炭基土壤改良剂对白浆土中碳氮含量的影响

发布时间：2018-02-03 11:33

本文关键词： 炭基土壤改良剂白浆土碳氮微生物生物量碳微生物生物量氮　出处：《江苏农业科学》2017年21期 　论文类型：期刊论文

【摘要】：通过大田试验研究炭基土壤改良剂的不同施入量(0、10、20、30 t/hm~2)对旱作农田土壤碳、氮含量的影响。结果表明,炭基土壤改良剂可有效提高土壤有机质、全氮、微生物生物量碳、微生物生物量氮的含量,且随着施入量的增加而提高。与CK相比,处理组土壤有机质含量提高3.19%~25.93%,土壤全氮含量提高2.20%~16.18%,土壤微生物生物量碳含量提高19.23%~73.93%,微生物生物量氮含量提高24.94%~89.51%,且均在施入30 t/hm2炭基土壤改良剂时达到最大值。因此,添加炭基土壤改良剂具有提高土壤有机质及碳、氮的含量、提升土壤养分持续供给的效用。炭基土壤改良剂的推荐用量为20 t/hm~2。
[Abstract]:The effects of different application amount of carbon based soil modifier on carbon and nitrogen content in dryland soil were studied by field experiment. The content of organic matter, total nitrogen, microbial biomass carbon and microbial biomass nitrogen increased with the increase of the amount of application of carbon-based soil modifier. Compared with CK, the content of soil organic matter, total nitrogen, microbial biomass carbon and microbial biomass nitrogen were increased. The content of soil organic matter in treatment group increased by 3.19% and the content of soil total nitrogen increased by 2.20% and 16.18% respectively. The soil microbial biomass carbon content increased 19.23% and the microbial biomass nitrogen content increased by 89.51%. The maximum value was reached when 30 t / hm ~ 2 carbon-based soil modifier was applied. Therefore, the addition of carbon-based soil modifier could increase the content of soil organic matter, carbon and nitrogen. The recommended dosage of carbon-based soil modifier is 20 t / hmmc2.
【作者单位】：东北农业大学资源与环境学院;
【基金】：黑龙江省科技计划(编号:GA10B502) 东北农业大学博士后科研基金(编号:2012RCB95)
【分类号】：S156.2
【正文快照】： 生物质炭(biochar)是指将生物质原料(农作物秸秆、木材、畜禽粪便、生活垃圾等)在限氧或缺氧条件下经高温热裂解所产生的一类具有高度芳香化、含碳丰富、稳定的固态物质[1]。生物质炭特殊的理化性质具有提高土壤的固碳减排能力[2-3]、提高土壤肥力[4-5]和改良不良土壤等特性[6

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