滇东北地区几种饲用玉米的产量和抗病性比较研究

Comparative study on yield and disease resistance of several forage corn in northeast Yunnan

摘要:

【目的】 筛选出适合在滇东北地区推广种植的青贮新品种。【方法】 以当地主推品种雅玉04889 为对照种，按照云南省区域试验及公开发表文献所提供的数据采集方法，在2018 年对比了曲辰30 号、曲辰31 号、曲辰32 号、曲辰33 号、曲辰34 号、曲辰35 号几个青贮玉米品种的产量和抗病性，在2019 年继续对比雅玉04889、曲辰31 号、曲辰32 号和曲辰33 号几个青贮玉米品种的产量和抗病性，并对数据进行分析。【结果】 所有品种中仅有曲辰32 号是紧凑型。2018 年，干物质产量最高的为曲辰32号，后面依次是曲辰33 号、曲辰34 号、曲辰31 号、曲辰30 号、曲辰35 号；2019 年，曲辰32 号的干物质产量依然最高。2018 年，雅玉04889 对灰斑病的抗性最差；2019 年，所有品种的抗病性一致。【结论】 综合考虑农艺性性状、抗病性和产量，曲辰32 号最适合作为青贮玉米在滇东北地区进行栽培。

关键词:青贮玉米;产量;抗病性

Abstract:

【Objective】 Corn silage，known for itshigh feeding value，isan important feed crop. This study aims toselect new silage maize varieties suitable for popularization and planting in northeast Yunnan.【Method】 Using YY04889 as the control variety，this study compared the yield and disease resistance of several silage maize varieties，includingYY04889（CK），QC30，QC31，QC 32，QC 33，QC 34 and QC 35，in 2018. Data collection methods werebased on regional trials and published literaturefromYunnan Province. In 2019，the comparison was continued withYY 04889，QC31，QC32 and QC 33 to analyze yield and disease resistance further.【Result】 The study found thatQC 32 demonstratedcompact growth among all varieties. In 2018，QC 32 had the highest dry matter yield，followedby QC 33，QC 34，QC 31，QC30 and QC 35. QC 32 maintained the highest dry matter yield in 2019. In the first year，YY 04889 showedthe poorestresistance to gray spot disease，whilein the following year ，the resistance of all varietieswas consistent.【Conclusion】 Considering agronomic traits，disease resistance and yield，QC 32 is the most suitablefor silage cultivation in northeast Yunnan.

Key words:silage corn;yield;disease resistance