| 钠替代部分钾对棉花生长和养分吸收的影响 |
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| 引用本文： | 张彦才,周晓芬,李巧云,翟彩霞,刘全清.钠替代部分钾对棉花生长和养分吸收的影响[J].植物营养与肥料学报,2006,12(1):115-118. |
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| 作者姓名： | 张彦才 周晓芬 李巧云 翟彩霞 刘全清 |
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| 作者单位： | 1.河北省农林科学院农业资源环境研究所 河北石家庄050051 |
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| 摘 要： | 钠替代部分钾的盆栽试验结果表明,在供试土壤速效钾和水溶性钠偏低的条件下,钠可以替代部分钾的作用。当Na施用浓度低于500.mg/kg时,对棉花苗期的生长有明显的促进作用;施Na.1000.mg/kg,棉种出苗率仅为60%,病苗死苗率达80%以上,生物量显著降低,可认为是Na对棉花苗期生长的临界值。将土壤速效钾水平调到K2O.120.mg/kg、土壤水溶性钠水平调到Na.80.mg/kg,K2O与Na之比为1∶0.67时,棉花苗期、蕾期和花铃期单株干物质积累量和钾、钠吸收量明显增加,可获得最好的籽棉产量,增产8.96%～10.28%。
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| 关 键 词： | 棉花 钠部分替代钾 生长 养分吸收 |
| 文章编号： | 1008-505X(2006)01-0115-05 |
| 收稿时间： | 2004-11-8 |
| 修稿时间： | 2004年11月8日 |
The effects of partial replacement of potassium by sodium on cotton growth and nutrition absorption |
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| ZHANG Yan-cai,ZHOU Xiao-fen,LI Qiao-yun,ZHAI Cai-xia,LIU Quan-qing.The effects of partial replacement of potassium by sodium on cotton growth and nutrition absorption[J].Plant Nutrition and Fertilizer Science,2006,12(1):115-118. |
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| Authors: | ZHANG Yan-cai ZHOU Xiao-fen LI Qiao-yun ZHAI Cai-xia LIU Quan-qing |
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| Institution: | 1.Institute of Resources and Environmem Hebei AAFS;Shijiazhuang 050051;China |
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| Abstract: | By this pot experiment,the Na was lower than 500 mg/kg,the cotton growth was promoted obviously.When Na level was 1000 mg/kg,the seeding rate of cotton was only 60%,the sickness seedling rate reaches above 80%.And the biomass remarkably reduced.That is the marginal value of employment Na in cotton seedling stage.Under the condition of the low water-soluble K strength in the test soil,when K level is 120 mg/kg,and the supply of Na level is 80(mg/kg,) and the ratio of K2O to Na is 1∶0.67,accumulation of single sapling dry matter for the period of cotton seedling,bud and fllower-boll were increased remarkably.And the absorption of Na and K are the same.The production increased 8.96% to 10.28%.And the unginned cotton reached the most production. |
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| Keywords: | cotton partial replacement of potassium by sodium growing nutrition-absorption by cotton |
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