农业资源与环境学报2017，Vol.34Issue(2)：161-167,7.DOI:10.13254/j.jare.2016.0248
淮北砂姜黑土区氮钾配施对小麦产量及氮、钾养分吸收利用的影响
Effects of Combined Application of Nitrogen and Potassiumon on Yield and Nutrient Accumulation of Wheat in Huaibei Lime Concretion Black Soil Area, China
摘要
Abstract
To provide theoretical and technical basis for the scientific application of nitrogen(N)and potassium(K)fertilizer in wheat crop-ping in Huaibei lime concretion black soil area, a field experiment was performed to study the effects of different N and K treatments(N:180, 240, 300, 360 kg·hm-2;K:90, 135, 180 kg·hm-2)on wheat yields, absorption of N and K, and fertilizer benefits. The results showed that:(1) The wheat yield under application of N240 K180 reached 7686 kg·hm-2, which was significantly increased by 7.24%comparing with that under N180 K90, and there was no significant differences between the yields under N240 K180 and N360 K180;(2)Compared with the contents of N and K in wheat under N180 K90, those under N240 K180 were significantly increased by 14.67%and 29.53%, respectively;(3)There was a positive interac-tion between the application of N and K fertilizer, and the interaction was significantly correlated with wheat yield at a contribution rate of 14.06%, which consequently increased the partial productivities of N and K fertilizer. Considering wheat yield and fertilizer benefit, the opti-mum application amounts of N and K2O fertilizer were 240 kg·hm-2和180 kg·hm-2 in Huaibei lime concretion black soil area.关键词
氮钾配施/小麦/产量/养分吸收/肥料效益Key words
combined application of N and K/wheat/yield/nutrient absorption/fertilizer benefit分类
农业科技引用本文复制引用
雷之萌,韩上,武际,朱林,汪建来,何贤芳..淮北砂姜黑土区氮钾配施对小麦产量及氮、钾养分吸收利用的影响[J].农业资源与环境学报,2017,34(2):161-167,7.基金项目
公益性行业(农业)科研专项(201503122) （农业）
安徽省农业科学院院长青年创新基金项目(16B1019) （16B1019）
安徽省小麦产业技术体系项目 （）
