亲爱的研友该休息了!由于当前在线用户较少,发布求助请尽量完整地填写文献信息,科研通机器人24小时在线,伴您度过漫漫科研夜!身体可是革命的本钱,早点休息,好梦!

[Response of Olsen-P to P balance in yellow soil upland of southwestern China under long-term fertilization.]

肥料 人类受精 动物科学 作物 农学 作物产量 土壤pH值 化学 土壤水分 环境科学 生物 土壤科学 有机化学
作者
Yu Li,Yan Ling Liu,Ya Rong Zhang,Yan Shen,Wen An Zhang,Tai Ming Jiang
出处
期刊:PubMed 卷期号:27 (7): 2321-2328 被引量:1
标识
DOI:10.13287/j.1001-9332.201607.032
摘要

Based on a long-term fertilization experiment in Guizhou Province, we explored the relationships between the soil available phosphorus (Olsen-P), soil apparent P balance and P application rate in order to quantify the best application rate of P fertilizer in yellow upland soil of southwestern China. Moreover, the response curve of crop yield to soil Olsen-P was fitted by Mitscherlich equation to determine the critical content of Olsen-P for crop yield. The results showed that the long-term application of P fertilizer could significantly increase the content of soil Olsen-P, and the increasing rates of Olsen-P across different treatments could be mainly explained by the application rate of P fertilizer. Under no-P treatment, the soil P content was in a deficient state for each year, while it displayed a surplus state in the treatments with P fertilizer, and the crop P uptake and P accumulation were found the highest under MNPK treatment. In contrast to single application of chemical fertilizer treatment (NPK), the combined application of organic fertilizer and chemical fertilizer (1/4 M+3/4 NPK, 1/2 M+1/2 NPK) could enhance crop P uptake and improve accumulative P use efficiency. The soil apparent P balance was significantly (P<0.05) correlated with soil Olsen-P. With average P accumulation of 100 kg·hm-2, the soil Olsen-P increased by 16.4, 13.0 , 21.4 , and 5.6 mg·kg-1 in the treatments of MNPK, 1/4 M+3/4 NPK, 1/2 M+1/2 NPK, and NPK, respectively. The result showed that combined application of organic fertilizer and chemical fertilizer could effectively increase the soil Olsen-P content, and the critical value of soil Olsen-P was 22.4 mg·kg-1 in yellow upland soil of southwestern China. The soil P balance and Olsen-P content were significantly (P<0.01) correlated with the annual P application rate. When the amount of average P application was 33.3 kg P·hm-2·a-1, the budgets of soil P balance remained stable, and the application rate of P fertilizer corresponding to the critical value of soil Olsen-P for crop yield was 45.9 kg P·hm-2·a-1. The content of soil Oslen P was mainly affected by the P fertilizer input amount. When the average P application rate was 45.9 kg P·hm-2·a-1, higher crop