粉体の物理的性状と散布むら

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書誌事項

タイトル別名
  • Effects of Physical Properties of Dusts on Deposit Distribution
  • 粉体の物理的性状と散布むら〔英文〕
  • フンタイ ノ ブツリテキ セイジョウ ト サンプ ムラ エイブン
  • Studies on the Pest Control Method Utilizing Boom-type Blow Heads in Paddy Fields (Part 3)

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抄録

Effects of physical properties of dusts on deposit distribution on application with a boom-type blow head was investigated by using dust preparations containing no active ingredient. The amount of dust deposited below the basal zone of the blow head was positively correlated with the percentage of particles less than 10μm in diameter and negatively with the mean diameter of the particles. From the basal to the middle zone, the amount was positively correlated with the flowability and the percentage of particles less than 10μm and negatively with the bulk density. From the middle to the end zone, distribution was positively correlated with the bulk density, the mean particle diameter and the percentage of particles more than 31μm, and negatively with the drift index and the percentage of particles less than 10μm. At the tip of the blow head, distribution was negatively correlated with the mean diameter and the percentage of particles of 31 to 50μm. When the shutter lever was set at 6/10, there was a significantly positive correlation between the mean particle diameter and the discharge rate. When less-drifting dust (DL) was applied at a 6/10 shutter opening used for regular dust (RD), the discharge rate was extremely high, appreciably reduced at a shutter opening of 5/10.

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