This creation is to provide a plant spacing control device, especially for adjusting the rotation speed of the seed drop wheel of the planter to achieve the effect of adjusting the plant spacing； its structural design is mainly to configure a control on one side of the planter The control box is equipped with multiple sets of transmission gears with different gear ratios, a driven gear, and a transmission gear. There is also a dial control gear set to dial and control the transmission relationship of different transmission gears to the transmission gear. The driven gear system is referred to and transmitted by the output gear of the drive motor, and then the transmission gear is driven by the transmission gear to drive the working spindle to rotate, so that the working spindle can switch its rotation speed according to the regulation and switching of the transmission gear, so that the upper assembly The multiple seed drop runners then show different rotation speeds, and coordinate with the seed drop of the seed trough to achieve the control of the plant spacing, so that it can be more convenient and flexible to implement in response to the needs of various crops in different spacings. .本創作係提供一種植株間距調控裝置，特別是針對播種機之落籽轉輪的旋轉速度進行調控，以達到植株間距之調整功效者；其結構設計上，主要是於播種機一側配置一調控箱，該調控箱內部配置有複數組不同大小齒數比之變速齒輪、一從動齒輪、以及一傳動齒輪，另設有一撥控齒輪組得以撥控切換不同變速齒輪對傳動齒輪的傳動關係，該從動齒輪係受驅動馬達之輸出齒輪所轉介傳動，再透過變速齒輪驅動傳動齒輪而帶動工作主軸轉動，使工作主軸得以依變速齒輪的調控切換而變換其轉動速度，令其上組設之複數落籽轉輪隨之呈現不同的旋轉速度，配合種籽槽的落籽而達到其植株間距的調控，使其在因應各種農作物之不同間距栽種需求時，能獲得更便利而靈活之實施者。
