大棚黄瓜早熟栽培氮素肥料运筹试验

为解决黄瓜生产上盲目施肥现象，提高肥料利用率，降低农业投入品对环境的污染，以津春1号黄瓜为试材，采用测土配方施肥技术规范中的有机肥当量试验（X3）实施方案，研究了合肥市庐江县具有代表性的砂质壤土黄瓜种植的施肥模式。研究结果表明，黄瓜栽培中菜园地习惯性氮素养分的施入量不是最佳的施肥量；黄瓜生产中氮素养分施入的多少与产量不成正比；抗逆性好和产量最高的施肥处理是 N2P3K3＋M 组合，即每667 m2大田基施有机肥250 kg、尿素20 kg、普钙55 kg、硫酸钾21 kg，追施尿素8.5 kg、硫酸钾4.8 kg，产量为2871.67 kg。

Nitrogen Fertilizer Management Test of Greenhouse Cucumber in Early-maturing Cultivation

To solve the problem of excessive application of fertilizers in cucumber production, improve fertilizer utilization rate and reduce the environmental pollution caused by agricultural inputs, we used the organic fertilizer equivalent test （X3） in Technical Specifications of Soil Testing and Formulated Fertilization, and studied suitable fertilization model for cucumber cultivation on representative sandy loam soil in Lujiang county of Hefei city. The results showed that, the traditional application amount of nitrogen fertilizer was not the optimum in cucumber cultivation, and the cucumber yield was not directly proportional to the application amount of nitrogen fertilizer. The optimum fertilization treatment was N2P3K3＋M （organic fertilizer）, and the fertilization treatment contained base fertilizer, that was organic fertilizer 250 kg/667 m2, uea 20 kg/667 m2, superphosphate 55 kg/667 m2 and potassium sulfate 21 kg/667 m2, and topdressing, that was urea 8.5 kg/667 m2 and potassium sulfate 4.8 kg/667 m2, under the fertilization condition, the cucumber plants had good stress resistance and the cucumber yield was highest as 2 871.67 kg.