yield and P fertilizer efficiency would be achieved. When the average P application rate was greater than 45.9 kg P·hm-2·a-1, crop yield showed no response to P fertilizer input, but resulted in a large amount of P surplus in soil, thereby increasing the environmental risk of soil P loss. The long-term application of manure resulted in a higher increase of Olsen-P than the single chemical P ferti-lizer.以贵州黄壤肥力与肥效长期定位试验为平台,探究有效磷(Olsen-P)与土壤累积磷盈亏、磷肥用量的关系,确定西南黄壤旱地最佳磷肥施肥量,通过Mitscherlich方程模拟作物相对产量对土壤Olsen-P的响应关系,明确西南黄壤旱地的农学阈值.结果表明: 施用磷肥可显著提高土壤Olsen-P含量,不同施磷处理间提升幅度主要与磷肥施用量有关;不施磷处理土壤磷素一直处于亏缺状态,施磷处理土壤磷素有盈余,其中全量有机肥配施全量化肥处理(MNPK)作物吸磷量和磷素盈余量最高,同等施磷水平下,与单施化肥处理(NPK)相比,有机肥配施化肥处理(1/4 M +3/4 NPK、1/2 M +1/2 NPK)更能促进作物对磷素的吸收,提高磷素累积利用率.土壤累积磷盈亏与土壤Olsen-P增量呈显著直线相关关系(P<0.05),土壤中磷素每盈余100 kg·hm-2,MNPK、1/4 M +3/4 NPK、1/2 M +1/2 NPK、NPK处理Olsen-P分别增加16.4、13.0、21.4、5.6 mg·kg-1,有机肥与化肥配施能有效增加土壤Olsen-P含量.西南黄壤旱地Olsen-P的农学阈值为22.4 mg·kg-1;土壤每年磷盈亏和Olsen-P含量与磷肥施用量呈极显著正相关关系(P<0.01),磷肥用量(纯P)为每年33.3 kg·hm-2时,土壤磷盈亏呈持平状态,Olsen-P农学阈值对应的施肥量(纯P)为每年45.9 kg·hm-2.西南黄壤旱地Olsen-P含量主要与施磷水平有关,当年施磷量为45.9 kg·hm-2时可获得最佳的作物产量,磷肥利用率高;当年施磷量高于45.9 kg·hm-2时,作物产量对磷肥用量无响应,大量磷素累积在土壤中,增加了磷素的环境流失风险.西南黄壤旱地长期施用有机肥处理单位累积磷盈余量提升土壤Olsen-P的速率大于单施化学磷肥处理.
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
rumengren完成签到 ,获得积分10
20秒前
33秒前
嘉嘉完成签到 ,获得积分10
38秒前
重要元灵完成签到 ,获得积分10
1分钟前
科研通AI2S应助科研通管家采纳,获得10
1分钟前
完美世界应助科研通管家采纳,获得10
1分钟前
俏皮元珊完成签到 ,获得积分10
1分钟前
21完成签到 ,获得积分10
1分钟前
2分钟前
自然芷文发布了新的文献求助10
2分钟前
112345完成签到 ,获得积分10
2分钟前
自然芷文完成签到,获得积分10
3分钟前
3分钟前
迷人问兰发布了新的文献求助10
3分钟前
科研通AI2S应助科研通管家采纳,获得19
3分钟前
sjyu1985完成签到 ,获得积分10
4分钟前
闻巷雨完成签到 ,获得积分10
4分钟前
pegasus0802完成签到 ,获得积分10
4分钟前
5823364完成签到,获得积分10
5分钟前
automan完成签到,获得积分10
5分钟前
天亮polar完成签到,获得积分10
5分钟前
5分钟前
5分钟前
6分钟前
朴实云应发布了新的文献求助10
6分钟前
林子青完成签到,获得积分10
6分钟前
核桃发布了新的文献求助30
6分钟前
李健应助reerwt采纳,获得10
6分钟前
6分钟前
ICSSCI发布了新的文献求助10
7分钟前
7分钟前
刘宇童给刘宇童的求助进行了留言
7分钟前
reerwt发布了新的文献求助10
7分钟前
7分钟前
科研通AI2S应助科研通管家采纳,获得10
7分钟前
科研通AI2S应助科研通管家采纳,获得10
7分钟前
ICSSCI完成签到,获得积分10
7分钟前
7分钟前
董可以发布了新的文献求助10
7分钟前
风华正茂完成签到,获得积分10
8分钟前
高分求助中
The Mother of All Tableaux: Order, Equivalence, and Geometry in the Large-scale Structure of Optimality Theory 3000
A new approach to the extrapolation of accelerated life test data 1000
ACSM’s Guidelines for Exercise Testing and Prescription, 12th edition 500
Indomethacinのヒトにおける経皮吸収 400
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 350
Robot-supported joining of reinforcement textiles with one-sided sewing heads 320
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 3990049
求助须知:如何正确求助?哪些是违规求助? 3532108
关于积分的说明 11256369
捐赠科研通 3270998
什么是DOI,文献DOI怎么找? 1805166
邀请新用户注册赠送积分活动 882270
科研通“疑难数据库(出版商)”最低求助积分说明 809228