白菜氮磷钾肥效及其适宜用量研究

摘要

进行白菜3414田间肥料试验，结果表明：氮、钾肥对白菜产量的影响远高于磷肥；每667m2最佳经济效益施肥量为N15kg、P2O5 4．8kg、K2O 14kg，白菜产量为2709kg，经济效益达4721．91元。%Field trials on fertilizer efficiency to Chinese cabbage were carried out by using ＂3414＂ fertilizer experiment design. The results showed that nitrogen and potassium gave more influence to the yield of cabbage than phosphorous, the optimum fertilizer rates of N, P2o5 and K20 for the economic benefit were 15, 4.8 and 14 kg/667m2 （225, 72 and 210 kg/hm2） respectively, and the yield was 2,709kg/667m2 （40. 635 kg/hm2） and the benefit was 3 361. l lyuan/667m2 （50416.65 yuan/ hm2 ）.