等氮条件下施肥方式对夏玉米产量及土壤养分吸收利用的影响  

Effects of Different Fertilizer Treatments under Equal Nitrogen Level on the Yield, Soil Nutrient Uptake and Utilization of Summer Maize

作　　者：杨峰[1] 闫秋艳[1] 鲁晋秀[1] 李峰[1] 王苗[1] 董飞[1] 

机构地区：[1]山西省农业科学院小麦研究所,山西临汾041000

出　　处：《玉米科学》2016年第6期136-143,共8页Journal of Maize Sciences

基　　金：山西省科技攻关项目(20140311001-1D);山西省农业科学院攻关项目(YGG1422);山西省农业科学院博士研究基金(YBSJJ1504)

摘　　要：施等氮量225 kg/hm2条件下,研究不同施肥方式对夏玉米产量及其构成因素、不同生育期植株对养分吸收及0-20 cm和21-40 cm土壤速效养分含量的动态变化,明确不同施肥方式对夏玉米的增产效应。结果表明,施肥均不同程度增加夏玉米产量,增产16.48%-48.15%,收获指数增加7.81%-15.52%。缓控释肥处理对夏玉米产量提高作用明显,最高达9 697.50 kg/hm2。缓控释肥处理在玉米不同生育期土壤养分残留量呈低-高-低的趋势,能较好协调土壤养分供应与夏玉米地上部养分吸收,氮肥农学效率、氮肥偏生产力和氮肥表观利用率均较高,利于获得高产。In order to evaluate the effects of different fertilizer treatments on yield increasing and provide refer-ence to fertilize technology for summer maize, the effect of different fertilize treatments on yield and its components,nutrient uptake in different growth period and available nutrient content in soil layer 0-20 cm and 21-40 cm wereanalyzed under the condition of equal N level（225 kg/ha）. The result showed that control to CK, summer maize yieldwas increased under fertilize treatments, ranged from 16.48% to 48.15%, harvest index increase extent from 0.09 to0.11. Controlled-release fertilizer of T5 and T6 had perfect effect on yield improving of summer maize under equalN level, the highest grain yield was 9 697.50 kg/ha, which was 48.15% higher than CK treatment. It showed a low-high-low trend soil nutrient residue with the process of growth period. On equal N level, application of controlled-release could perfectly coordinate soil nutrient supply and above-ground growth of summer maize and beneficial tohigher yield and nitrogen utilization efficiency, which was beneficial to higher yield.

关 键 词：夏玉米 施肥 产量 养分吸收 

分 类 号：S513.062[农业科学—作物学]