摘要
为检测施用生物炭对酸性红壤土壤磷转化和土壤溶磷细菌数量的影响,用茶园土进了8周的接种溶磷细菌的微缩土壤培养实验,设置了0%、1%、3%(重量比)3种添加生物炭处理。结果表明:接种后土壤溶磷细菌数量迅速下降,而施用生物炭显著增加了茶园溶磷细菌的数量,为不施用生物炭的对照处理的10.5~15.25倍。此外,添加生物炭显著提高了土壤p H值、土壤有效磷(Bray-P)含量与土壤碱性磷酸酶活性。相关性分析结果表明:红壤茶园土壤溶磷细菌数量与土壤有机碳、总氮、总磷、有效磷、p H值、碱性磷酸酶活性之间均呈显著正相关关系,与土壤酸性磷酸酶活性呈负相关关系。总之,与对照处理相比较,添加生物炭可以增加红壤茶园土壤溶磷细菌的数量,并对土壤磷素起到活化作用。
To assess the effects of biochar application on the conversion of soil phosphorus and the numbers of phosphate solubilizing bacteria（PSB） in acid red soil, a eight week PSB inoculation microcosm incubation experiment was performed using soil from tea plantation, and biochar adding treatment of 0%, 1% and 3%（w/w） were conducted. The results showed that： the numbers of PSB decreased rapidly after inoculation, the application of biochar significantly increased the numbers of PSB in tea plantation, which was 10.5-15.25 times as much as that of control treatment. In addition, the application of biochar increased soil p H value,available P（Bray-P） content, and alkaline phosphatase enzyme activities. Correlation analysis showed that：there were positive correlations between numbers of PSB and organic matter content, total nitrogen, total phosphorus, p H value and alkaline phosphatase enzyme activities; and a negative correlation between numbers of PSB and acid phosphatase enzyme activities. In summary, compared with control treatment, the application of biochar increased the numbers of PSB and activated soil P in red soil tea plantation.
作者
郑慧芬
曾玉荣
王成己
李振武
罗旭辉
王义祥
翁伯琦
Zheng Huifen;Zeng Yurong;Wang Chengji;Li Zhengwu;Luo Xuhui;Wang Yixiang;Weng Boqi(Institute of Agricultural Ecology,Fufian Academy of Agricultural Sciences,Fuzhou 350013;Institute of Agricultural Economics and Information Technology,Fujian Academy of Agricultural Sciences,Fuzhou 350013)
出处
《中国农学通报》
2018年第18期114-118,共5页
Chinese Agricultural Science Bulletin
基金
福建省自然科学基金项目“红壤区生物炭对溶磷军定殖能力和溶磷效果的影响”(2016J05090)
福建省农业科学院博士基金“泥炭添加发酵床养猪温室气体排放的影响”(2014BS-4)
关键词
生物炭
溶磷细菌
土壤有效磷
土壤碱性磷酸酶活性
红壤茶园
biochar
phosphate solubilizing bacteria
soil available P
alkaline phosphatase enzyme activities
red soil tea plantation
