20个玉米品种在安定区的适应性研究及营养价值评价

Adaptability research and evaluation of nutritional value of 20 maize varieties in Anding district

试验于2021年-2022年对20个玉米品种的生产性能和饲用品质进行综合评价,旨在筛选出适宜安定区或同类地区种植的青贮玉米品种。2021年对20个参试玉米品种的株高、茎粗、叶片数、单株重、果穗长、果穗粗和穗行数等农艺性状和饲草产量进行测定,利用隶属函数法对其营养成分进行综合分析,并结合饲草相对饲喂价值(RFV)和饲草分级指数(GI),对参试品种进行综合评价,初步筛选出兴贮88、先玉1321、中农大2118、京科青贮516、京科968、京九青贮16、同康1号、京科青贮932和先玉1225共9个综合指标较好的品种,于2022年进行第二次试验。2022年采用同样的方法对选出的9个参试品种进一步综合评价,结果表明:京科青贮932、京科青贮516、京九青贮16和兴贮88的适应性好,农艺性状和产量优异,相对饲用价值较高,适宜在安定区或者同类地区推广种植。

The production performance and forage quality of 20 maize varieties were comprehensively evaluated from 2021 to 2022,aiming at screening out silage maize varieties suitable for planting in Anding district or similar areas.In 2021,the agronomic traits and forage yield of 20 tested maize varieties were measured,including plant height,stem diameter,leaf number,single plant weight,ear length,ear diameter,and row number per ear.The nutritional components were comprehensively analyzed by membership function method,and the tested varieties were comprehensively evaluated by combining forage relative feeding value(RFV)and forage grading index(GI).Xingzhu 88,Xianyu 1321,Zhongnongda 2118,Jingke silage 516,Jingke 968,Jingjiu silage 16,Tongkang 1,Jingke silage 932,and Xianyu 1225 were preliminarily screened.In 2022,the nine selected varieties were further comprehensively evaluated by the same method.The results showed that Jingke silage 932,Jingke silage 516,Jingjiu silage 16,and Xingzhu88 had good adaptability,excellent agronomic characters and yield,and high relative feeding value,which were suitable for popularization and planting in Anding district or similar areas.