领域的研究热点和发展趋势。结果显示:1)“根际”“群体”“定植”“基因表达”作为突现词的持续时间长,“干旱胁迫”“水分”“耐受力”为目前突现强度较高的突现词。2)根域限制在植物根际生态学、植物生长与发育及真菌和植物相互作用等领域意义重大。3)2002—2023年,相关文献发文量呈波动增长趋势。根域限制研究受多学科重视,其中植物科学与农学的文献占比达65%。美国发文量居首,其次是中国、巴西;中国突现强度排名第一。本研究涵盖了植物适应逆境的机制、植物与土壤相互作用、根腐病、土壤菌群等多个热点领域,旨在揭示当前植物根域限制研究的主要领域、关键问题以及未来可能的研究方向,为研究者提供参考和指导。展开更多
Bentonite is a very useful material for improving soil properties,which enhances the ability of plants to grow and produce in different conditions.The experiment was carried out in an agricultural nursery in one of th...Bentonite is a very useful material for improving soil properties,which enhances the ability of plants to grow and produce in different conditions.The experiment was carried out in an agricultural nursery in one of the areas of the City of Diwaniyah,in a house covered with green netting,with a shade rate of 25%,to study the effect of bentonite and humic acid on the growth and flowering of a Catharanthus roseus L.plant in sandy soil.The experiment included two factors:the first factor was bentonite clay,and the second factor was humic acid.Using a randomized complete block design(R.C.B.D)with three replications,data were analyzed using the analysis of variance(ANOVA)method,and comparison was made according to the least significant difference(L.S.D)test at a probability level of 0.05.The experiment consisted of adding bentonite clay at 0,2,6,and 8 g L-1,humic acid at 0,0.5,1,and 10 g L-1.The results showed that adding bentonite clay and humic acid to sandy soil can have a significant positive effect on the growth and flowering of the Catharanthus roseus plant grown in poor sandy soil conditions.Bentonite,clay and humic acid were added at concentrations of 8 and 10 g L-1,which led to an increase in plant height and number of leaves and leaf area.They reached 30.07,23.84 cm2,76.62,63.42 cm2 for leaf-1 and 24.73,20.22 cm2 for leaf-1,respectively.The results also showed an increase in the content of nitrogen(N),phosphorus(P),and potassium(K)in leaves by 2.27,1.92,1.99%and 1.51,1.22,1.77%.This also led to an increase in chlorophyll pigment and anthocyanin at the highest concentration and gave the highest value.Therefore,adding bentonite and humic acid together gave the highest values in vegetative and chemical characteristics,compared to treatments without addition.展开更多
为分析三角梅研究热点与趋势,采用文献计量学方法和CiteSpace可视化软件,以2003年1月至2023年12月中国知网和Web of Science核心数据库中三角梅相关文献为材料,分析比较中英文文献发文数量、学科分布、文献来源及合作情况、文献高被引...为分析三角梅研究热点与趋势,采用文献计量学方法和CiteSpace可视化软件,以2003年1月至2023年12月中国知网和Web of Science核心数据库中三角梅相关文献为材料,分析比较中英文文献发文数量、学科分布、文献来源及合作情况、文献高被引及共被引、高频关键词和演变趋势等特征。结果表明,2003年1月至2023年12月三角梅中文文献数量呈M形震荡上行趋势,英文文献数量整体呈J形增长趋势。三角梅中文发文机构集中在中国的华南和西南地区,但有向多地区扩展的趋势,合作不紧密;发文国家主要有印度、中国、墨西哥、巴基斯坦和美国等,合作有待进一步加深。中文三角梅研究主要侧重于农业领域,研究热点主要为三角梅品种、繁殖培育和园林应用等方面;英文研究方向趋于多元化,研究热点主要为抗炎、抗菌及抗氧化活性成分、甜菜色素和生物修复等方面。随着全球气候变化与可持续发展治理,预计三角梅的品种资源以及生物修复成为研究热点。展开更多
文摘利用CiteSpace软件从关键词聚类、合作网络、引文分析等多个角度,对Web of Science Core Collection数据库中2002—2023年发表的1146篇与根域限制有关的学术论文进行知识图谱分析,深入研究了植物根域限制领域的研究热点和发展趋势。结果显示:1)“根际”“群体”“定植”“基因表达”作为突现词的持续时间长,“干旱胁迫”“水分”“耐受力”为目前突现强度较高的突现词。2)根域限制在植物根际生态学、植物生长与发育及真菌和植物相互作用等领域意义重大。3)2002—2023年,相关文献发文量呈波动增长趋势。根域限制研究受多学科重视,其中植物科学与农学的文献占比达65%。美国发文量居首,其次是中国、巴西;中国突现强度排名第一。本研究涵盖了植物适应逆境的机制、植物与土壤相互作用、根腐病、土壤菌群等多个热点领域,旨在揭示当前植物根域限制研究的主要领域、关键问题以及未来可能的研究方向,为研究者提供参考和指导。
文摘Bentonite is a very useful material for improving soil properties,which enhances the ability of plants to grow and produce in different conditions.The experiment was carried out in an agricultural nursery in one of the areas of the City of Diwaniyah,in a house covered with green netting,with a shade rate of 25%,to study the effect of bentonite and humic acid on the growth and flowering of a Catharanthus roseus L.plant in sandy soil.The experiment included two factors:the first factor was bentonite clay,and the second factor was humic acid.Using a randomized complete block design(R.C.B.D)with three replications,data were analyzed using the analysis of variance(ANOVA)method,and comparison was made according to the least significant difference(L.S.D)test at a probability level of 0.05.The experiment consisted of adding bentonite clay at 0,2,6,and 8 g L-1,humic acid at 0,0.5,1,and 10 g L-1.The results showed that adding bentonite clay and humic acid to sandy soil can have a significant positive effect on the growth and flowering of the Catharanthus roseus plant grown in poor sandy soil conditions.Bentonite,clay and humic acid were added at concentrations of 8 and 10 g L-1,which led to an increase in plant height and number of leaves and leaf area.They reached 30.07,23.84 cm2,76.62,63.42 cm2 for leaf-1 and 24.73,20.22 cm2 for leaf-1,respectively.The results also showed an increase in the content of nitrogen(N),phosphorus(P),and potassium(K)in leaves by 2.27,1.92,1.99%and 1.51,1.22,1.77%.This also led to an increase in chlorophyll pigment and anthocyanin at the highest concentration and gave the highest value.Therefore,adding bentonite and humic acid together gave the highest values in vegetative and chemical characteristics,compared to treatments without addition.
文摘为分析三角梅研究热点与趋势,采用文献计量学方法和CiteSpace可视化软件,以2003年1月至2023年12月中国知网和Web of Science核心数据库中三角梅相关文献为材料,分析比较中英文文献发文数量、学科分布、文献来源及合作情况、文献高被引及共被引、高频关键词和演变趋势等特征。结果表明,2003年1月至2023年12月三角梅中文文献数量呈M形震荡上行趋势,英文文献数量整体呈J形增长趋势。三角梅中文发文机构集中在中国的华南和西南地区,但有向多地区扩展的趋势,合作不紧密;发文国家主要有印度、中国、墨西哥、巴基斯坦和美国等,合作有待进一步加深。中文三角梅研究主要侧重于农业领域,研究热点主要为三角梅品种、繁殖培育和园林应用等方面;英文研究方向趋于多元化,研究热点主要为抗炎、抗菌及抗氧化活性成分、甜菜色素和生物修复等方面。随着全球气候变化与可持续发展治理,预计三角梅的品种资源以及生物修复成为研究热点。
