吉林省中部地区水稻土主要肥力指标的主成分分析

Correlation of the Physicochemical Indexes of Paddy Soil in Middle Areas of Jilin Province

通过对吉林省中部地区的九台、永吉、德惠、榆树、长春水稻土17种主要肥力指标所进行的相关性分析表明,各样点除pH外,其他指标均达到了极显著水平。全Zn含量较高,Ca、K含量较低,其他元素含量中等,其中,全Zn含量分别高于世界、中国、吉林省平均含量的41.38%、4.80%、8.48%;K含量分别低于世界、中国、吉林省平均含量的1.14%、27.96%、30.52%。通过多变量的主成分分析,确定出3个主成分性状:第一主成分为Mg和N,以榆树水稻土为代表;第二主成分为Zn和P,以德惠水稻土为代表;第三主成分为Ca和Zn,以长春水稻土为代表。说明吉林省中部地区水稻生产应增施K肥和有机肥,同时注意Zn肥的配施。

The correlative analysis on the 17 major fertility index of paddy field in the middle areas of Jilin province, i. e. Jiutai, Yongji, Dehui, Yushu, Changchun indicated that the other indexes all arrived significant level except pH. The content of total Zn is higher, Ca and K are lower, and the other elements are middle. Compare to the world, China and Jilin, the content of Zn is higher about 41.38%, 4.80% and 8.48% respectively; the content of K is lower about 1.14%, 27.96% and 30. 52% separately. Through the multiple variable main component analysis, 3 major component characteristics were ascertained, the first is Mg and N, the paddy soil in Yushu is the typical type like this; the second is Zn and P, in Dehui; the third is Ca and Zn, in Changchun. The experiments results showed that K and organic fertility were need in the middle of Jilin province, and meanwhile followed by Zn fertility.