中国农业科学2025，Vol.58Issue(14)：2782-2792,11.DOI:10.3864/j.issn.0578-1752.2025.14.006
河西走廊作物种植结构对棉铃虫成虫寄主类型形成的影响
Effect of Crop Planting Structure on Formation of Natal Host Types of Helicoverpa armigera Moths in Hexi Corridor
摘要
Abstract
[Objective]The objective of this study is to clarify the effect of crop planting structure on formation of natal host types of bollworm(Helicoverpa armigera)moths,and to construct a regional integrated green prevention and control system in Hexi Corridor.[Method]A number of H.armigera moths were collected by sex pheromone traps and δ13C(13C/12C)value of one forewing of each H.armigera moth was determined by stable carbon isotope ratio method in Hexi Corridor from 2021 to 2023.[Result]Under 1﹕1,1﹕2 and 1﹕3 planting structure patterns of vegetables/maize in Hexi Corridor,25.00%,26.19%and 3.61%of the first generation moths were originated from C3 vegetables and 75.00%,73.81%and 96.39%of the first generation moths were originated from C4 maize,the average δ13C(13C/12C)values were-26.28‰,-26.81‰,-23.20‰,-12.56‰,-13.48‰ and-12.82‰,respectively.42.62%,38.33%and 23.87%of the second generation moths were originated from C3 vegetables and 57.38%,61.67%and 76.13%of the second generation moths were originated from C4 maize,the average δ13C(13C/12C)values were-26.25‰,-25.98‰,-25.78‰,-12.93‰,-12.61‰ and-12.52‰,respectively.44.29%,40.95%and 22.86%of the third generation moths were originated from C3 vegetables and 55.71%,59.05%and 77.14%of the third generation moths were originated from C4 maize,the average δ13C(13C/12C)values were-25.57‰,-26.09‰,-25.85‰,-12.56‰,-12.25‰ and-12.75‰,respectively.On the whole,36.94%,35.23%and 15.17%of the first,second and third generation moths were separately originated from C3 vegetables and 63.06%,64.77%and 84.83%were respectively originated from C4 maize,the average δ13C(13C/12C)values were-26.09‰,-26.19‰,-25.59‰,-12.66‰,-12.86‰ and 12.69‰ under 1﹕1,1﹕2 and 1﹕3 planting structure patterns of vegetables/maize in Hexi Corridor.One-way ANOVA analysis showed that the proportion of the first,second and third generations of C3 host type of moths originated from 1﹕1 and 1﹕2 planting structure patterns of vegetables/maize was significantly higher than that originated from 1﹕3 planting structure pattern of vegetables/maize,while the proportion of the first,second and third generations of C4 host type of moths originated from 1﹕1 and 1﹕2 planting structure patterns of vegetables/maize was significantly lower than that originated from 1﹕3 planting structure pattern of vegetables/maize.[Conclusion]Under 1﹕1,1﹕2 and 1﹕3 planting structure patterns of vegetables/maize in Hexi Corridor,36.94%,35.23%and 15.17%of H.armigera moths from the first to the third generation were originated from C3 vegetables and 63.06%,64.77%and 84.83%of H.armigera moths from the first to the third generation were originated from C4 maize,the moths produced by three planting structure patterns mainly were of C4 host types.The results indicated that the reduced area ratio of vegetables/maize was conducive to increasing the relative abundance of the moth population of H.armigera with adjustment of crop planting structure in the Hexi Corridor,in particular,the expansion of maize played a decisive role in the formation of the C4 host type of H.armigera moths.Therefore,the comprehensive control of H.armigera should adhere to the integrated control strategy of"key control in the maize and balanced control in the vegetables"in Hexi Corridor so as to avoid secondary disasters caused by local control in the maize or in the vegetables and unbalance the integrality of maize and vegetables.关键词
河西走廊/作物种植结构/棉铃虫成虫/寄主类型/形成Key words
Hexi Corridor/crop planting structure/Helicoverpa armigera moth/natal host type/formation引用本文复制引用
郭建国,姜小凤,谢晓丽,郑荣,缪纯庆,魏建荣..河西走廊作物种植结构对棉铃虫成虫寄主类型形成的影响[J].中国农业科学,2025,58(14):2782-2792,11.基金项目
甘肃省科学技术厅重点研发计划(20YF8NA108)、甘肃省农业科学院重点研发计划(2023GAAS23)、嘉峪关市科学技术局重点研发计划(21-21)、中华人民共和国科学技术部高端外国专家引进计划(G2022042011L) （20YF8NA108）
