猪粪生物质炭对土壤肥效及小白菜生长的影响

发布时间：2018-02-25 20:34

本文关键词： 猪粪炭猪粪厩肥土壤肥效小白菜产量品质　出处：《农业环境科学学报》2016年09期 　论文类型：期刊论文

【摘要】：针对我国畜禽养殖业飞速发展,畜禽粪便产生量迅速增加造成的环境问题及其再利用问题,以猪粪生物质炭为研究对象,探究猪粪厩肥炭化前后对土壤肥力和小白菜生长的影响,以期为畜禽粪便的农业资源化利用提供新思路新途径。采用盆栽试验,设置3个猪粪生物质炭施用量梯度0.5%、1%和2%,并按49.8%的炭化产率折算,设置风干猪粪厩肥施用量梯度1%、2%和4%,比较炭化前后的施用效应。试验结果表明,猪粪厩肥热裂解炭化后灰分、有机碳、全磷、全钾和速效钾的含量较猪粪厩肥有所提高,而全氮、碱解氮和速效磷含量有所降低。猪粪生物质炭处理显著增加了土壤有机质、全氮、速效磷和速效钾的含量,但增加幅度低于对应量的猪粪厩肥处理。施用猪粪生物质炭较相应量猪粪厩肥处理的小白菜产量提高26.50%~49.98%,氮素偏生产力提高119.32%~162.81%,叶面积提高20.84%~21.58%;与猪粪厩肥相比,猪粪生物质炭可显著提高小白菜可溶性蛋白质和维C含量,增幅33.11%~42.93%和15.16%~46.06%,硝酸盐含量显著降低17.80%~22.08%。畜禽粪便热裂解炭化是养殖业废弃物处理和资源化利用的一种有效途径。
[Abstract]:In view of the environmental problems caused by the rapid development of livestock and poultry breeding industry and the rapid increase of animal manure production and its reuse, this paper takes the pig manure biomass charcoal as the research object. The effects of pig manure carbonization on soil fertility and growth of pakchoi were investigated in order to provide a new way for the utilization of livestock and poultry manure in agriculture. The pot experiment was used to study the effects of pig manure carbonization on soil fertility and growth of pakchoi. Three pig manure biomass carbon application gradients of 0.5% and 2% were set up. According to the conversion of 49.8% carbonization yield, the air-dried pig manure application gradient of 1% 2% and 4% was set to compare the application effect before and after carbonization. The results showed that the ash content after pyrolysis carbonization of pig manure was obtained. The contents of organic carbon, total phosphorus, total potassium and available potassium were higher than those of pig manure, but the contents of total nitrogen, alkali-hydrolyzed nitrogen and available phosphorus were decreased. The contents of soil organic matter, total nitrogen, available phosphorus and available potassium were significantly increased by the treatment of pig manure biomass charcoal. But the increase range was lower than the corresponding amount of pig manure manure treatment. Compared with the corresponding pig manure manure treatment, the yield of pakchoi increased 26.50 ~ 49.98, the nitrogen partial productivity increased by 119.32 and 162.81, the leaf area increased by 20.84 and 21.58, compared with the pig manure manure, the yield of pakchoi increased by 26.50 and 49.98. The content of soluble protein and vitamin C in Chinese cabbage was significantly increased by 33.111.93% and 15.1646.06, and the nitrate content was significantly decreased by 17.80,22.08.The pyrolysis carbonization of livestock and poultry manure was an effective way for the treatment and utilization of livestock wastes.
【作者单位】：南京农业大学农业资源与生态环境研究所南京农业大学资源与环境科学学院;
【基金】：江苏省有机固体废弃物资源化协同创新中心项目科技部农业科技成果转化资金项目(2013GB23600666)
【分类号】：S634.3;X713

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