保护地黄瓜钾肥适宜用量研究

Study on Optimum Application of Potassium Fertilizer in Protected Cultivation Cucumber

[目的]开展黄瓜适宜钾肥用量研究,明确保护地黄瓜适宜的钾肥用量,实现高效生产。[方法]试验设5个钾肥(K_2O)用量处理,并对黄瓜产量和品质相关指标进行测定。[结果]施用钾肥(K_2O)300 kg/hm^2可显著增加黄瓜产量和效益,比不施钾处理增产7.7%,增收6 223元/hm^2。增施钾肥还可提高黄瓜果实中维生素C含量,但过量施钾会降低可溶性总糖含量。根据黄瓜钾肥的效应方程,适宜施钾(K_2O)量为321 kg/hm^2。[结论]合理施用钾肥可提高黄瓜产量改善果实品质。

[Objectivel The aim was to make sure the suitable application of potassium fertilizer and improve the yield and production efficiency of cucumber. Study was carried out on the suitable amount of potassium fertilizer for cucumber. [Method] The experiment carried out 5 treatments with the application of potassium fertilizer （K20） of 0, 100, 200, 400 kg/hm^2 respectively. The indexes of cucumber yield and quality were determined. [Result] Under the application of 300 kg/hm^2 There was an increasing yield of 7.7% for cucumber compared with that without potassium treatment. And it could increase income by 6 223 Yuan/hm^2. According to the potassium fertilizer effect equation, the optimum application of potassium （K2O） was 321 kg/hm^2. The application of potassium fertilizer increased the content of vitamin C in Cueumber, but excessive potassium application decreased the total soluble sugar content.[Conelusion] Reasonable application of potassium fertilizer could improve cucumber yield and fruit quality.