| 青贮玉米种植密度及与秣食豆混播比例对青贮品质的影响 |
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| 引用本文： | 连露,胡国富,李冰,崔国文,冀国旭,阎南南.青贮玉米种植密度及与秣食豆混播比例对青贮品质的影响[J].草地学报,2017,25(1). |
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| 作者姓名： | 连露 胡国富 李冰 崔国文 冀国旭 阎南南 |
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| 作者单位： | 东北农业大学动物科学技术学院,黑龙江哈尔滨,150030 |
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| 基金项目： | 公益性行业(农业)科研专项“青藏高原羊八井社区饲草增产增效关键技术”，秣食豆与青贮玉米混播提升奶牛青饲品质技术推广与示范 |
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| 摘 要： | 在3个青贮玉米(Zea mays)种植密度(5.4,6.2,7.95万株·hm~(-2))基础上,分别按株数1∶1,1∶2,1∶3三个比例与秣食豆(Glycine max(L.)Merr)混播,以单播为对照,探究青贮玉米种植密度及与秣食豆混播比例对青贮品质的影响。结果表明:青贮玉米种植密度为6.2万株·hm~(-2),混播比例为1∶1时氨态氮含量最低,为5.42%。随青贮玉米种植密度的增加,淀粉含量呈降低趋势;在同一种植密度下,随秣食豆混播比例增加,粗蛋白质含量呈增加趋势,其中6.2万株·hm~(-2)混播比例为1∶3时粗蛋白质含量最高,达到8.09%,比同一种植密度单播提高19.67%。种植密度为7.95万株·hm~(-2)混播比例为1∶1时干物质含量最高,达到了28.71%。采用灰色关联度法综合比较,种植密度为7.95万株·hm~(-2)混播比例为1∶1的处理得分最高,综合青贮品质最佳;其次是种植密度6.2万株·hm~(-2)混播比例为1∶2的处理。
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| 关 键 词： | 青贮玉米 秣食豆 混播比例 种植密度 青贮品质 |
Effects of Planting Densities and Mixed Sowing Ratios of Silage Corn and Fodder Soybean on Silage Quality |
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| LIAN Lu,HU Guo-fu,LI Bing,CUI Guo-wen,JI Guo-xu,YAN Nan-nan.Effects of Planting Densities and Mixed Sowing Ratios of Silage Corn and Fodder Soybean on Silage Quality[J].Acta Agrestia Sinica,2017,25(1). |
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| Authors: | LIAN Lu HU Guo-fu LI Bing CUI Guo-wen JI Guo-xu YAN Nan-nan |
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| Abstract: | The effects of mixed sowing silage corn and fodder soybean on silage quality were investigated.The experiment was designed with three planting densities of silage corn (54 000,62 000,79 500 plants · hm-2),with three mixed sowing ratios,which silage corn was mixed with fodder soybean by the number of 1 ∶ 1,1 ∶ 2 and 1 ∶ 3.The single sowing of silage corn was control.The results showed that when the planting density was at 62 000 and mixed sowing ratios was 1 ∶ 1,NH3-N content was the lowest.With the increase of planting density,starch content decreased.When the mixed sowing ratios increased under the same silage corn planting density,crude protein content showed a rising trend.When the planting density was 62 000 plants · hm 2,mixed sowing ratios was 1 ∶ 3,crude protein content was the highest.When the planted density was 79 500 plants · hm 2,and mixed sowing ratios was 1 ∶ 1,dry matter yield was the highest.Grey relevancy analysis was used to compare fermentation quality and nutritional quality.When the planted density was 79 500 plants · hm-2 and mixed sowing ratios was 1 ∶ 1,silage quality was the best,followed by 62 000 plants · hm-2 planting density with mixed sowing ratios of 1 ∶ 2. |
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| Keywords: | Silage corn Fodder soybean Mixed sowing ratio Planting density Silage quality |
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