Optimizing nitrogen application improves its efficiency by higher allocation in bolls of cotton under drip fertigation

皮棉 人类受精 施肥 播种 数学 氮气 农学 野外试验 锦葵科 肥料 生物 化学 有机化学
作者
Yu Tian,Li‐Wen Tian,F. Wang,Xiaojuan Shi,Feng Shi,Xianzhe Hao,Nannan Li,Karine Chenu,Honghai Luo,Guozheng Yang
出处
期刊:Field Crops Research [Elsevier BV]
卷期号:298: 108968-108968 被引量:14
标识
DOI:10.1016/j.fcr.2023.108968
摘要

Nitrogen (N) loss is becoming one of the main limitations for sustainable agricultural production globally, particularly for crops such as cotton. To alleviate this issue, a promising strategy may be to exploit the N-saving potential of cotton plants by optimizing N application ratios at different growth stages under lower N rate and higher planting density with wide-row spacing. Two field experiments were carried out to investigate cotton yield, N use efficiency (NUE), N accumulation characteristics, and 15N uptake and distribution in response to N fertilization. First, a two-year experiment was conducted with N fertilization of either 0, 120, 240, 360 (control) or 480 kg ha−1. A three-year experiment was then carried out with 240 kg N ha−1 being applied with different ratios across three periods (squaring, flowering to peak boll, and late peak boll), i.e., 0:6:4 (N064), 1:6:3 (N163), 2:6:2 (N262, control), 3:6:1 (N361) and 4:6:0 (N460). Compared with conventional N fertilization (360 kg N ha−1), moderate fertilization at 240 kg N ha−1 resulted in steady and higher seed cotton yields of 5945 and 5603 kg ha−1 in 2017 and 2018, respectively, and improved NUE by 49.1–53.6%. Compared with conventional N262, a shift to later N application (N064) increased both lint yield and partial factor fiber productivity of nitrogen (PFFPN) by 4.4–7.7%, and accumulated 6.1–14.4% more total N (K) in reproductive organs due to higher average (Vt) and maximum (Vm) accumulation rates by 25.2–49.0% and 15.0–48.7%, respectively, while the fast N accumulation period (∆t) shortened by 15.2–24.4%. N064 partitioned 15.6% more 15N to reproductive organs. NUE was significantly positively correlated with K, t1 (the day when ∆t started), Vt, Vm, Tm (the day on which Vm occurred) and 15N accumulation in middle and upper canopy bolls, and negatively correlated with ∆t of total N accumulation in reproductive organs. Allocating N from the squaring period to the late peak boll period led to an increase in N uptake during the reproductive growth stage and greater allocation of N to cotton bolls under reduced-N cultivation and drip fertigation. This N management strategy is a potential way to improve NUE and achieve sustainable and efficient production of cotton in arid areas.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
CipherSage应助机灵的飞兰采纳,获得10
1秒前
潇洒的白凝完成签到,获得积分10
1秒前
2秒前
33完成签到,获得积分10
4秒前
夕拾发布了新的文献求助10
6秒前
Owen应助聪慧小霜采纳,获得10
7秒前
Hello应助聪慧小霜采纳,获得10
7秒前
思源应助聪慧小霜采纳,获得10
7秒前
所所应助聪慧小霜采纳,获得10
7秒前
Lucas应助聪慧小霜采纳,获得10
7秒前
言亦云应助聪慧小霜采纳,获得30
7秒前
8秒前
所所应助yuyu采纳,获得10
10秒前
云海老完成签到,获得积分10
11秒前
jimskylxk完成签到,获得积分10
11秒前
Joker完成签到,获得积分20
11秒前
研友_VZG7GZ应助聪慧小霜采纳,获得10
12秒前
ding应助聪慧小霜采纳,获得10
13秒前
情怀应助聪慧小霜采纳,获得30
13秒前
可爱的函函应助聪慧小霜采纳,获得10
13秒前
13秒前
酷波er应助聪慧小霜采纳,获得10
13秒前
无花果应助聪慧小霜采纳,获得30
13秒前
丘比特应助聪慧小霜采纳,获得10
13秒前
乐乐应助聪慧小霜采纳,获得10
13秒前
善学以致用应助聪慧小霜采纳,获得10
13秒前
Jasper应助聪慧小霜采纳,获得30
13秒前
U2完成签到,获得积分10
14秒前
14秒前
smottom应助puzhongjiMiQ采纳,获得10
15秒前
天天快乐应助puzhongjiMiQ采纳,获得10
15秒前
王鹏飞应助puzhongjiMiQ采纳,获得10
15秒前
JamesPei应助puzhongjiMiQ采纳,获得10
15秒前
万能图书馆应助puzhongjiMiQ采纳,获得10
15秒前
王鹏飞应助puzhongjiMiQ采纳,获得10
15秒前
王鹏飞应助puzhongjiMiQ采纳,获得10
15秒前
张童鞋完成签到 ,获得积分10
16秒前
16秒前
Albertxkcj发布了新的文献求助10
18秒前
Jero完成签到 ,获得积分10
18秒前
高分求助中
A new approach to the extrapolation of accelerated life test data 1000
Cognitive Neuroscience: The Biology of the Mind 1000
Technical Brochure TB 814: LPIT applications in HV gas insulated switchgear 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Picture Books with Same-sex Parented Families: Unintentional Censorship 500
Nucleophilic substitution in azasydnone-modified dinitroanisoles 500
不知道标题是什么 500
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 3969557
求助须知:如何正确求助?哪些是违规求助? 3514377
关于积分的说明 11173836
捐赠科研通 3249692
什么是DOI,文献DOI怎么找? 1794979
邀请新用户注册赠送积分活动 875537
科研通“疑难数据库(出版商)”最低求助积分说明 804836