当前位置: 首页 > 文章 > 双氰胺对赤红壤中氯化铵硝化抑制效应研究 南方农业学报 2011,42 (10) 1238-1240
Position: Home > Articles > The inhibitory effect of dicyandiamide on nitrification in latosolic red soil Journal of Southern Agriculture 2011,42 (10) 1238-1240

双氰胺对赤红壤中氯化铵硝化抑制效应研究

作  者:
李卓勇;梁家作
单  位:
广西农业科学院蔬菜研究所;广西区307核地质大队
关键词:
赤红壤;双氰胺(DCD);氯化铵;硝化作用;抑制效应
摘  要:
【目的】研究双氰胺(DCD)对赤红壤中氯化铵硝化抑制效率的影响,为提高赤红壤氮肥利用率和减少氮肥污染提供科学依据。【方法】设置双氰胺6个土壤浓度梯度处理,采用室内好气恒温培养方法进行研究。【结果】赤红壤中添加DCD在同一培养时间均能显著降低土壤较高的铵态氮含量,提高硝态氮含量。但添加0.6%~1.0%DCD对氯化铵抑制作用效果相差不大。赤红壤中添加DCD对氯化铵的硝化抑制效率有3个高峰期:第1个高峰期在1~3d,第2个高峰期在28d,第3个高峰期在45d。【结论】DCD双氰胺与氯化铵配施能有效抑制氯化铵的硝化作用,氯化铵在赤红壤上使用时以配施0.6%DCD为宜。
译  名:
The inhibitory effect of dicyandiamide on nitrification in latosolic red soil
作  者:
LI Zhuo-yong 1,LIANG Jia-zuo2(1 Cuangxi 307 Nuclear Geology Team,Guigang,Guangxi 537121,China;2 Vegetable Research Institute,Guangxi Academy of Agricultural Sciences,Nanning 530007,China)
关键词:
latosolic red soil;dicyandiamide;ammonia chloride;nitrification;inhibiting effect
摘  要:
[Objective]Dicyandiamide(DCD) is widely used in agricultural production as nitrification inhibitor.The present study was carried out in order to study the inhibitory effect of DCD on ammonium chloride nitrification in lateritic red soil.[Method]An experiment was conducted under aerobic conditions and constant temperature.[Result] The results indicated that adding DCD significantly increased ammonium content and decreased nitrate nitrogen content at the same time.But inhibitory effect varied slightly at 0.6-1.0% concentration of DCD.The results also indicated that the nitrification inhibition efficiency of DCD has three peaks:first peak at 1-3 d,the second at 28 d and the third at 45 d.[Conclusion]Combined application of dicyandiamide and ammonium chloride fertilizer may inhibit the nitrification of ammonium chloride,and it is appropriate to use 0.6% DCD in red soils.

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