| 流沙和改良后土壤无机磷形态分级及其有效性研究 |
| |
| 引用本文： | 段争虎,肖洪浪.流沙和改良后土壤无机磷形态分级及其有效性研究[J].中国沙漠,2001,21(2):195-199. |
| |
| 作者姓名： | 段争虎 肖洪浪 |
| |
| 作者单位： | 中国科学院寒区旱区环境与工程研究所沙坡头沙漠试验研究站, 甘肃兰州 730000 |
| |
| 基金项目： | 中国科学院“九五”重大项目(KZ951-A1-301);中国科学院寒区旱区环境与工程研究所知识创新项目(KZCX210028)资助 |
| |
| 摘 要： | 应用蒋柏藩和顾益初提出的石灰性土壤无机磷分级方法，对沙坡头地区流沙及改良土壤无机磷分级进行了研究，并对其有效性做出评价，结果表明，流沙中Ca2-P占无机磷总量的3.1%,Ca8-P占11.4%,AI-P占7.0%,Fe-P占5.3%,O-P占0.14%和Ca10-P占73.2%；改良土壤中Ca2-P占无机磷总量的1.7%,Ca8-P占7.2%,AI-P占5.1%,Fe-P占3.8%，O-P占0.08%和Ca10-P占82.12%。其中Ca2-P与Ca8-P是作物磷素营养的主要来源，Al-P、Fe-P为缓效磷源，而O-P和Ca10-P只是一种潜在磷源，生物试验表明，改良土的供肥能力强，肥力水平高；而流沙对施肥反应敏感，产量增加显著。
|
| 关 键 词： | 形态 无机磷 有效性 磷素 流沙 土壤改良 评价 生物试验 肥力 |
| 文章编号： | 1000-694X(2001)02-0195-05 |
| 修稿时间： | 2000年3月5日 |
Fractionation and
Availability of Soil Inorganic Phosphorus in Sand Soil and Improved One |
| |
| DUAN Zheng-hu,XIAO Hong-fang.Fractionation and
Availability of Soil Inorganic Phosphorus in Sand Soil and Improved One[J].Journal of Desert Research,2001,21(2):195-199. |
| |
| Authors: | DUAN Zheng-hu XIAO Hong-fang |
| |
| Abstract: | Using Jiang Bofan and Gu Yichus fractionation method forcalcareous soils inorganic phosphorus, we have studied the efficacy of aeolian soils inorganic phosphorus in the processes of shifting sand fixation in Shapotou region. The results indicated that Ca2-P accounts for 3.1% of total inorganic phosphorus, Ca8-P 11.4%, AI-P 7.0%, Fe-P 5.3%, O-P 0.14% and Ca10-P 73.2% in shifting sand soil, respectively; Ca2-P accounts for 1.7% of total inorganic phosphorus, Ca8-P 7.2%, AI-P 5.1%, Fe-P 3.8%, O-P 0.08% and Ca10-P 82.12% in ameliorated soil, respectively. Among these Ca2-P and Ca8-P are main fraction of crop phosphorus nutrition, AI-P and Fe-P are postpone phosphorus, O-P and Ca10-P are all potential phosphorus. |
| |
| Keywords: | inorganic phosphorus fractionationl efficacy phosphorus nutrition shifting sand |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
|
