Xiaoqiang Jiao;Haigang Li;Zed Rengel;福锁 张;建波 申
China Agricultural University;University of Western Australia;China Association for Science and Technology
发表时间:2015-8-5
期 刊:Field Crops Research
语 言:English
U R L: http://www.scopus.com/inward/record.url?scp=84930960066&partnerID=8YFLogxK
Plant biomass, root growth and phosphorus (P) uptake can be strongly influenced by soil P availability; large amounts of P accumulate as residual P in agricultural soils due to over-application of fertilizer P. However, the dynamics of plant growth and P uptake in response to different residual P supply gradients during the whole growth cycle is not fully understood. Here, a 2-year field experiment with Brassica campestris was conducted to characterize the dynamic pattern of biomass accumulation and P uptake rates with different residual P supply throughout the growth cycle. The plants grown in the high residual-P treatment had greater biomass production and P uptake than the low residual-P plants throughout the growth cycle. The corresponding average rates of plant growth and P uptake were higher in high than low residual-P treatments till flowering, but no differences were observed thereafter. The rates of plant growth and P uptake increased with growth stages before flowering and then decreased. The maximum differences in plant growth and P uptake rate between low and high residual-P treatments were found at the flowering stage. Compared with low P supply, high residual-P supply enhanced root dry weight over time. Time of attaining maximum average daily biomass production rate was delayed by about 4 days at low soil residual-P supply. The results indicated that soil residual-P supply intensity regulated biomass production, growth rate, P uptake rate and the time of attaining maximum average daily biomass production rate, depending on growth stages. It is suggested that exploration of soil residual P by plant is closely associated with growth stages and the soil residual P supply intensity.
Scopus度量
年份 | CiteScore | SJR | SNIP |
---|---|---|---|
1996 | |||
1997 | |||
1998 | |||
1999 | 0.947 | 1.158 | |
2000 | 0.775 | 1.131 | |
2001 | 0.972 | 1.403 | |
2002 | 0.859 | 1.595 | |
2003 | 0.969 | 1.689 | |
2004 | 0.843 | 1.322 | |
2005 | 0.933 | 1.472 | |
2006 | 1.241 | 1.86 | |
2007 | 1.111 | 1.578 | |
2008 | 1.353 | 1.69 | |
2009 | 1.385 | 1.698 | |
2010 | 1.192 | 1.647 | |
2011 | 4.1 | 1.529 | 1.92 |
2012 | 4.3 | 1.315 | 1.967 |
2013 | 4.6 | 1.378 | 1.822 |
2014 | 5.3 | 1.666 | 1.909 |
2015 | 6 | 1.798 | 1.997 |
2016 | 5.9 | 1.619 | 1.962 |
2017 | 5.8 | 1.474 | 2.028 |
2018 | 6.2 | 1.703 | 1.918 |
2019 | 7.4 | 1.767 | 2.178 |
2020 | 8.3 |
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