Variety Approval and Extension of Spring Sowing Maize in Tangshan City
In order to screen out spring sowing sparse maize varieties suitable for planting in Tangshan area,from 2014 to 2017,Tangshan Crop Seed Station conducted regional trials and production trials of 37 maize varieties participating in 49 500 plants/hm2 groups in 7 test bases under Tangshan City.Combining with the results of vari-ety safety testing and field visits by experts,a total of 7 varieties were screened out and recommended to pass the variety approval in Hebei Province.The accumulated planting area from 2017 to 2020 is 56 000 hm2,with an aver-age yield increase of 2 368.5 kg/hm2 compared with'Xianyu 335'.It provides a successful example for the areas that are not suitable for planting dense corn varieties in the country,and also provides a reference for the setting of national corn experiments in local groups.
NETL
NSTL
万方数据
维普
