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| 不同形态无机磷对两种磷效率小麦根际特征的影响 | |
| 引用本文： | 侯焱焱,展晓莹,刘璇,张乃明,张淑香.不同形态无机磷对两种磷效率小麦根际特征的影响[J].中国土壤与肥料,2011(1). |
| 作者姓名： | 侯焱焱 展晓莹 刘璇 张乃明 张淑香 |
| 作者单位： | 1. 农业部作物营养与施肥重点开放实验室,中国农业科学院农业资源与农业区划研究所,北京,100081;云南农业大学资源与环境学院,云南,昆明,650201 2. 农业部作物营养与施肥重点开放实验室,中国农业科学院农业资源与农业区划研究所,北京,100081 3. 云南农业大学资源与环境学院,云南,昆明,650201 |
| 基金项目： | 国家重点基础研究发展规划973项目，基础性工作 |
| 摘 要： | 以磷高效型小麦小偃54和磷低效型小麦京411为材料的砂培试验,通过测定植株生物量及吸磷量、根系形态特征、根际pH、磷酸酶活性,研究不同形态无机磷WP(KH2PO4),Al-P(AlPO4)和Fe-P(FePO4)对两种磷效率小麦根际特征的影响.结果表明,在WP处理下,两种磷效率小麦的地上部吸磷量、总吸磷量和磷吸收效率均显著高于其它处理,而其根冠比和磷利用效率却低于其他处理.除了根部吸磷量,小偃54的生物量和吸磷量有高于京411的趋势.除了WP处理,其他处理的小偃54的根冠比和地下吸磷量均高于京411.所有处理的小偃54的根长和根体积均显著高于京411,且不施磷条件(PO)下更为明显,小偃54根系长度是京411的1.6倍;此外,小偃54根系磷酸酶活性均比京411弱.除Al-P外,小偃54的根际酸化能力较京411强.由此可见,磷胁迫条件下,磷高效小麦根系形态特征改变是根际磷活化的主要机理之一,且受磷水平、磷形态及其溶解性的影响. |
| 关 键 词： | 磷效率 小麦 根际特征 无机磷 |
Effects of different forms of inorganic P on rhizosphere in different P-efficiency wheat |
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| HOU Yan-yan,ZHAN Xiao-ying,LIU Xuan,ZHANG Nni-ming,ZHANG Shu-xiang.Effects of different forms of inorganic P on rhizosphere in different P-efficiency wheat[J].Soil and Fertilizer Sciences in China,2011(1). | |
| Authors: | HOU Yan-yan ZHAN Xiao-ying LIU Xuan ZHANG Nni-ming ZHANG Shu-xiang |
| Institution: | HOU Yan-yan1,2,ZHAN Xiao-ying1,LIU Xuan1,ZHANG Nai-ming2,ZHANG Shu-xiang1(1.Key Laboratory of Crop Nutrition and Fertilization,Ministry of Agriculture,Institute of Agricultural Resources and Rational Planning,Chinese Academy of Agricultural Sciences,Beijing 100081,2.College of Resources and Environment,Yunnan Agricultural University,Kunming 650201) |
| Abstract: | The experiment was conducted to investigate effects of different forms of inorganic P on characteristics of rhizosphere in different P-efficiency wheat under the gravel culture conditions.Two different P-efficient wheat genotypes(the Pefficient wheat Xiaoyan54 and the P-inefficient wheat Jing411)were selected for the study.Crop biomass,P uptake amount,pH and phosphatase activity in the rhizosphere under different forms of inorganic P were measured.Result showed that:with WP(KH2PO4) application,the P adsorpt... |
| Keywords: | phosphorus efficient wheat characteristics of rhizosphere inorganic phosphorus |
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