| 沼液施用量对象草N、P吸收利用效率和土壤N、P养分含量的影响 |
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| 引用本文： | 吴飞龙,叶美锋,林代炎,翁伯琦.沼液施用量对象草N、P吸收利用效率和土壤N、P养分含量的影响[J].福建农业学报,2011,26(1):103-107. |
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| 作者姓名： | 吴飞龙 叶美锋 林代炎 翁伯琦 |
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| 作者单位： | 吴飞龙,叶美锋,林代炎,WU Fei-long,YE Mei-feng,LIN Dai-yan(福建省农业科学院农业工程技术研究所,福建,福州,350003);翁伯琦,WENG Bo-qi(福建省农业科学院,福建,福州,350003) |
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| 基金项目： | 国家科技支撑计划项目，福建省科技星火计划项目，福州市科技计划项目 |
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| 摘 要： | 设置了不同沼液施用量0、40、60、80和100 kg·m-2的处理,研究象草的生物量、养分吸收利用效率以及土壤N、P养分含量的变化.试验结果表明:适度的沼液施用量可促进象草分蘖,增加其生物量.象草的氮利用效率在施用沼液60 kg·m-2的处理最高,为27.5%,随着沼液施用量的增大,氮利用效率逐渐降低;磷的利用效率在...
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| 关 键 词： | 沼液 象草 养分利用效率 氮 磷 |
Effects of biogas sludge on N/P utilization of pennisetum purpureum and soil N/P content |
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| WU Fei-long,YE Mei-feng,LIN Dai-yan,WENG Bo-qi.Effects of biogas sludge on N/P utilization of pennisetum purpureum and soil N/P content[J].Fujian Journal of Agricultural Sciences,2011,26(1):103-107. |
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| Authors: | WU Fei-long YE Mei-feng LIN Dai-yan WENG Bo-qi |
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| Institution: | WU Fei-long1,YE Mei-feng1,LIN Dai-yan1,WENG Bo-qi2(1.Institute of Agricultural Engineering,Fujian Academy of Agricultural Science,Fuzhou,Fujian350003,China,2.Fujian Academy of Agricultural Science,Fujian 350003,China) |
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| Abstract: | By applying different amounts of biogas sludge on soil,the N and P utilization efficiency by Pennisetum purpureum and the N and P contents in soil were studied.The application rates of the sludge used for the experimentation were 0,40,60,80 and 100 kg·m-2.The results showed that P.purpureum could grow well with appropriate application of the biogas sludge.The highest N utilization efficiency was found with the application rate of 27.5% at 60 kg· m-2.The efficiency declined with increasing sludge application from 60 kg·m-2 to 100 kg·m-2.The greatest P utilization efficiency was 32.9% at 40 kg·m-2 application rate.The P utilizations were a constant 30.5% efficiency on all other slurry application rates.The total N in 0-30 cm layer of the soil increased with the application of biogas sludge,but showed a deficiency in 30-60 cm layer.There was no significant differences on the alkali-N,total P or available P in different layers of the soil treated or not treated with the sludge. |
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| Keywords: | biogas sludge Pennisetum purpureum Schum nutrient utilization efficiency N P |
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