吉林省黑土侵蚀区水土保持措施对土壤颗粒组成和速效养分影响分析

为了探索黑土区生态环境恢复与土壤质量修复途径，笔者在榆树大沟采用全坡段“S”型采集土壤样品方法，分析吉林省黑土侵蚀区水土保持措施对土壤颗粒组成和速效养分的影响。结果表明：目前水土保持措施下，生态修复措施II是短时期内吉林省黑土侵蚀区进行土壤肥力恢复较好的措施。各措施粘粒含量均不高于12.6%，土壤质地为壤土。速效养分含量受水土保持措施影响较大，各水土保持措施土壤养分含量总体不高。碱解氮含量与粉粒、粘粒含量均呈极显著负相关；速效钾含量与砂粒含量、粉粒含量呈极显著正相关，而与粘粒含量呈极显著负相关；速效磷含量与土壤颗粒组成之间无显著相关性。为遏制黑土退化的趋势和保障生态安全，应结合当前国家需求，在进行水土流失综合治理的同时积极利用当地丰富的秸秆资源进行土壤培肥。

The Analysis on Effects of Soil Particle Composition and Available Nutrient under Soil and Water Conservation Measures in Black Soil Erosion Area of Jilin Province

In order to seek the appropriate restoration method to eco-environment and soil quality in black soil erosion area, the effects of soil particle composition and available nutrient were discussed under different soil and water conservation measures in typical black soil in Jilin province through soil samples with S distribution in the whole slope at Yushu gully. The results showed that the measure of ecology restoration II would be the best choice to cure small watershed, and restore soil fertilize. The co...