大棚黄瓜高产优化施肥技术研究

Study on the Optimum Fertilization Technology of Cucumber

采用“3414”二次回归设计, 以氮、磷、钾为供试因子, 黄瓜产量为目标函数, 对连作12年冬棚黄瓜高肥力土壤施肥数学模型进行了研究。根据建立的数学模型获得了优化施肥技术方案: 施入尿素607. 8kg/hm2、过磷酸钙455 .55kg/hm2 和硫酸钾917 .25kg/hm2时, 产量可达67. 643 7kg/hm2。

The studies were implemented in the plastic house conti nu ously cropped cucumber for twelve years.The fertilizer effect on cucumber was i nvestigated by using the '3414'balance application design to build the mathemati cal model for the relationship between yield and application scheme,the optimum fertilization scheme was obtained from the model,that is 607.8 kg/hm2urea,45 5.55 kg/hm2 superphosphate and 917.25 kg/hm2 potassium sulphate,and the yi eld could reach 67 643.7 kg/hm2.