针对浙江省临安市耕地土壤有效钾含量严重不足和高产小麦需钾较多的矛盾，开展小麦施用钾肥试验。结果表明：小麦施钾肥具有显著的增产作用，可提高产量5.84％～12.16％，其增产机制主要表现为小麦施钾肥后，植株抗逆性增强，分蘖成穗率高，有效穗多，千粒重增加。 Aiming at the serious deficiency of available potassium in arable land and the need of more potassium in high-yield wheat in Lin’an City, Zhejiang Province, the experiment of applying potassium fertilizer was carried out. The results showed that: Potassium fertilizer significantly increased wheat yield, yield increased 5.84% ~ 12.16%, the main mechanism of its yield-increasing mechanism of wheat potassium application, increased plant stress resistance, tillering rate of panicles, effective panicles, 1000-grain weight increase .