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| 几种退耕还林模式土壤溶液养分动态研究 | |
| 引用本文： | 梁剑,张健,王辉东.几种退耕还林模式土壤溶液养分动态研究[J].四川林业科技,2007,28(3):64-68. |
| 作者姓名： | 梁剑 张健 王辉东 |
| 作者单位： | 1. 西昌学院园艺系,四川,西昌,610013 2. 四川农业大学,四川,雅安,625014 3. 四川林业调查规划院,四川,成都,610081 |
| 基金项目： | 科技部重点项目;四川省重点学科建设项目 |
| 摘 要： | 对四川洪雅4种退耕还林模式进行了定位研究,分析了各退耕还林模式土壤溶液中有效氮、有效磷、水溶性钾的动态变化。结果表明:(1)四种模式的土壤溶液中氮素在夏季含量较高,磷素和钾素在7月至8月含量最低;(2)据各模式有效氮的变化规律,3～4月是施肥的最佳时期,并以施速效氮肥为主;(3)据各模式有效磷和速效钾的变化规律,在8月前施有效磷、钾肥效果最佳。 |
| 关 键 词： | 退耕还林(草) 定位研究 土壤氮素 土壤磷素 土壤钾素 |
| 文章编号： | 1003-5508（2007）03-0064-05 |
| 修稿时间： | 2006-11-30 |
Dynamic Studies of Soil Nutrients under Several Defarming-and-reafforestation Patterns |
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| LIANG Jian,ZHANG Jian,WANG Hui-dong.Dynamic Studies of Soil Nutrients under Several Defarming-and-reafforestation Patterns[J].Journal of Sichuan Forestry Science and Technology,2007,28(3):64-68. | |
| Authors: | LIANG Jian ZHANG Jian WANG Hui-dong |
| Abstract: | To understand dynamic changes of soil nitrogen,phosphate and potassium under different de- farming-and-reafforestation patterns,four patterns were chosen as sampling spots in Hongya,Sichuan dur- ing two-year time;The results showed that(1)the mean value of soil nitrogen under different defarming- and-reafforestation patterns was the higher in summer,and the mean values of soil phosphate and potassi- um of all patterns were the lowest in April and August;(2)Viewed from the changable regularity of availa- ble nitrogen,a suitable season for fertilizing nitrogen was between March and April;(3)Viewed from the changable regularity of soil available phosphate and dissolved potassium,a suitable season for fertilizing phosphate and potassium was before August. |
| Keywords: | Defanning-and-reafforestation(Planting grass) Site investigation Soil nitrogen Soil phosphate Soil potassium |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ | |