Volume 28 Issue 2
Apr.  2011
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SUN Yu, LI Guo-lei, LIU Yong, MA Lü-yi, ZHU Yan, JIANG Chang-ji, LIU Fu-sen, LI Xue-lian. Growth and P-uptake for Larix olgensis seedlings with phosphorus top-dressed using fertigation[J]. Journal of Zhejiang A&F University, 2011, 28(2): 219-226. doi: 10.11833/j.issn.2095-0756.2011.02.008
Citation: SUN Yu, LI Guo-lei, LIU Yong, MA Lü-yi, ZHU Yan, JIANG Chang-ji, LIU Fu-sen, LI Xue-lian. Growth and P-uptake for Larix olgensis seedlings with phosphorus top-dressed using fertigation[J]. Journal of Zhejiang A&F University, 2011, 28(2): 219-226. doi: 10.11833/j.issn.2095-0756.2011.02.008

Growth and P-uptake for Larix olgensis seedlings with phosphorus top-dressed using fertigation

doi: 10.11833/j.issn.2095-0756.2011.02.008
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  • Corresponding author: LIU Yong
  • Publish Date: 2011-04-20
通讯作者: 陈斌, bchen63@163.com
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    沈阳化工大学材料科学与工程学院 沈阳 110142

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Growth and P-uptake for Larix olgensis seedlings with phosphorus top-dressed using fertigation

doi: 10.11833/j.issn.2095-0756.2011.02.008
    Corresponding author: LIU Yong

Abstract: With the aim to improving the phosphorus efficiency and finding the best phosphorus applying method,two types of phosphorus (P) fertilizer application to Larix olgensis transplanted seedlings were undertaken:1) into the soil as a basal fertilizer before transplanting and 2) by fertigation as a topdressing three times during the growing season. A split-plot experimental design with P (163,326,and 489 kghm-2) as main treatments and fertigation ratios (0,25.0%,33.3%,50.0%,and 100%) as sub treatments was established.There were three replications,and the rapidly-available phosphorus content in the soil is 37.11 mgkg-1. Results showed that P application did not significantly affect seedling growth or P content,however,seedling height,diameter,first-order lateral root in diameter at a junction 1 mm,and biomass increased with increasing P. With a top-dressing of 163 kghm-2 P,seedling height and diameter reached the national seedling standard(the seedling height>35 cm,the seedling dimater>5 mm). Also,with the 33.3% fertigation ratio,P concentration in the stem;P content in the root,stem,as well as the entire seedling;and P use efficiency were maximum with the total P content of 0.405 g and P use efficiency of 11.4%. Therefore,163 kghm-2 P with 33.3% of it to be applied as a top-dressed fertigation during the growing season was the best P application for L. olgensis transplanted seedlings.[Ch,1 fig. 9 tab. 18 ref.]

SUN Yu, LI Guo-lei, LIU Yong, MA Lü-yi, ZHU Yan, JIANG Chang-ji, LIU Fu-sen, LI Xue-lian. Growth and P-uptake for Larix olgensis seedlings with phosphorus top-dressed using fertigation[J]. Journal of Zhejiang A&F University, 2011, 28(2): 219-226. doi: 10.11833/j.issn.2095-0756.2011.02.008
Citation: SUN Yu, LI Guo-lei, LIU Yong, MA Lü-yi, ZHU Yan, JIANG Chang-ji, LIU Fu-sen, LI Xue-lian. Growth and P-uptake for Larix olgensis seedlings with phosphorus top-dressed using fertigation[J]. Journal of Zhejiang A&F University, 2011, 28(2): 219-226. doi: 10.11833/j.issn.2095-0756.2011.02.008

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