Transfer and accumulation of phosphorus in the calcareous purple soil in a long-term fertilizer experiment;

Effect of fertilizer combination on yield and quality of cabbage on acidic purple soil;

The desorption characteristics of cadmium in acidic purple soil was studied,and the effects of pH value and organic acid were examined.

In a pot experiment,3 soils(acidic yellow soil,neutral purple soil and calcareous purple soil),mixed up with peat,vermiculite,rice husk,sawdust or sand,were used as growth media to study their effects on the growth of Eucalyptus maideni F.

Organic-inorganic compound fertilizers were applied to 2 neutral purple soils in Chongqing to study their effects on the yield and nitrogen recovery of the rice crop and on nutrient content in the soil.

Nutrients absorption and nodulation ability of alfalfas in acid purple soil;

Aiming at Mo、 B、 P deficient acid purple soil from main peanut cultivated areas in Sichuan, and VA mycorrhiza high effective accepting P ability, We developed a new type of inoculant by putting peanut bradyrhizobial strain and trace element Mo、B together, and made scientific researchs on the effect of combined application of above new type of inoculant and VA.

Distribution of Organic Carbon in Purple Paddy Soils;

Microbe activity in alder-cypress mixing forest of calcareous purple soil;

CEC(cation exchange capacity) in a calcareous purple soil was calculated by determining K~+ loss after cation exchange through flame photometric analysis.

This paper dealt with the clay mineral compositions of some calcareous purple soils from Yunnan, Guizhou, Sichuan, Anhui provinces and yellow soil from Guizhou.