Principal component analysis of effects of PGPR on nutrients and microbial quantity in rhizosphere soil of Ziaiphus jujuba cv. Huizao orchard
In order to obtain superiority strains good for gray jujube growth and development, through a field test, the effects of combination bacteria (P13K7 and P13K24), single function bacteria (P13, P15, K7, K24) and the control (CK) on nutrients and microbial quantity in Ziaiphus jujuba cv. Huizao rhizosphere soil were researched. Eight indexes were simplified into two principal components using the method of principal component analysis, including soil pH value, organic matter content, alkali-hydrolyzable nitrogen content, rapid available phosphorus content, rapid available potassium content, bacteria quantity, actinomycetes quantity and fungi quantity. Information amount contained in the two principal components accounted for 90.78%of total information amount. The results showed that:compared with the control, application of PGPR could improve soil nutrients and microbial quantity. The combination bacteria P13K24 had the best application effect according to the comprehensive evaluation results of the soil indexes.
NETL
NSTL
万方数据
维普
