| 京郊潮土有效养分周年变化规律的研究 |
| |
| 引用本文： | 李棠庆,冯本立.京郊潮土有效养分周年变化规律的研究[J].北京农学院学报,1990(2). |
| |
| 作者姓名： | 李棠庆 冯本立 |
| |
| 作者单位： | 北京农学院农学系
(李棠庆)，北京农学院农学系(冯本立) |
| |
| 摘 要： | 在北京北郊高、中、低三种肥力水平的潮土上,研究了土壤有效氮、磷、钾的周年变化规律.结果表明;土壤有效氮的含量为冬、春季低于作物生长时期的夏、秋季,而有效磷、钾含量则是夏、秋季低于冬、春季.影响这种变化的因素,主要是气温、降水、作物吸收和土壤微生物的活性等.
|
| 关 键 词： | 土壤有效养分 周年变化 |
A STUDY ON THE ANNIVERSARY CHANGING REGULARITY OF AVAILABLE NUTRIENTS OF AQUALL IN SUBURB OF BEIJING |
| |
| Li Tangqing.A STUDY ON THE ANNIVERSARY CHANGING REGULARITY OF AVAILABLE NUTRIENTS OF AQUALL IN SUBURB OF BEIJING[J].Journal of Beijing Agricultural College,1990(2). |
| |
| Authors: | Li Tangqing |
| |
| Institution: | Li Tangqing |
| |
| Abstract: | The anniversary changing regularity of the available nitrogen, phosphorus and patassium of three different fertility degrees (high, middle. and low) aquall has been studied in the north suburb of Beijing. The results indicates that it had lower available nitrogen in Winter and Spring than that in Autumn and Summer; but higher available phosphorus and potassium in Spring and Winter than that in Summer and Autumn. The major influential factors of the changes are the atmospheric temperature, precipitation, plant absorption, the activity of soil microbe and so on. |
| |
| Keywords: | available soil nutrient anniversary changes |
| 本文献已被 CNKI 等数据库收录！ |
