北方农业学报2025，Vol.53Issue(5)：15-24,10.DOI:10.12190/j.issn.2096-1197.2025.05.02
河套灌区盐碱地带状复合种植对大豆生长发育及产量的影响
Effects of strip intercropping on soybean growth,development,and yield in saline-alkali land of Hetao Irrigation District
摘要
Abstract
[Objective]To clarify the effects of strip intercropping in saline-alkali land of the Hetao Irrigation District,Inner Mongolia,on soybean growth,development,and yield,thereby improving the utilization rate of saline-alkali cultivated land.[Methods]A maize-soybean strip intercropping experiment(4 rows of maize+4 rows of soybean)was conducted in Bayannur City,Inner Mongolia,from 2023 to 2024 using four soybean varieties—Heinong 81,Mengkedou 15,Mengkedou 25,and Suinong 71(180 000 plants/hm2)to analyze the variation patterns of agronomic traits,photosynthate production capacity,quality,and yield among different soybean varieties under saline-alkali land strip intercropping conditions,aiming to determine the effects of strip intercropping in saline-alkali land on soybean growth and development.[Results]Over the two years,Mengkedou 15 exhibited the highest plant height(107.50 and 104.77 cm,respectively),was significantly higher than that of the other varieties(P<0.05);the lowest pod height was the shortest(11.33 and 11.58 cm,respectively),was significantly lower than that of the other varieties(P<0.05);the effective pod number per plant was the highest(15.24 and 15.85 pods,respectively).Over the two years,leaf SPAD values of the different soybean varieties gradually increased as the soybean growth stage progressed,reaching their maximum at the full seed to full maturity stage,with Mengkedou 15 being significantly higher than the other varieties(P<0.05),measuring 42.83 and 43.23,respectively.The leaf area index showed a pattern of first increasing and then decreasing as the growth stage progressed,reaching its maximum at the full seed(R6)stage,with Mengkedou 15 significantly higher than the others(P<0.05),measuring 3.31 and 3.41,respectively.Dry matter accumulation gradually increased as the growth stage advanced,peaking at the full maturity(R8)stage,with Mengkedou 15 being significantly higher than the others(P<0.05),measuring 940.21 and 945.37 g/m2,respectively.Suinong 71 had the highest protein content(39.98%and 40.21%).Mengkedou 15 had the highest fat content(22.58%and 22.67%)and total protein and fat content(58.73%and 58.26%).Soybean yield was highest for Mengkedou 15(1.53 and 1.59 t/hm2,respectively).Correlation analysis showed that soybean yield was highly significantly positively correlated with SPAD value and dry matter accumulation(P<0.01),with correlation coefficients of 0.97 and 0.96,respectively,and significantly negatively correlated with the lowest pod height(P<0.05),with a correlation coefficient of-0.87.[Conclusion]Strip intercropping in saline-alkali land of the Hetao Irrigation District significantly affects soybean SPAD value and dry matter accumulation,consequently affecting soybean yield.Among the tested varieties,Mengkedou 15 showed the best performance in agronomic traits and yield and is suitable for maize-soybean strip intercropping in this region.关键词
河套灌区/盐碱地/带状复合种植/大豆/农艺性状/品质/产量Key words
Hetao Irrigation District/Saline-alkali land/Strip intercropping/Soybean/Agronomic traits/Quality/Yield分类
农业科技引用本文复制引用
赵晓宇,李强,刘坤雨,高圆丽,王雪娇,杜二小,吴娟,李玮,董宇恒,苏二虎..河套灌区盐碱地带状复合种植对大豆生长发育及产量的影响[J].北方农业学报,2025,53(5):15-24,10.基金项目
国家科技创新重大项目(2023ZD0403502) （2023ZD0403502）
国家重点研发计划项目(2023YFD2301804) （2023YFD2301804）
内蒙古自治区科技创新重大示范工程"揭榜挂帅"项目(2023JBGS0006) （2023JBGS0006）
内蒙古自治区水利科技专项(NSK202202) （NSK202202）
内蒙古自治区大豆现代农牧业产业技术体系(RO2400002797) （RO2400002797）
中央引导地方科技发展资金项目(2024ZY0136) （2024ZY0136）
内蒙古自治区农牧业科学院青年创新基金项目(2025QNJJN05,2025QNJJN03) （2025QNJJN05,2025QNJJN03）
