| 摘要 |
PROBLEM TO BE SOLVED: To provide a fertilizer applicator capable of uniformizing the amount of fertilizer application per area even in case a fertilizer to be used is changed. SOLUTION: The fertilizer applicator 1 for applying a fertilizer while moving over a farm by unloading the fertilizer via the opening 51 of a hopper 2 reserving the fertilizer FE therein includes a means for adjusting the divergence of the opening 51 so as to uniformize the amount of fertilizer application per area based on a preset indicator for each kind of fertilizer. As the indicator, a specific value for each fertilizer determined as a physical quantity concerning fluidity for each kind of fertilizer can be used. With this fertilizer applicator 1, the divergence of the opening 51 of the hopper 2 is adjusted by the relevant means based on the above indicator. Therefore, by using such an indicator also paying regard to specific gravity and fluidity characteristics varied for each fertilizer, the amount of fertilizer application per farm area can be uniformized. COPYRIGHT: (C)2005,JPO&NCIPI
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