江苏农业学报2025，Vol.41Issue(10)：1936-1945,10.DOI:10.3969/j.issn.1000-4440.2025.10.007
外源植物生长调节剂对大豆玉米带状间作茎秆抗倒伏性状及产量的影响
Effects of different exogenous plant growth regulators on stem lodging re-sistance and yield in a soybean-maize strip intercropping system
摘要
Abstract
To explore the effects of different exogenous plant growth regulators on stem lodging resistance and yield in a maize-soybean strip intercropping system,a study was conducted using Jiangyu 877(maize)and Qihuang 34(soy-bean)under a"2+4"intercropping pattern.Three plant growth regulator treatments were set,namely ethephon at 700 mg/L(A),paclobutrazol at 100 mg/L(B),and a combination of ethephon at 700 mg/L+paclobutrazol at 100 mg/L(C),with water spraying as the control(CK),to study their effects on stem morphology,breaking resist-ance,and yield.The results showed that ethephon treat-ment significantly reduced maize plant height and ear height,increased internode stem diameter,and improved basal internode breaking resistance,but had no significant effect on the lodging resistance morphology of soybean stems.In contrast,paclobutrazol significantly enhanced soybean stem lodging-resistant morphology,but did not significantly impact maize lodging and related traits.The combined ethephon and paclobutrazol treatment integrated the advantages of both regulators.Compared to the control,the combined treatment signif-icantly reduced plant height in maize and soybean,increased the breaking resistance and stem density of both crops,and improved their yields.In conclusion,in a maize-soybean intercropping system,the combined ethephon and paclobutrazol treatment is more effective than single-regulator treatments in enhancing lodging resistance and increasing yields for both crops,which enhances crop lodging resistance,optimizes yield components,and ultimately leads to higher yields of both crops.关键词
植物生长调节剂/大豆玉米带状间作/抗倒伏/产量Key words
plant growth regulator/soybean-maize strip intercropping/lodging resistance/yield分类
农业科技引用本文复制引用
文廷刚,文章荣,蒋伟勤,宋佳敏,何佳伟,崔亚坤,陈华涛,刘廷武,顾大路..外源植物生长调节剂对大豆玉米带状间作茎秆抗倒伏性状及产量的影响[J].江苏农业学报,2025,41(10):1936-1945,10.基金项目
淮安市自然科学研究计划项目(HAB202245) （HAB202245）
淮安市农科院院长科研基金项目(HNY202304) （HNY202304）
