The present invention relates to a sprayer for agricultural chemicals. According to the configuration of the present invention, a sprayer (100) for agricultural chemicals is configured such that an injection part (A) and a driving part (B) are integrally formed. The injection part (A) has a tube (2), through which liquid chemicals such as agricultural chemicals, a liquid fertilizer, or the like are supplied, outside or inside a tubular body (1) having a diameter of 20 to 50 mm, wherein a tip end of the tube (2) is installed to vertically protrude into a tip end of the tubular body (1) and a rear end of the tube (2) is connected to a chemical tank (3) that is a separate configuration. Moreover, a valve (4) that may finely adjust the amount of the supplied chemicals is installed at a predetermined location of the tube (2). The driving part (B) has a configuration connected to the rear end of the tubular body (1), and includes a battery (5), a charging small-scale blower (6) that is operated by the battery (5), and an air supply tube (7) connected to a pipeline of a tip end of the blower (6) to supply a portion of air generated and ejected by the blower (6) to the chemical tank (3) that is the separate configuration. According to the present invention, the sprayer can be used for multiple purposes by spraying liquid chemicals or fertilizers farther and widely to prevent disasters of fruit trees in addition to tall and short upland crops and to supply nutrient. Moreover, disaster prevention efficiency can be maximized by significantly reducing manpower and time to prevent disasters more quickly and conveniently as compared with a conventional sprayer.COPYRIGHT KIPO 2020본 발명은 농업용 송풍 약대에 관한 것이다.구성에 있어서, 송풍약대(100)를 분사부(A)와 구동부(B)가 일체화된 구성으로 형성하되, 분사부(A)는 20~50mm 직경의 관체(1) 외부 또는 내부에 농약이나 액비 등의 액상의 약재가 공급되는 튜브(2)를 설치하되, 상기 튜브(2)의 선단은 관체(1) 선단 내부에 수직으로 돌출되게끔 설치하면서 후미는 별도 구성의 약재탱크(3)에 연결시킬 수 있게 하고, 상기 튜브(2)의 소정 위치에는 약재의 공급량을 미세 조절할 수 있는 밸브(4)를 설치 구성하며, 구동부(B)는 상기 관체(1) 후미에 연
