沈阳农业大学学报2025，Vol.56Issue(4)：24-32,9.DOI:10.3969/j.issn.1000-1700.2025.04.003
秸秆还田条件下喷施油菜素内酯对大豆产量的影响
Effect of Brassinolide Spraying on Soybean Yield under Straw Returning Conditions
摘要
Abstract
[Objective]Soybean is an important food and oil crop,and its demand is constantly increasing both domestically and internationally.As an environmentally friendly agricultural technology,straw returning is widely used in soybean planting in China.Brassinolide(BR)is a non-toxic plant growth regulator,which is of great significance for regulating crop growth.Therefore,experiments were carried out to study the effects of different concentrations of brassinolide on dry matter accumulation,yield and yield components of soybean at the initial flowering stage under the condition of straw returning,and to find the best application concentration.[Methods]Two soybean varieties of Heinong 84 and Kenfeng 16 with sub-limited podding habits were selected as experimental materials,and water was sprayed as the control group.Five concentrations(5,6.67,10,20,40 mg·L-1)of brassinolide were sprayed at the initial flowering stage of soybean.The dry matter accumulation of leaves,stems and petioles was measured at three stages of R2,R3 and R6.The plant height,bottom pod height,main stem node number,effective pod number,ineffective pod number,100-grain weight and yield were measured after harvest.[Results]After spraying 10 mg·L-1 brassinolide,the bottom pod height of Heinong 84 reached the lowest value of 15.76 cm,and that of Kenfeng 16 reached the lowest value of 16.03 cm.The effect of brassinolide on both varieties are significant.The number of invalid pods of Heinong 84 reached the minimum but the difference was not significant.The number of effective pods,total pods,theoretical 100-grain weight,actual 100-grain weight,theoretical yield,actual yield and kernel weight per plant reached the highest value and the difference was significant,increasing by 11.31%,43.66%,11.88%,13.58%,12.38%,15.95%and 14.27%,respectively.The plant height,theoretical 100-grain weight,actual 100-grain weight,theoretical yield,actual yield and kernel weight per plant of Kenfeng 16 reached the maximum,which increased by 11.41%,8.68%,8.84%,13.67%,12.48%and 15.77%,respectively.The dry matter accumulation of each part of the two varieties of soybean reached the highest value under 10 mg·L-1 brassinolide treatment.[Conclusion]The application of brassinolide can reduce the height of soybean bottom pods,increase soybean plant height,effective pods,total pods,dry matter accumulation in various parts above the ground,100-grain weight and yield,and 10 mg·L-1 is the best application concentration of brassinolide.关键词
大豆/秸秆还田/油菜素内酯/最佳施用浓度/产量构成因素Key words
soybean/straw returning/brassinolide/optimal application concentration/yield components分类
农业科技引用本文复制引用
董守坤,孙继轩,孙铭蔚,马玉玲,周欣宇,曲志鹏..秸秆还田条件下喷施油菜素内酯对大豆产量的影响[J].沈阳农业大学学报,2025,56(4):24-32,9.基金项目
国家重点研发计划项目(2024YFD1500303) （2024YFD1500303）
大学生SIPT项目(202410224166) （202410224166）
