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针对我国南方旱地红壤有效磷含量普遍较低的问题,研究了生物黑炭与无机肥料配施对旱地红壤有效磷、有机碳含量和pH的影响.结果表明:生物黑炭与无机肥料配施后,红壤理化性质得到不同程度的改善;土壤pH值、有机碳和有效磷含量在油菜各生育期均得到不同程度的提高,在抽薹期、开花期、成熟期分别较种植前平均提高了16%、24%、26%,23%、34%、38%及100%、191%、317%.pH、有机碳和有效磷含量随着生物黑炭用量的增多而增加.施用生物黑炭处理的土壤有效磷与pH和有机碳呈显著相关性.研究结果可为改善旱地红壤缺磷状况及其理化性质提供科学依据.
In view of the generally low available phosphorus content in the red soils of southern China, the effects of biological black charcoal and inorganic fertilizers on availability of available phosphorus, organic carbon and pH of red soil in dry land were studied. The results showed that after application of biological black coal and inorganic fertilizers , And the physicochemical properties of red soil improved to some extent. Soil pH, organic carbon and available phosphorus content increased at different growth stages in rapeseed, and increased by 16% at the time of bolting, flowering and maturing respectively, , 24%, 26%, 23%, 34%, 38% and 100%, 191% and 317%, respectively.pH, organic carbon and available phosphorus increased with the increase of biochar, Soil available phosphorus had a significant correlation with pH and organic carbon, and the results could provide a scientific basis for improving phosphorus deficiency status and physicochemical properties of red soil in dryland.