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利用盆栽试验研究了土壤水分和施钾对幼龄茶树生长的影响。在４５％田间持水量处理一个月后所有茶树均不能成活，但在７５％田间持水量以上时所有茶苗均能成活，施钾显著地提高了茶树的成活率。提高土壤水分或在干旱条件下施钾显著地增加茶树的生物产量，而且施钾还极显著地提高了茶树根系的生长和根／冠比，促进了茶树对钾的吸收及提高了叶片和根部钾的浓度，从而增强了茶树的抗旱能力。田间试验表明，施钾对成龄茶园夏茶有明显的增产作用，增加施钾量在水分正常年份并无明显效应，但在干旱年份却有显著的增产效应。
Pot experiments were conducted to study the effects of soil moisture and potassium fertilization on the growth of young tea trees. All of the tea trees could not survive after 45% field water treatment for one month, but all the tea seedlings survived above 75% field capacity. Potassium application significantly increased the survival rate of tea trees. Increasing soil moisture or applying potassium under drought conditions significantly increased the biological yield of tea plants. In addition, potassium application significantly increased root growth and root / shoot ratio of tea plants, promoted the absorption of potassium by tea plants and increased the leaf and root Potassium concentration, thereby enhancing the drought resistance of tea trees. Field experiments showed that applying K fertilizer significantly increased the yield of summer tea in mature tea plantation, and increased the amount of K fertilizer in the normal years of water without obvious effect, but had significant yield increase effect in drought year.