Relationship qptical density and mass fraction of modified KHm solution;

Effects of HA-K fertilizers on the absorption and utilization of potassium and the storage root yield in sweet potato for table use;

Effect of HA-K on Corn Development and Factors Forming Yield;

effect of different concentrations HA-K on agronomic characters, physiological Index, potassium content of flue-cured tobacco after 40 days were analyzed.

Effects of potassium humate on ginger root growth and its active oxygen metabolism;

When the solution concentration of humate was 1 g/L and 5 g/L and its pH value was between 3 and 9, potassium humate could keep the pH value of solution between 6 and 7, while sodium humate could keep the pH value between 5 and 6.

While there is no significant difference between potassium contents of the two treatments applied by potassium humate and by potassium sulphate plus potassium dihydrogen phosphate.

0 conductivity gauge show that different modified KHm has differentζ - potentials.

Using the 72-1 spectrophotometer, it can be measured quantificationally that the optical density of the solution decreases while the mass fraction of the modified KHm increases.

According to the peculiarity that sweetpotato and ginger belong to the crop favoring potassium,two kinds of potassium fertilizer including humic acid were prepared and applied in the field experiment of sweetpotato and ginger.

A composite superabsorbent resin(HA-PAA) for agricultura l application was prepared by the surface cross-linking reaction of sulfonated humic acid and poly acrylic acid.