摘要
研究旨在比较宁夏南部山区不同生态类型条件下青贮玉米产量和品质的差异。试验在宁夏固原市原州区(海拔1 700 m)和泾源县大湾乡(海拔2 000 m)分别种植4个不同熟期的青贮玉米品种(中原单32号、宁单40号、银玉238、桂青贮1号),将4个青贮玉米的栽培密度分别设置为6.75万、7.5万、8.25万株/hm^(2),测定青贮玉米的产量及中性洗涤纤维、酸性洗涤纤维、淀粉、粗蛋白含量。结果显示:同一品种相同密度下,产量在两个生态区域表现不一,桂青贮1号、银玉238的鲜产量明显高于中原单32和宁单40。栽培密度为8.25万株/hm^(2)时,银玉238在固原市原州区和泾源县大湾乡产量均达到最高,分别为117.0、133.5 t/hm^(2),明显高于其他两个密度下的产量。栽培密度为7.50万株/hm^(2)时,固原市原州区宁单40的淀粉含量最高,泾源县大湾乡桂青贮1号的粗蛋白含量最高。研究表明,综合各项指标评价,初步选出适宜在泾源县大湾乡(海拔2 000 m)地区种植的品种为宁单40,适宜在固原市原州区(海拔1 700 m)区域种植的品种为银玉238。
The study was to compare the yield and quality of silage maize under different ecological types in the southern mountainous areas of Ningxia. Four silage maize varieties(Zhongyuan Dan 32, Ningdan 40, Yinyu 238, Gui Silage 1) with different maturity stages were planted in Yuanzhou district of Guyuan city(elevation 1 700 m) and Dawan Township of Jingyuan county(elevation 2 000 m), respectively. The cultivation density of four silage maize was set as 67 500, 75 000and 82 500 plants/hm^(2), respectively. The yield, neutral detergent fiber, acid detergent fiber, starch and crude protein content of silage maize were measured. The results showed that the yield of the same variety was different in two ecological regions under the same density. The fresh yield of Gui Silage 1 and Yinyu 238 was significantly higher than that of Zhongyuan Dan 32 and Ningdan 40. The yield of Yinyu 238 at densities of 82 500 plants/hm^(2)reached the highest in Yuanzhou district and Dawan Township of Jingyuan County, which were 117.0 and 133.5 t/hm^(2), respectively, which were significantly higher than those at other two densities. The starch content of Ningdan 40 in Yuanzhou district was the highest, and the crude protein content of Gui Silage 1 in Dawan Township of Jingyuan county was the highest. The study indicates that Ningdan 40 is suitable for planting in Dawan Township(elevation 2 000 m) of Jingyuan county after comprehensive evaluation of various indexes. It is suitable for planting Yinyu 238 in Guyuan city(elevation 1 700 m) of Yuanzhou district.
作者
王斐
王克雄
关耀兵
万鹏
吴利晓
李玉莲
WANG Fei;WANG Ke-xiong;GUAN Yao-bing;WAN Peng;WU Li-xiao;LI Yu-lian
出处
《饲料研究》
CAS
北大核心
2022年第20期79-82,共4页
Feed Research
基金
农业高质量发展和生态保护科技创新示范课题(项目编号:NGSB-2021-3)
固原市科技计划项目(项目编号:2020GYKYF021)。
关键词
青贮玉米
干物质
品质
产量
silage maize
dry matter
quality
yield
