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浙江大学学报（农业与生命科学版）
浙江大学学报(农业与生命科学版)  2011, Vol. 37 Issue (4): 439-445    DOI: 10.3785/j.issn.1008-9209.2011.04.013
农业科学     
生物质炭对红壤性质和黑麦草生长的影响
黄 超,刘丽君,章明奎
浙江大学环境与资源学院浙江省亚热带土壤与植物营养重点研究实验室,浙江 杭州 ３１００５８
Effects of biochar on properties of red soil and ryegrass growth
HUANG Chao,LIU Li-jun,ZHANG Ming-kui
Zhejiang Provincial Key Laboratory of Subtropical Soil and Plant Nutrition , College of Environmental and Resource Sciences , Zhejiang University , Hangzhou 310058 , China
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摘要： 为了解生物质炭施用对红壤性质的改良效果,采用盆栽试验研究不同生物质炭投入量对２ 种不同肥力水平红壤质量指标的影响,探讨生物质炭施用对黑麦草生长的影响.结果表明:红壤施用生物质炭不仅大大提高了土壤碳库,还可降低土壤酸度,增加土壤pH 值和盐基饱和度,提高土壤水稳定性团聚体数量,增加土壤速效磷、速效钾和有效氮,增强土壤保肥能力,改善植物生长环境,促进黑麦草的生长;生物质炭施用量为１０ 和５０ g.kg -1 时,经１ 年的培养试验后２ 个研究土壤的有机碳、速效P 、速效K 和盐基饱和度分别比对照增加３１％ ～ ７４４％ 、１４％ ～ ２１５％ 、６％ ～ １１０％ 和１７％ ～ ８２％ ,pH 值增加０.１１ ～ ０.４０ 个单位;生物质炭的改善作用在肥力水平较低的土壤上明显高于肥力水平较高的土壤,改善效果随生物质炭用量的增加而增加,而在肥力水平较高的土壤中,高量施用生物质炭(２００ g.kg-1 )可导致土壤微生物生物量下降,对黑麦草的生长产生轻微的抑制作用.
Abstract: To understand the effects of biochar application on properties of red soil , a pot experiment was conducted to study the influences of different application rates of biochar on soil quality indexes of two red soils varying in their fertility levels . The effect of biochar application on ryegrass growth was also observed . The results showed that the application of biochar to the red soils not only increased greatly storage of organic carbon of the soils , but also increased pH value , base saturation , cation exchange capacity , and amounts of water‐stable aggregates , field moisture capacity , available N , P and K of the soils , and decreased acidity and bulk density of the soils , and thus modified growth environments of ryegrass , and improved its growth . As compared to the control , concentrations of organic C , available P , K and base saturation of biochar‐treated soils increased by ３１％--７４４％ ,１４％--２１５％ ,６％--１１０％ , and １７％--８２％ , respectively , and soil pH increased by ０ .１１--０ .４０ unit ,at the application of biochar of １０ and ５０ g.kg -1 . The effects of biochar application were related to fertility levels of the soils ,and were greater in the low‐fertility soil than in the high fertility soil . The modified effects in the low fertility soil increased with increasing the rates of biochar application . However ,high application rate of biochar ( ２００ g.kg -1 ) might result in decline of micro‐biomass C in the high fertility soil , and limited slightly the growth of ryegrass .
出版日期: 2011-07-20
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引用本文:

黄 超,刘丽君,章明奎. 生物质炭对红壤性质和黑麦草生长的影响[J]. 浙江大学学报(农业与生命科学版), 2011, 37(4): 439-445.

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http://www.zjujournals.com/agr/CN/Y2011/V37/I4/439

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