以“芬达F1”番茄为试材,研究了不同施钾量对番茄产量和经济效益的影响。结果表明:在银川平原的温室土壤中,钾肥对温室番茄的增产有一定的作用,但施量过大,增产作用反而不明显,当667m2施纯钾达到63.8kg时可实现产量最大化,而当667m2施纯钾量达到20kg时,边际产量和投入产出比达到最优。 Using “Fanta F1” tomato as test material, the effects of different K application rates on tomato yield and economic benefits were studied. The results showed that in the greenhouse soil of Yinchuan Plain, potash fertilizer had a certain effect on the increase of greenhouse tomato yield. However, the application of potassium fertilizer was too large, but the effect of increasing yield was not obvious. When the pure potassium of 667m2 reached 63.8kg, the yield could be maximized, When 667m2 applied pure potassium reached 20kg, marginal yield and input-output ratio to achieve the best.