Soil properties and poplar growth with pig manure biogas slurry
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摘要: 随着畜牧养殖业规模化、集约化发展,禽畜粪便沼气工程产生的沼液数量增加,沼液中氮、磷、钾等营养元素丰富,直接排放极易造成水体富营养化和环境污染。以中粮肉食(江苏)有限公司沼气厂的猪粪沼液为试验材料,通过2次施入不同量沼液的处理,研究了施用沼液对杨树Populus林地土壤性质及林分生长的影响。结果表明:施用沼液能显著增加(P<0.05)土壤有机质和养分质量分数,提高土壤肥力。施沼液1 125 m3hm-2(处理C5)土壤有机质质量分数增加28.0%,土壤全氮增加35.5%,有效磷增加62.3%,速效钾增加33.5%。施沼液量450 m3hm-2以下对杨树生长有较明显的促进作用。图2表1参13Abstract: As scale and intensity increase with development of the animal husbandry industry, use of manure biogas slurry from livestock biogas slurry projects also increases. To counter any possibility of water eutrophication and environmental pollution from direct emissions of pig manure biogas which is rich in N, P, K, and other nutrients, the effects of pig manure biogas slurry applied on soil properties and growth of a poplar (Populus) plantation were studied. The biogas plant of COFCO carnivorous (Jiangsu) Co. Ltd produced the slurry. Results showed that 1 125 m3hm-2 biogas slurry fertilization (C5) increased soil organic matter (28%), total N (35.5%), available P (62.3%), and available K 33.5%. Also, biogas slurry fertilization below 450 m3hm-2 was detrimental to poplar growth. [Ch, 2 fig. 1 tab. 13 ref.]
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Key words:
- forest soil science /
- pig manure biogas slurry /
- poplar /
- soil fertility /
- growth
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链接本文:
https://zlxb.zafu.edu.cn/article/doi/10.11833/j.issn.2095-0756.2015.02.006
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