| The oil absorption and hydrophobic properties of straw fiber increased through modification, the slowrelease
coated urea was prepared with the modified straw by principle of industrial disc granulator, and its fertilizer
efficiency on corn was studied by field test. The results indicated that after modification, the oil absorption increased
by 50.5% ; FTIR showed that carbonyl absorption enhanced, the degree of acetylation increased; high power
microscope and SEM showed that the coating layer formed a dense film structure. The field test results showed that,
compared to control group, by application of the slow -release coated urea with modified straw, the chlorophyll
content, stem circumference, plant height and leaf area of corn significantly increased, indicating that the slowrelease
coated urea had good release effect and could improve crop yield to a certain extent |
