松嫩平原农田和防护林土壤肥力差异
Soil Fertility Differences between Shelterbelt and Farmland at Songnen Plain
武燕 1王琼 2仲召亮 3裴忠雪 3王文杰3
作者信息
- 1. 东北林业大学森林植物生态学教育部重点实验室,黑龙江哈尔滨 150040;大庆师范学院,黑龙江大庆163712
- 2. 中国科学院东北地理与农业生态研究所,吉林长春130102
- 3. 东北林业大学森林植物生态学教育部重点实验室,黑龙江哈尔滨 150040
- 折叠
摘要
[目的]通过分析土壤肥力的变化讨论防护林的建设对土壤肥力的改善效果.[方法]以松嫩平原农田和杨树防护林为研究对象,在松嫩平原设置6个采样点,选取72对农田和防护林的配对样地,测定0 ～20 cm土壤碱解氮含量、速效磷含量和速效钾含量.[结果]杨树防护林营建后,明水和肇州防护林土壤速效磷含量显著高于对照农田(P＜0.05),富裕和肇东防护林土壤速效钾含量比对照农田显著升高(P＜0.05);整体数据分析显示,防护林土壤速效钾含量升高63.1％ (P ＜0.05).[结论]松嫩平原农田防护林建设后,通过提高土壤速效钾的含量改善了土壤肥力.
Abstract
[Objective] To discuss the effects of shelterbelt construction on the soil improvement by analyzing the changes of soil fertility.[Method] With shelterbelt plantation and farmland as the research objects,six sampling sites were designed in Songnen Plain.A total of 72 pairs of sample fields of shelterbelt plantation and farmland were selected to detect the alkali-hydrolyzable nitrogen content,rapidly available phosphorus content,and rapidly available potassium content in 0-20 cm soil.[Result] After the construction of poplar sheltbelts,soil rapidly available phosphorus contents in Mingshui and Zhaozhou shelterbelts were significantly higher than that of farmland (P ＜ 0.05).Soil rapidly available potassium contents in Fuyu and Zhaodong shelterbelts were significantly higher than that of farmland (P ＜ 0.05).Overall data analysis indicated that the rapidly available potassium content enhanced by 63.1％ (P ＜0.05) in soil of shelterbelt plantations.[Conclusion] Shelterbelt establishment in Songnen Plain improves soil fertility by increasing the content of rapidly available potassium.
关键词
农田/防护林/土壤肥力Key words
Farmland/Shelterbelt/Soil fertility引用本文复制引用
基金项目
黑龙江省杰出青年基金(JS201401)
中央高校基本科研业务费专项资金项目(2572014EA01)
出版年
2016
国家科技期刊平台
NSTL
维普
万方数据