| 施肥对甜高粱产量及茎叶养分质量分数的影响 |
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| 引用本文： | 郭彦军,尹亚丽,张健,韩龙,郭芸江,唐华.施肥对甜高粱产量及茎叶养分质量分数的影响[J].西南农业大学学报,2011,33(10). |
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| 作者姓名： | 郭彦军 尹亚丽 张健 韩龙 郭芸江 唐华 |
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| 作者单位： | 西南大学动物科技学院;重庆市畜牧科学院; |
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| 基金项目： | 重庆市自然科学基金资助项目(CSCT2010AC1010,CSCT2008AB1124) |
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| 摘 要： | 采用田间试验研究了施肥水平对大力士甜高粱产量、茎叶比及茎秆和叶片可溶性糖、全氮、全磷及全钾质量分数的影响.结果表明:施肥显著提高了甜高粱干物质产量,高施氮肥组(200kg/hm2)较对照提高了29%,较低施氮肥组(100kg/hm2)提高了17%.甜高粱产量对氮肥和钾肥敏感,对磷肥不敏感,氮、磷、钾肥之间存在显著的交互作用.磷、钾肥比例为1∶1时,产量显著高于1∶2和2∶1处理.本试验条件下,甜高粱的最佳氮、磷、钾肥施用量为200kg/hm2,50kg/hm2,50kg/hm2.随着刈割次数的增加,甜高粱茎叶干物质比及茎秆和叶片中的可溶性糖质量分数逐渐升高,全氮、全磷及茎秆中的全钾质量分数下降.茎秆中可溶性糖和全钾质量分数显著高于叶片,而叶片氮素质量分数显著高于茎秆,磷质量分数无显著差异.施肥处理茎秆氮质量分数高于对照,而可溶性糖质量分数随氮肥施用水平的增加呈下降趋势.
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| 关 键 词： | 甜高粱 施肥 生产性能 养分质量分数 |
Effects of Fertilization on Yield and Nutrient Concentration in the Stem and the Leaves of Sweet Sorghum |
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| GUO Yan-jun,YIN Ya-li,ZHANG Jian,HAN Long,GUO Yun-jiang,TANG Hua .School of Animal Science , Technology,Southwest University,Chongqing ,China,.Chongqing Academy of Animal Science,Chongqing.Effects of Fertilization on Yield and Nutrient Concentration in the Stem and the Leaves of Sweet Sorghum[J].Journal of Southwest Agricultural University,2011,33(10). |
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| Authors: | GUO Yan-jun YIN Ya-li ZHANG Jian HAN Long GUO Yun-jiang TANG Hua School of Animal Science Technology Southwest University Chongqing China Chongqing Academy of Animal Science Chongqing |
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| Institution: | GUO Yan-jun1,YIN Ya-li1,ZHANG Jian2,HAN Long1,GUO Yun-jiang1,TANG Hua1 1.School of Animal Science and Technology,Southwest University,Chongqing 400716,China,2.Chongqing Academy of Animal Science,Chongqing 401121 |
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| Abstract: | A field study was conducted to evaluate the effects of fertilization on yield,stem-to-leaf ratio and the concentrations of soluble carbohydrates,total nitrogen,total phosphorus and total potassium in the stem and the leaves of sweet sorghum(Sorghum bicolor L.).The results showed that fertilization significantly improved yield.The yield of the high nitrogen treatment(200 kg/hm2) was 29% higher than that of the control and 17% higher than that of the low nitrogen treaatment(100 kg/hm2).The yield of sweet sorg... |
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| Keywords: | sweet sorghum fertilization growth performance nutrient concentration |
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