PROBLEM TO BE SOLVED: To provide a liquid fertilizer mixer capable of easily mixing water for irrigation and liquid fertilizer, and in particular, capable of stably delivering a mixed nutrient solution having a predetermined concentration. SOLUTION: The liquid fertilizer mixer 10 mixes water for irrigation and liquid fertilizer, and the inside of the mixer main body 12 and the inside of the mixer main body 12 are divided into upper and lower parts to form an upper chamber U and a lower chamber D. To introduce water and liquid fertilizer into the inflow chamber R, which is connected to the hole plate 14, the partition wall 16 that divides the upper chamber U into left and right to form the inflow chamber R and the delivery chamber L, and the side wall 18r of the inflow chamber R. The introduction pipe 20 is connected to the side wall 18l of the delivery chamber L, and is connected to the delivery pipe 22 for delivering the mixed nutrient solution of water and liquid fertilizer from the delivery chamber L, and the introduction pipe 20 to mix the liquid fertilizer in the water. The inflow chamber R and the delivery chamber L in the mixer main body 12 are made conductive with the lower chamber D by a plurality of small holes 15 provided in the perforated plate 14, including the introduction portion liquid fertilizer mixing pipe 24. There is. [Selection diagram] Fig. 1【課題】 灌水用の水と液肥とを容易に混合することができ、特に、所定濃度の混合養液を安定的に送出することができる液肥混合器を提供する。【解決手段】 灌水用の水と液肥とを混合する液肥混合器１０であって、混合器本体１２と、混合器本体１２内を上下に二分して上室Ｕと下室Ｄを形成する有孔板１４と、上室Ｕ内を左右に二分して流入室Ｒと送出室Ｌを形成する隔壁１６と、流入室Ｒの側壁１８ｒに接続され、流入室Ｒに水と液肥を導入するための導入管２０と、送出室Ｌの側壁１８ｌに接続され、送出室Ｌから水と液肥との混合養液を送出するための送出管２２と、導入管２０に接続され、水に液肥を混入するための導入部液肥混入管２４とを含んで成り、混合器本体１２内における流入室Ｒと送出室Ｌとが、有孔板１４が備える複数の小孔１５によって下室Ｄと導通している。【選択図】 図１
