GbEng
农药，农用化学品用来增加作物产量的化学品，如激素、杀菌剂、杀虫剂 A chemical, such as a hormone, a fungicide, or an insecticide, that improves the production of crops.
农业生物学；土壤生物学关于植物养分和与土壤条件相关的生长的研究，尤其是对判定如何增加农作物产量方法的研究 The study of plant nutrition and growth as related to soil condition, especially to determine ways to increase crop yield.