不同收割时间对甜玉米秸秆的营养价值和青贮发酵品质的影响

草业学报 ›› 2011, Vol. 20 ›› Issue (6): 208-213.

不同收割时间对甜玉米秸秆的营养价值和青贮发酵品质的影响

崔卫东¹,董朝霞¹,张建国^1*,魏建生²,林禄成²,张明²

1.华南农业大学农学院,广东广州 510642;
2.肇庆市鼎湖温氏乳业有限公司,广东肇庆 5526072

收稿日期:2010-09-28 出版日期:2011-06-25 发布日期:2011-12-20
通讯作者: E-mail:zhangjg@scau.edu.cn
作者简介:崔卫东(1985-),男,河北保定人,在读硕士。E-mail:cwdongg@163.com
基金资助:
广东省高等学校人才引进专项基金,温氏集团产学研项目和教育部留学人员回国启动基金资助。

The nutrient components and ensilage fermentation quality of sweet corn stalks harvested at different times

CUI Wei-dong¹, DONG Zhao-xia¹, ZHANG Jian-guo¹, WEI Jian-sheng², LIN Lu-cheng², ZHANG Ming²

1.College of Agricultural, South China Agricultural University, Guangzhou 510642, China;
2.Zhaoqing Dinghu Wens Milk Company, Zhaoqing 5526072, China

Received:2010-09-28 Online:2011-06-25 Published:2011-12-20

摘要/Abstract

摘要： 为获得甜玉米秸秆的合理收割时间,研究了在冬季和夏季甜玉米摘穗后,其秸秆收割时间对营养成分及青贮品质的影响。在甜玉米摘穗后第0,3,6,9和12天收割并进行青贮,测定5个收割时间甜玉米秸秆的营养成分,青贮90 d后测定其青贮发酵品质。结果表明,冬季不同收割时间对甜玉米秸秆的粗蛋白、粗脂肪和无氮浸出物含量无显著影响(P>0.05),但摘棒当天秸秆的可溶性碳水化合物(WSC)和粗纤维含量较高并与第9天差异显著(P<0.05),摘穗后第3天收割青贮发酵品质较好且显著优于第12天(P<0.05);夏季不同收割时间对秸秆营养成分影响较大,秸秆干物质含量随收割时间推迟显著增加(P<0.05),摘穗当天秸秆的粗蛋白和粗纤维含量最高,而WSC和无氮浸出物含量最低,摘棒当天青贮发酵品质比其他收割时间稍差(P<0.05)。甜玉米秸秆冬季在摘穗后6 d内收割,夏季在摘穗后9 d内收割营养价值较高;冬季摘穗后第0～6天,夏季摘穗后第3～9天调制青贮效果最好。

Abstract: The effect of harvest time on nutrient components and ensilage fermentation quality of sweet corn stalks in winter and summer were investigated. The stalks were harvested and ensiled on the day of ear harvest and the 3rd, 6th, 9th and 12th day after the harvest of corn ears. In winter the contents of crude protein, ether extract and nitrogen free extract in stalks were not significantly different between harvest times but the contents of water soluble carbohydrates and crude fiber in stalk harvested on the day of ear harvest were significantly greater than those harvested on the 9th day after ear harvest. The best fermentation quality was obtained when stalks were harvested on the 3rd day after the ear harvest. In summer, harvest time significantly influenced the nutrient components of stalks. The dry matter content of stalks rose significantly as the harvest time was delayed. The contents of crude protein and crude fiber in stalks were greatest on the day of ear harvest, but the contents of water soluble carbohydrates and nitrogen free extract were the lowest as was the score for silage quality. Sweet corn stalks had the best nutrient quality when harvested within 6 d after ear harvest in winter and within 9 d in summer, and had the best silage quality when harvested within 6 d in winter and during 3-9 d in summer.

中图分类号:

S816.6
S513

崔卫东,董朝霞,张建国,魏建生,林禄成,张明. 不同收割时间对甜玉米秸秆的营养价值和青贮发酵品质的影响[J]. 草业学报, 2011, 20(6): 208-213.

CUI Wei-dong, DONG Zhao-xia, ZHANG Jian-guo, WEI Jian-sheng, LIN Lu-cheng, ZHANG Ming. The nutrient components and ensilage fermentation quality of sweet corn stalks harvested at different times[J]. Acta Prataculturae Sinica, 2011, 20(6): 208-213.

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