海藻酸尿素对夏玉米产量和氮肥利用率的影响  

Effect of applying alginic acid urea on summer maize yield and N use efficiency

作　　者：周勇明 商照聪 宝德俊[2] 袁亮[3] 

机构地区：[1]国家化肥质量监督检测中心(上海),上海310000 [2]河南省农业科学院植物营养与资源环境研究所,河南郑州450002 [3]中国农业科学院农业资源与农业区划研究所,北京100081

出　　处：《中国土壤与肥料》2014年第3期23-26,共4页Soil and Fertilizer Sciences in China

基　　金："十二五"国家科技支撑计划课题(2013BAD05B04)

摘　　要：为了验证海藻酸尿素产品的应用效果,在河南省驻马店玉米上开展了田间效果验证试验。结果表明,海藻酸尿素较普通尿素平均增产5.32%。与普通尿素相比,海藻酸尿素可显著提高玉米的经济系数,在施纯氮90和180 kg/hm2水平下,海藻酸尿素可显著提高玉米产量和籽粒吸氮量,特别是在施纯氮180 kg/hm2水平下,海藻酸尿素显著提高氮肥表观利用率和农学效率,分别较普通尿素提高了2.94个百分点和26%。In order to study the effect of alginic acid urea on crops,experiment on maize was conducted in Zhumadian city,Henan province.The result showed that compared to the urea treatment,the average maize grain yields were increased by 5.32% when applied alginic acid urea,and N uptake of alginic acid urea treatments were significantly higher under both N 90 kg/hm2 and N 180 kg/hm2 application rates.Application of alginic acid urea could increase maize economic coefficient obviously than urea.N apparent recovery and agronomic efficiency of alginic acid urea treatment was increased by 2.94 percentage points and 26% higher than urea treatment respectively.

关 键 词：海藻酸尿素 玉米 产量 氮肥表观利用率 农学效率 

分 类 号：S513[农业科学—作物学]