CAJ | 학술논문

在海南省陵水县采集3065个土壤样品．参照第二次土壤普查的资料，以有机质、碱解氮、有效磷、速效钾的变化为依据．分析这20多年来这些养分的时空变异。研究结果表明，陵水县有效磷的含量相比较20多年前有了一定的提高。碱解氮和速效钾都有不同程度的降低，有机质的含量有下降趋势，养分空间分布不均匀．说明陵水县存在一定程度施肥结构不合理的问题。
재해남성릉수현채집3065개토양양품．삼조제이차토양보사적자료，이유궤질、감해담、유효린、속효갑적변화위의거．분석저20다년래저사양분적시공변이。연구결과표명，릉수현유효린적함량상비교20다년전유료일정적제고。감해담화속효갑도유불동정도적강저，유궤질적함량유하강추세，양분공간분포불균균．설명릉수현존재일정정도시비결구불합리적문제。
In order to offer farmers more reasonable fertilization scheme, to promote sustainable agricultural development and environmental protection. The characteristics of the spatial-temporal variability of nutrients in paddy soil for last more 20 years had been analyzed on the basis of the contents of organic matter, available nitrogen, available phosphorous, and available potassium, collecting 3 065 soil samples in Lingshui and comparing with The Second Soil Survey of Lingshui. The results showed that the available phosphorous in Lingshui was higher than those of more than 20 years ago, and the content of available nitrogen and potassium were decreased respectively, and the organic matter was moderate, the soil nutrient content was different in spatial distribution. The results further revealed the unbalance in soil fertilization.