| 摘要 |
PROBLEM TO BE SOLVED: To provide a fertilizer particle composition suitable for aerial spraying, causing less scattering outside the targeting area affected by wind in the aerial spraying by an unmanned helicopter or the like. SOLUTION: This fertilizer particle composition for aerial spraying is characterized in that the bulk density is≥1.0 g/cm<SP>3</SP>, particles passing through a sieve with 2.36 mm sieve opening are≤10 wt.% in the whole, and the average ratio of the enveloping circumference length to the circumference length obtained from a projected image of the particle to a vertical direction with respect to a horizontal plane is≥0.95 in a state where the particle remains stationary at a most stable posture on the horizontal plane. COPYRIGHT: (C)2007,JPO&INPIT
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