广西河池烟区土壤肥力特征分析
Guangdong Agricultural Sciences(2012)
Abstract
对河池烟区具有代表性的826个土壤样品的pH值、有机质、阳离子交换量、全氮、全磷、全钾和速效氮、有效磷、速效钾等指标进行分析,结果表明:河池烟区土壤pH值总体适宜,少部分土壤偏碱性;有机质、全氮和速效氮含量较为丰富;阳离子交换量处于中等至偏低水平;全磷、全钾和有效磷、速效钾含量偏低;不同县份之间土壤肥力特征差异较为明显。针对河池烟区土壤肥力特征,烤烟种植应适当降低氮肥用量,补充磷肥和钾肥用量,并通过改进施肥方式,提高土壤磷素和钾素有效供应能力。
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Key words
soil fertility,characteristics,flue-cured tobacco
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