High phosphorus at seedling stage decreases the post-transplanting fertiliser requirement of cucumber (Cucumis sativus L.)
文献类型：期刊论文
| 作者 | Liang, Lin Zhou1; Qj, Hai Ji1,2; Xu, Ping1; Zhao, Xue Qiang1; Dong, Xiao Ying1; Shen, Ren Fang1 |
| 刊名 | SCIENTIA HORTICULTURAE
 |
| 出版日期 | 2015-07-16 |
| 卷号 | 190页码:98-103 |
| 关键词 | Phosphorus application Seedling stage Cucumber Uptake kinetics |
| ISSN号 | 0304-4238 |
| DOI | 10.1016/j.scienta.2015.04.025 |
| 通讯作者 | Shen, Ren Fang(rfshen@issas.ac.cn) |
| 英文摘要 | High rates of phosphorus (P) are generally applied to vegetable crops, but this carries a risk of polluting the environment. There has been little research to define optimum soil P levels and strategies to reduce P requirements in the field. We hypothesized that high rates of P fertilization at the seedling stage followed by lower rates later could reduce total P fertilizer use in cucumber (Cucumis sativus L.). In this study, we explored the optimum P application via pot experiments in which three P levels at the seedling stage (0, 80, and 240 mg P kg(-1) soil) were used in factorial combination with three P levels after transplanting (0, 80, and 160 mg P kg(-1) soil). Results showed that P applied in the seedling stage was much more effective at maintaining optimal growth than in the field after transplanting. For example, 72 mg P pot(-1) applied in the mode 240/0 (P application rates at the seedling vs transplant stages) produced a biomass dry weight (DW) of 17.7 g pot(-1), whereas 360 mg P pot(-1) applied in the mode 0/80 produced only 13.8 gpot(-1). An ancillary study measured the depletion of P from solution by cucumber seedlings between 13 and 21 days after sowing. Over this period V-max (the maximum uptake velocity) decreased from 1.18 to 0.50 nmol g(-1) root dry weights(-1), while K-m (the half-saturation constant where uptake is 50% of V-max) increased from 5.60 to 8.141 mu M. That indicates that since cucumber plants have a high capacity to absorb P as seedlings, it would be expected to reduce the P requirement in field soils. There are therefore efficiencies in applying higher P at the seedling stage and lower levels later. (C) 2015 Elsevier B.V. All rights reserved. |
| 收录类别 | SCI |
| WOS关键词 | UPTAKE KINETICS ; EXCESSIVE APPLICATION ; FARMING SYSTEMS ; ROOT MORPHOLOGY ; PLANT-AGE ; EFFICIENCY ; IMPROVE ; GROWTH ; SOIL ; STRATEGIES |
| WOS研究方向 | Agriculture |
| WOS类目 | Horticulture |
| 语种 | 英语 |
| WOS记录号 | WOS:000356749500013 |
| 出版者 | ELSEVIER SCIENCE BV |
| URI标识 | http://www.irgrid.ac.cn/handle/1471x/2558381 |
| 专题 | 南京土壤研究所 |
| 通讯作者 | Shen, Ren Fang |
| 作者单位 | 1.Chinese Acad Sci, Inst Soil Sci, State Key Lab Soil & Sustainable Agr, Nanjing 210008, Peoples R China 2.Agr Bur HeKou Dist, Dongying 257200, Shan Dong, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liang, Lin Zhou,Qj, Hai Ji,Xu, Ping,et al. High phosphorus at seedling stage decreases the post-transplanting fertiliser requirement of cucumber (Cucumis sativus L.)[J]. SCIENTIA HORTICULTURAE,2015,190:98-103. |
| APA | Liang, Lin Zhou,Qj, Hai Ji,Xu, Ping,Zhao, Xue Qiang,Dong, Xiao Ying,&Shen, Ren Fang.(2015).High phosphorus at seedling stage decreases the post-transplanting fertiliser requirement of cucumber (Cucumis sativus L.).SCIENTIA HORTICULTURAE,190,98-103. |
| MLA | Liang, Lin Zhou,et al."High phosphorus at seedling stage decreases the post-transplanting fertiliser requirement of cucumber (Cucumis sativus L.)".SCIENTIA HORTICULTURAE 190(2015):98-103. |
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来源：南京土壤研究所
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