直播油菜施肥效应及适宜肥料用量研究  

Study on the effects of NPK fertilizers and optimum fertilizer rate on direct-seeding rapeseed

作　　者：邹娟[1] 鲁剑巍[1] 李银水[1] 李志玉[2] 陈防[3] 

机构地区：[1]华中农业大学资源与环境学院,武汉430070 [2]中国农业科学院油料作物研究所,武汉430062 [3]中国科学院武汉植物园,武汉430074

出　　处：《中国油料作物学报》2008年第1期90-94,共5页Chinese Journal of Oil Crop Sciences

基　　金：国家十一五科技支撑课题(2006BAD21B03、2006BAD25B01);国际植物营养研究所(IPNI)合作项目(Hubei-30)

摘　　要：采用"3414"肥料效应试验设计方案进行田间试验,探讨直播油菜氮磷钾(NPK)肥效应及肥料的适宜用量。结果表明,NPK配合施用显著提高了油菜产量,三因素增产大小顺序为N>K>P;油菜各器官养分含量和积累量随相应养分的施用明显提高;试验条件下,N、P2O5和K2O用量为180、30和90kg/hm2时,氮磷钾肥表观利用率最大,分别为35.1%、23.1%和73.9%。用一元二次肥料效应模型对试验结果进行模拟,结果显示,直播油菜N、P2O5和K2O适宜施用量为212、23和112kg/hm2。Based on the ＂3414＂ fertilizer experiment protocol, a field experiment was conducted to study effects of NPK fertilizers and optimum fertilizer rate on direct-seeding rapeseed. The results showed that the coordinated application of nitrogen, phosphorous and potassium increased the yield of rapeseed significantly, and their effect on the yield of rapeseed could be ranked as N〉K〉P;nutrient content and uptake of organs for rapeseed was improved with the application of the corresponding nutrient; the most effective combination utilized N 35.1%, P 23.1% and K 73.9% when applied N 180, P2O5 30 and K2O 90 kg/hm2 respectively. According to univariate quadratic model, the most appropriate fertilization for direct-seeding rapeseed was N 212 kg/hm^2、P2O5 23 kg/hm^2 and K2O 112 kg/hm^2,respectively.

关 键 词：直播油菜 “3414”试验 施肥效应 适宜肥料用量 

分 类 号：S565.406[农业科学—作物学]