| 氮肥水平对强筋小麦产量和氮素利用的影响 |
| |
| 引用本文： | 柏 慧,张 秀,初金鹏,于海涛,杨宏业,徐晨晨,代兴龙.氮肥水平对强筋小麦产量和氮素利用的影响[J].中国农学通报,2020,36(4):7-14. |
| |
| 作者姓名： | 柏 慧 张 秀 初金鹏 于海涛 杨宏业 徐晨晨 代兴龙 |
| |
| 作者单位： | 1. 山东农业大学农学院,山东泰安 271018;2. 潍坊市农业科学院,山东潍坊 261041 |
| |
| 基金项目： | 山东省高等学校科技计划“冬小麦产量差与资源利用过程的关系及其调控”(J15LF07)。 |
| |
| 摘 要： | 为明确强筋小麦产量与效率相协同的最优施氮量,试验选用‘济麦20’和‘洲元9369’ 2个优质强筋小麦品种为试验材料,设置0、120、180、240、300 kg N/hm 2等5个施氮水平,用烘干法和凯氏定氮法分别测定小麦成熟期干物质量积累和含氮量,用以计算小麦氮素积累及氮素利用相关指标。结果表明,随氮肥投入量的增加,小麦产量呈现先升高后降低的变化趋势,其中‘济麦20’在N180和N240下达最高产量7.28 t/hm 2和7.26 t/hm 2,其较高的产量主要源于相对平衡的产量构成因素以及较高的干物质积累量（平均18.54 t/hm 2）;‘洲元9369’在N180下产量最高达7.75 t/hm 2,其较高的产量主要源于较高的单位面积穗数(970.65万/hm 2)、穗粒数（30.83粒）、较高的干物质积累量(20.77 t/hm 2)和收获指数(37.33%)。虽然氮肥偏生产力随着氮肥施用量的增加逐渐下降,但两品种的氮肥回收效率、氮肥农学利用率和氮肥生理利用效率均可在N180条件下达到最高值,其中,‘济麦20’最高值分别为62.67%、5.71 kg/kg、9.11 kg/kg,‘洲元9369’的最高值分别为63.65%、7.33 kg/kg、11.55 kg/kg。综合产量水平和氮素利用相关指标,本区域强筋小麦生产中产量与氮素利用效率相协同的施氮量为180 kg/hm 2。
|
| 关 键 词： | 强筋小麦 产量 氮素利用 氮肥水平 产量效率协同 |
| 收稿时间： | 2018/9/20 0:00:00 |
| 修稿时间： | 2018/11/14 0:00:00 |
Bai Hui, Zhang Xiu, Chu Jinpeng, Yu Haitao, Yang Hongye, Xu Chenchen, Dai Xinglong, He Mingrong |
| |
| Bai Hui,Zhang Xiu,Chu Jinpeng,Yu Haitao,Yang Hongye,Xu Chenchen,Dai Xinglong.Bai Hui, Zhang Xiu, Chu Jinpeng, Yu Haitao, Yang Hongye, Xu Chenchen, Dai Xinglong, He Mingrong[J].Chinese Agricultural Science Bulletin,2020,36(4):7-14. |
| |
| Authors: | Bai Hui Zhang Xiu Chu Jinpeng Yu Haitao Yang Hongye Xu Chenchen Dai Xinglong |
| |
| Institution: | 1. College of Agronomy, Shandong Agricultural University, Taian Shandong 271018;2. Weifang Academy of Agricultural Sciences, Weifang Shandong 261041 |
| |
| Abstract: | Objective]Method]In order to clear the suitable N level which could observe synergetic yield and N use efficiency, two winter wheat cultivars with strong gluten (Jimai 20 and Zhouyuan 9369) was used to investigate the effect of N levels (0, 120, 180, 240, 300 kg N.hm-2) on the grain yield, dry matter accumulation and distribution, apparent recovery efficiency of applied N (REN), partial factor productivity form applied N (PFPN), agronomic efficiency of applied N (AEN) and physiological efficiency of applied N (PEN). Result] The results showed that the N level significantly influenced the grain yield and N use efficiency of the two wheat cultivars. The grain yield increased first and then decreased as the N level improved from 0 to 300 kg N.hm-2. The cultivar Jimai 20 observed relatively high grain yield mainly through the balanced yield components and high dry matter accumulation. While the cultivar Zhouyuan 9369 obtained relatively high grain yield mainly owe to the higher spikes per unit area, kernels per spike, dry matter accumulation and distribution. Although the PFPN markedly reduced as the N level improved, the REN, AEN and PEN achieved the highest value. Conclusion]Taking the grain yield and N use efficiency in consideration, the suitable N level which could observe synergetic yield and N use efficiency is 180 kg.hm-2 in the local region. |
| |
| Keywords: | Winter wheat with strong gluten grain yield N use efficiency N level coordination in yield and NUE |
| 本文献已被 CNKI 等数据库收录！ |
| 点击此处可从《中国农学通报》浏览原始摘要信息 |
| 点击此处可从《中国农学通报》下载免费的PDF全文 |
|
