秸秆生物炭加速有机质降解并产生养分丰富的堆肥。
Straw biochar hastens organic matter degradation and produces nutrient-rich compost.
机构信息
Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China; Shanghai Engineering Research Centre of Low-carbon Agriculture (SERCLA), Shanghai 201415, PR China.
Eco-environmental Protection Research Institute, Shanghai Academy of Agricultural Sciences, Shanghai 201403, PR China; Shanghai Engineering Research Centre of Low-carbon Agriculture (SERCLA), Shanghai 201415, PR China.
出版信息
Bioresour Technol. 2016 Jan;200:876-83. doi: 10.1016/j.biortech.2015.11.016. Epub 2015 Nov 12.
Biochar derived from wheat straw was added to pig manure in amounts equivalent to 5%, 10%, or 15% (w/w, wet weight). The ratios of NH4(+)/NO3(-) and of UV light absorption at a wavelength of 254nm (SUV254) and dissolved organic carbon (DOC) indicated that compost with 10-15% biochar became more mature and more humified within 42days of composting, and the content of DOC and the concentration of NH4(+) in such compost decreased by 37.5-62.0% and 4.0-20.9%, respectively, compared to the corresponding levels in the control. Addition of biochar lowered the pH and increased electrical conductivity by 7.0-37.5% compared to the control and also increased the concentrations of water-soluble nutrients including PO4(3-) (5.6-7.4%), K(+) (14.2-58.6%), and Ca(2+) (0-12.5%). It is therefore recommended that straw biochar be added to pig manure at 10-15% by weight.
将小麦秸秆制成的生物炭按 5%、10%或 15%（湿重比，w/w）的比例添加到猪粪中。NH4(+) / NO3(-) 的比例以及 254nm 波长处的紫外光吸收率（SUV254）和溶解有机碳（DOC）表明，在堆肥的 42 天内，添加 10-15%生物炭的堆肥变得更加成熟和腐殖化，并且 DOC 的含量和 NH4(+)的浓度分别比对照降低了 37.5-62.0%和 4.0-20.9%。与对照相比，生物炭的添加将 pH 值降低并将电导率提高了 7.0-37.5%，还增加了包括 PO4(3-)（5.6-7.4%）、K(+)（14.2-58.6%）和 Ca(2+)（0-12.5%）在内的水溶性养分的浓度。因此，建议将 10-15%（重量比）的秸秆生物炭添加到猪粪中。
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