CAJ | 학술논문

为了解植烟土壤有效磷含量区域特征,分析了邵阳烟区1790个土壤耕层样本的有效磷含量分布状况。结果表明：①邵阳烟区耕层土壤有效磷含量处于偏高水平,平均值为25.25 mg/kg,变异系数为97.6%,处于适宜范围内的样本占27.99%；于邵阳县和新宁县耕层土壤有效磷含量极显著高于隆回县；③土壤有效磷含量有随耕层土壤pH升高而降低的趋势；榆土壤有效磷含量有随有机质提高而增加的趋势；虞土壤有效磷含量总体上有从中部分别向西南部和北部递减的分布趋势。
위료해식연토양유효린함량구역특정,분석료소양연구1790개토양경층양본적유효린함량분포상황。결과표명：①소양연구경층토양유효린함량처우편고수평,평균치위25.25 mg/kg,변이계수위97.6%,처우괄의범위내적양본점27.99%；우소양현화신저현경층토양유효린함량겁현저고우륭회현；③토양유효린함량유수경층토양pH승고이강저적추세；유토양유효린함량유수유궤질제고이증가적추세；우토양유효린함량총체상유종중부분별향서남부화북부체감적분포추세。
In order to find out the characteristic of available P contents in surface soils in Shangyang tobacco-growing are-as, the distribution of available P contents in 1 790 soil samples were analyzed. The results were as follows:(1) The a-vailable P contents in the surface soil in Shaoyang tobacco-growing area was on the high side,with a mean of 25.25 mg/kg and variation coefficient of 97.6%. About 27.99% of the soil samples had available P contents for suitable tobacco culti-vation. (2) The available P contents of surface soils in Shaoyang county and Xinning county were extremely significant more than that of Longhui county. (3) The contents of available P was decreased with the rise of pH in surface soils of Shaoyang tobacco growing areas. (4) The contents of available P increased with the rise of organic matter in surface soils of Shaoyang tobacco growing areas. (5) Kriging interpolation map indicated that the spatial distributions of available P re-duced from the middle to the northern and south-western.