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

雷之萌; 韩上; 武际; 朱林; 汪建来; 何贤芳

文章摘要

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

Received:October 13, 2016

DOI：10.13254/j.jare.2016.0248

中文关键词: 氮钾配施，小麦，产量，养分吸收，肥料效益

英文关键词: combined application of N and K, wheat, yield, nutrient absorption, fertilizer benefit

基金项目:公益性行业（农业）科研专项（201503122）；安徽省农业科学院院长青年创新基金项目（16B1019）；安徽省小麦产业技术体系项目

Author Name	Affiliation	E-mail
LEI Zhi-meng	School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
HAN Shang	Soil and Fertilizer Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
WU Ji	Soil and Fertilizer Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China	wuji338@163.com
ZHU Lin	School of Resources and Environment, Anhui Agricultural University, Hefei 230036, China
WANG Jian-lai	Crop Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China
HE Xian-fang	Crop Research Institute, Anhui Academy of Agricultural Sciences, Hefei 230031, China

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中文摘要:

为给淮北砂姜黑土区小麦生产中氮、钾肥的科学施用提供理论与技术依据，采用田间试验研究了不同氮、钾水平（N：180、240、300、360 kg·hm^-2；K：90、135、180 kg·hm^-2）对小麦产量、氮钾养分吸收利用以及肥料效益的影响。结果表明：（1）N₂₄₀K₁₈₀处理下小麦产量为7 686 kg·hm^-2，比低氮低钾（N₁₈₀K₉₀）处理的小麦产量显著提高7.24%，与高氮高钾（N₃₆₀K₁₈₀）处理的小麦产量无显著性差异；（2）氮、钾肥配比施用时两者存在正交互作用，该交互作用与小麦产量呈极显著正相关，对产量的贡献率为14.06%，且提高了氮、钾肥的偏生产力；（3）与低氮低钾（N₁₈₀K₉₀）处理相比，N₂₄₀K₁₈₀处理下小麦植株体内氮、钾素含量分别提高14.67%和29.53%。综合考虑小麦产量和肥料效益，本研究条件下淮北砂姜黑土区适宜的氮（N）、钾（K₂O）肥施用量分别为240 kg·hm^-2和180 kg·hm^-2。

英文摘要:

To provide theoretical and technical basis for the scientific application of nitrogen (N) and potassium (K) fertilizer in wheat cropping 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 N₂₄₀K₁₈₀ reached 7 686 kg·hm^-2, which was significantly increased by 7.24% comparing with that under N₁₈₀K₉₀, and there was no significant differences between the yields under N₂₄₀K₁₈₀ and N₃₆₀K₁₈₀; (2)Compared with the contents of N and K in wheat under N₁₈₀K₉₀, those under N₂₄₀K₁₈₀ were significantly increased by 14.67% and 29.53%, respectively; (3)There was a positive interaction 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 optimum application amounts of N and K₂O fertilizer were 240 kg·hm^-2和180 kg·hm^-2 in Huaibei lime concretion black soil area.

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