连续施用磷钾肥对油菜产量及养分吸收的影响  

Effect of P and K fertilizer application on rapeseed yield and nutrient uptake

作　　者：武际[1] 郭熙盛[1] 李孝勇 王文军[1] 朱宏斌[1] 

机构地区：[1]安徽省农业科学院土壤肥料研究所,安徽合肥230031 [2]广德县农技推广中心,安徽广德242220

出　　处：《中国油料作物学报》2006年第2期180-183,共4页Chinese Journal of Oil Crop Sciences

基　　金：安徽省"九五"科技攻关项目(99110062)

摘　　要：在磷、钾素含量较高的黄红壤上研究了连续施用磷钾肥对油菜产量、养分吸收和经济效益的影响。结果表明：施用磷钾肥，可以显著提高油菜产量，增产幅度达45．3％-180％，磷肥效应起主导作用。连续施用磷钾肥有利于养分的协调供应，提高了油菜植株的养分含量和养分吸收量。磷钾肥的施用还能大幅度提高经济效益，三季油菜纯利润平均增加了I372．8-1851．1元／hm^2。Effect of continuous application of phosphorus and potassium fertilizer on rapeseed yield and nutrient uptake in yellow - red soil with high available P and available K was studied. The results indicated that application of P and K fertilizer can notably increase rapeseed yield by 45.3% - 180%. The yield response to P plays a leading role. Continuous application of P and K fertilizer were beneficial to provide balanced nutrient, increased nutrient content and nutrient uptake in rapeseed. Application of P and K fertilizer could raise net income of rapeseed production substantially. The average net income in the three seasons was increased by 1 372. 8 - 1 851. 1 yuan/hm^2.

关 键 词：油菜 磷肥 钾肥 产量 养分 

分 类 号：S565.406.2[农业科学—作物学]