黄瓜主要根群分布在20厘米左右的土层,入土浅而细弱,对养份吸收力弱。幼苗有4～5叶真叶后,生长开始加快,节间长度增加,开始吐须抽蔓;当进入初花至结果期,是一生中生长最旺盛、又是开花结果形成产量的阶段。在整个生长期中,黄瓜对氮磷钾吸收量比例是氮30%、磷24%、钾46%,增施 Cucumber main root distribution in about 20 cm of soil, soil shallow and weak, weak absorption of nutrients. Seedlings with 4 to 5 leaves really leaves, the growth began to accelerate, internode length increases, began to vomit Suman; when the beginning of flowering to the fruiting period, is the most vigorous growth of life, but also the flowering stage of the formation of yield. Throughout the growth period, the ratio of nitrogen, phosphorus and potassium uptake by cucumber was 30% nitrogen, 24% phosphorus and 46% potassium,