| 摘要 |
PROBLEM TO BE SOLVED: To provide a liquid agent for plant culture composed of chitosan effectively used according to applications. SOLUTION: This liquid agent for plant culture is obtained by each dissolving a plurality of kinds of chitosans different in molecular weights into an acid, particularly the liquid agent suitable for the foliar application is obtained by each dissolving a chitosan having 20,000-80,000 molecular weight and a chitosan having 150,000-250,000 molecular weight into an acid, and the liquid agent suitable for soil scattering is obtained by each dissolving the chitosan having 20,000-80,000 molecular weight, the chitosan having 150,000-250,000 molecular weight and a chitosan having 350,000-450,000 molecular weight into an acid. |
