CAJ | 학술논문

为了解湘西州植烟土壤有效磷含量区域特征，分析了湘西州7个植烟县488个土壤样本的有效磷含量状况。结果表明：（1）湘西州植烟土壤有效磷含量处于偏高水平，平均值为35.35 mg／kg，变异系数为70.60％，25.93％的样本处于适宜范围内；（2）植烟土壤有效磷含量在不同县之间的差异达极显著水平，龙山县植烟土壤有效磷含量较高；（3）不同植烟土壤类型的有效磷含量差异达极显著水平，黄棕壤的有效磷含量极显著高于水稻土、石灰土、红壤、红灰土等；（4）植烟土壤有效磷含量有随海拔升高而增高的趋势；（5）湘西州植烟土壤有效磷含量总体上呈北部高、中部低的分布趋势。
위료해상서주식연토양유효린함량구역특정，분석료상서주7개식연현488개토양양본적유효린함량상황。결과표명：（1）상서주식연토양유효린함량처우편고수평，평균치위35.35 mg／kg，변이계수위70.60％，25.93％적양본처우괄의범위내；（2）식연토양유효린함량재불동현지간적차이체겁현저수평，룡산현식연토양유효린함량교고；（3）불동식연토양류형적유효린함량차이체겁현저수평，황종양적유효린함량겁현저고우수도토、석회토、홍양、홍회토등；（4）식연토양유효린함량유수해발승고이증고적추세；（5）상서주식연토양유효린함량총체상정북부고、중부저적분포추세。
In order to understand the characteristic of available P contents in surface soils of Xiangxi tobacco -growing are-as,the distribution of available P contents were analyzed by collected 488 soil samples.The results were as follows:(1) The available P contents in the surface soil was an abundant supply for tobacco cultivation,with a mean of 35.35mg/kg and variation coefficient of 70.60%.About 25.93% of the soil samples had available P contents for suitable tobacco cultiva-tion.(2)The available P contents in surface soils of Longshan county was extremely significant more than others.(3)The available P contents of surface soils in yellow -brown soils was extremely significant more than that in paddy field,rendzina soils,red soils and red ash soil.(4)The available P contents were increasing with the rise of altitude.(5)Kriging interpo-lation map indicated that the spatial distributions of available P was high in north areas and was low in centre areas.