棕壤土区施肥参数对冬小麦产量与肥料利用率的影响  

Effect of Fertilization Parameters on Winter Wheat Yields and Fertilizer Utilization Efficiency in Brown Soil Zone

作　　者：吕世祝[1] 刘建军[1] 周海燕[1] 吴德敏[1] 赵全桂[1] 柳小红[1] 刘青兰[1] 

机构地区：[1]山东省招远市农业技术推广中心,山东招远265400

出　　处：《安徽农业科学》2007年第17期5209-5210,共2页Journal of Anhui Agricultural Sciences

基　　金：全国测土配方施肥试点补贴资金项目

摘　　要：在招远市6个乡镇进行了冬小麦施肥参数试验。结果表明:磷肥增产效果与土壤有效磷含量密切相关,土壤有效磷达到20mg/kg,磷素属高肥力水平。土壤速效钾含量越低,施肥增产效果越显著,土壤有效钾含量<80 mg/kg,施用钾肥的经济效益最高。不同土壤肥力对产量和氮磷钾肥农学利用率的影响的试验结果表明,高、中、低产麦田全肥区的产量最高,并且全肥区的氮磷钾肥的农学利用率高出缺素区,因此,要提高肥料的农学利用率,必须氮磷钾配合施用。Fertilizer parameter experiment of winter wheat was carried out in six towns of Zhaoyuan city. Results indicated that yield increase effect of phosphate fertilizer was tightly related to Olsen-P content, When Olsen-P content reached 20 mg/kg, phosphorus belonged to high fertility level. Wheat yield increased with the decrease of fast -acting potassium. When the content of fast -acting potassium was less than 80 mg/kg, economic benefit of potassium fertilization was the highest. In high, middle and low yield field, wheat yield of district-wide fertilizer field was the highest. And its N, P and K fertilizer utilization efficiency was higher than that in district-tack fertilizer field. Therefore, N, P and K fertilizer should be applied together in order to improve agricultural utilization efficiency of the fertilizer.

关 键 词：棕壤土区 冬小麦 产量 肥料利用率 

分 类 号：S15[农业科学—土壤学]