Integrated Evaluation of Soil Nutrient in Tobacco-growing Area of Shidian County
YANG Xi-yong;DUAN Bi-ting;WANG Chao-jun;YANG Hai-tao;YANG Kun;ZHANG Ping;DAI Shu-wei;LIU Hong-hua;Yunnan Tobacco Company Baoshan City Company Shidian Branch;
The nutrient of 781 soil samples were analyzed and evaluated by the Factor Analysis and Hierachical Cluster Analysis in this paper,in order to provide scientific and reasonable fertilization scheme for characteristic and high-quality tobacco production in tobacco-growing area of Shidian County. The results showed that the soil fertility of 17 samples were the highest,accounting for 2.18% of the total;119 samples were the second,accounting for 15.24% of the total;423 samples were the third,accounting for 54.16% of the total;222 samples were the lowest,accounting for 28.42%of the total. Therefore,the 4 500 kg/hm2 manure and 60-75 kg/hm2 pure nitrogen of compound-fertilizer were recommended for the higher soil fertility of fields,and 7 500-15 000 kg/hm2 manure and 90-120 kg/hm2 pure nitrogen of compound-fertilizer were recommended for the lower soil fertility of fields.
【CateGory Index】： S158