|本期目录/Table of Contents|

[1]刘慧霞,郭正刚.不同土壤水分条件下添加硅对紫花苜蓿茎叶和土壤氮磷钾含量的影响[J].应用与环境生物学报,2011,17(06):809-813.[doi:10.3724/SP.J.1145.2011.00809]
　LIU Huixia,GUO Zhenggang.Effects of Supplementary Silicon on Nitrogen, Phosphorus and Potassium Contents in the Shoots of Medicago sativa Plants and in the Soil Under Different Soil Moisture Conditions[J].Chinese Journal of Applied & Environmental Biology,2011,17(06):809-813.[doi:10.3724/SP.J.1145.2011.00809]
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不同土壤水分条件下添加硅对紫花苜蓿茎叶和土壤氮磷钾含量的影响()
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《应用与环境生物学报》[ISSN:1006-687X/CN:51-1482/Q]

卷:
17卷
期数:
2011年06期
页码:
809-813
栏目:
研究论文
出版日期:
2011-12-25

文章信息/Info

Title:
Effects of Supplementary Silicon on Nitrogen, Phosphorus and Potassium Contents in the Shoots of Medicago sativa Plants and in the Soil Under Different Soil Moisture Conditions
作者:
刘慧霞; 郭正刚
（1西北民族大学生命科学与工程学院 兰州 730070）
（2兰州大学草地农业科技学院 兰州 730020)
Author(s):
LIU Huixia; GUO Zhenggang
(1College of Life Science and Engineering, Northwest University for Nationalities, Lanzhou 730030, China)
(2College of Pastoral Agricultural Science and Technology, Lanzhou University, Lanzhou 730020, China)
关键词:
添加硅; 紫花苜蓿; 土壤水分; 土壤氮; 土壤磷; 土壤钾
Keywords:
supplementary silicon;  Medicago sativa;  soil moisture;  soil nitrogen;  soil phosphorus;  soil potassium
分类号:
S143.71
DOI:
10.3724/SP.J.1145.2011.00809
文献标志码:
A
摘要:
为提高植物氮磷钾利用能力，采用盆栽试验研究了不同土壤水分条件下添加硅对紫花苜蓿（Medicago sativa）茎叶和土壤氮、磷、钾含量的影响. 结果表明，土壤含水量为饱和含水量的35%和80%时添加硅对紫花苜蓿生物量没有明显影响，而土壤含水量为饱和含水量的50%和65%时则显著提高了紫花苜蓿生物量（P<0.05）；添加硅对紫花苜蓿茎叶内氮含量没有显著影响，但显著提高了茎叶内钾和磷含量（P<0.05）；添加硅对土壤全氮、速效氮、全钾和全磷含量没有显著影响，而显著提高了土壤速效磷含量（P<0.05），显著降低了土壤速效钾含量（P<0.05）. 说明添加硅能够显著增加紫花苜蓿茎叶内磷和钾的积累量，刺激土壤速效磷释放，降低土壤速效钾含量. 图1 表3 参22
Abstract:
A pot experiment was carried out to determine the effect of supplementary silicon on nitrogen, phosphorus and potassium contents in the shoots of alfalfa (Medicago sativa) plants and in the soil under different soil moisture conditions. The results indicated that supplementary silicon had no effect on the biomass of alfalfa plants when the soil moisture was 35% or 80% of field water capacity but significantly increased the biomass of alfalfa plants when the soil moisture was 50% or 65% of field water capacity (P<0.05). Although supplementary silicon did not affect the total nitrogen content in the shoots of alfalfa plants, it significantly increased the total potassium and phosphorus contents in the shoots of the plants (P<0.05). Supplementary silicon had no effect on the total nitrogen, available nitrogen, total phosphorus and total potassium of the soil, however, it significantly increased the available phosphorus content and decreased the available potassium content in the soil (P<0.05). This study suggested that supplementary silicon increased the deposit of phosphorus and potassium in alfalfa shoots, benefited the release of available phosphorus and reduced the available potassium content in the soil. Fig 1, Tab 3, Ref 22

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备注/Memo

备注/Memo:
国家自然科学基金项目（No. 30900173）和中国博士后科学基金首批特别项目（No. 200801242）资助
更新日期/Last Update: 2011-12-30