| 摘要 |
<p>Microcrystalline chitosan is used in seed encrusting in the form of liquid dispersion containing 0.0001-10 wt % of polymer characterized by average molecular weight not lower than 1000, preferably 10 000-100 000, water retention value ranging from 200 to 5000 % deacetylation degree not lower than 35 %, particle size in the range of 0.1-100 νm and energy of hydrogen bonds in a form of film of 10-25 kJ/mol, preferably 10-20 kJ/mol. Said liquid dispersion is introduced by spraying or mixing for 1-30 minutes with a content of polymer not lower than 0.01 wt %, whereafter the excess of solvent is removed and polymer film covering the seed is formed.</p> |
