Soil C/N and pH together as a comprehensive indicator for evaluating the effects of organic substitution management in subtropical paddy fields after application of high-quality amendments

土壤碳 偏最小二乘回归 环境科学 土壤质量 土壤健康 肥料 土壤pH值 农学 土壤水分 土壤有机质 化学 环境化学 数学 土壤科学 生物 统计
作者
Xianglin Dai,Wei Zhou,Guangrong Liu,Guoqing Liang,Ping He,Zengbing Liu
出处
期刊:Geoderma [Elsevier]
卷期号:337: 1116-1125 被引量:83
标识
DOI:10.1016/j.geoderma.2018.11.023
摘要

Organic substitution management (OSM) is a key technology employed to reduce the amount of chemical fertilizer used in agricultural operations with the goal of reducing environmental pollution and ensuring green and sustainable agricultural development in China. However, there is still limited information regarding the underlying interactions between soil nutrients, enzyme activities and microbial community structures after long-term partial substitution of inorganic N with organic amendments, and no suitable evaluation indicators of organic substitution effects have been identified. Here, distance-based redundancy analysis (dbRDA), principal component analysis (PCA), the partial least squares method (PLS) and the partial least squares path model (PLS-PM) were used to better understand the impact of substitution effects on soil biochemical indexes in a 34-year field experiment. We found that soil C/N significantly directly affected rice yield, and that a soil C/N ranging from 10.12 to 10.19 could sustain a rice yield between 7000 and 6800 kg ha−1. Moreover, the soil hydrolase activities of the carbon and fungi communities were significantly influenced by both C/N and pH, and the carbon-cycling enzyme activities were found to be more susceptible to C/N than nitrogen-cycling enzyme activities. The low soil C/N and high pH after OSM decreased the ratio of G+ to G− and fungi to bacteria, indicating OSM increased the nutrient availability and benefited growth of the bacterial community. Hence, we believe that soil C/N and pH together can be used as a comprehensive index for suitable evaluation of the effects of OSM.
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
大幅提高文件上传限制,最高150M (2024-4-1)

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
呢喃发布了新的文献求助10
刚刚
月亮完成签到 ,获得积分10
1秒前
1秒前
2秒前
suitm发布了新的文献求助10
2秒前
2秒前
2秒前
香蕉觅云应助Spine Lin采纳,获得10
3秒前
lx123abc完成签到 ,获得积分10
3秒前
华仔应助糖糖采纳,获得10
4秒前
耐斯糖发布了新的文献求助10
5秒前
6秒前
白羊发布了新的文献求助10
6秒前
7秒前
洛小叶完成签到 ,获得积分10
8秒前
9秒前
李爱国应助淡定怀梦采纳,获得10
9秒前
9秒前
叶子完成签到,获得积分10
10秒前
墨竹青浅完成签到,获得积分10
10秒前
10秒前
10秒前
大模型应助ryze采纳,获得10
11秒前
fdxs发布了新的文献求助10
12秒前
chs110完成签到,获得积分10
12秒前
13秒前
13秒前
13秒前
111发布了新的文献求助10
13秒前
苗条铅笔完成签到,获得积分10
15秒前
15秒前
16秒前
云治发布了新的文献求助10
16秒前
华仔应助科研通管家采纳,获得10
16秒前
上官若男应助科研通管家采纳,获得10
16秒前
菌菌发布了新的文献求助10
16秒前
17秒前
脑洞疼应助科研通管家采纳,获得20
17秒前
小马甲应助科研通管家采纳,获得10
17秒前
17秒前
高分求助中
Licensing Deals in Pharmaceuticals 2019-2024 3000
Effect of reactor temperature on FCC yield 2000
Very-high-order BVD Schemes Using β-variable THINC Method 1020
Impiego dell’associazione acetazolamide/pentossifillina nel trattamento dell’ipoacusia improvvisa idiopatica in pazienti affetti da glaucoma cronico 900
錢鍾書楊絳親友書札 800
PraxisRatgeber: Mantiden: Faszinierende Lauerjäger 800
Mission to Mao: Us Intelligence and the Chinese Communists in World War II 600
热门求助领域 (近24小时)
化学 医学 生物 材料科学 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 基因 遗传学 催化作用 物理化学 免疫学 量子力学 细胞生物学
热门帖子
关注 科研通微信公众号,转发送积分 3298473
求助须知:如何正确求助?哪些是违规求助? 2933477
关于积分的说明 8463553
捐赠科研通 2606464
什么是DOI,文献DOI怎么找? 1423071
科研通“疑难数据库(出版商)”最低求助积分说明 661574
邀请新用户注册赠送积分活动 644983