PROBLEM TO BE SOLVED: To provide a powdery granule-discharging device capable of quantitatively discharging powdery granules such as an agrochemical, and suitably usable in a so-called duct-spreading method for spreading a powdery granular agrochemical in a facility such as a greenhouse, to provide an agrochemical spreading apparatus equipped with the device, and to provide a method for spreading such an agrochemical.SOLUTION: The powdery granule-discharging device comprises a container 2 having a discharging port 4 and intended for containing a powdery granular agrochemical 3, a discharging form 20 having a recessed part 203 on part of the flank in contact with the inner surface of the discharging port 4, and a driving mechanism functioning to make a back-and-forth motion of the discharging form 20 relative to the discharging port 4 so that the recessed part 203 be situated inside and outside of the container 2.COPYRIGHT: (C)2008,JPO&INPIT【課題】農薬等の粉粒体を定量的に吐出することができ、粉粒状の農薬を温室ハウス等の施設内に散布する、いわゆるダクト散布法に好適に用いることができる粉粒体吐出装置、この粉粒体吐出装置を備えた農薬散布装置および農薬散布方法を提供する。【解決手段】吐出口4を有し粉粒状の農薬3を収納する容器2と、吐出口4の内面に当接する側面の一部に陥没部203を有する吐出体20と、この吐出体20の陥没部203が容器2の内外に位置するように吐出体20を吐出口4に対し進退させる駆動部とを備える構成とした。【選択図】図1
