吉林省低山丘陵区水土保持措施对土壤颗粒组成和速效养分影响分析  

The Analysis of Soil Particle Composition and Available Nutrient under Different Soil and Water Conservation Measures in Jilin Low Mountain and Mound Area

作　　者：张玉斌[1] 曹宁[1] 许晓鸿[2] 苏晓光 

机构地区：[1]吉林大学植物科学学院,长春130062 [2]吉林省水土保持研究院,长春130033 [3]吉林省梅河口市水利局,梅河口135000

出　　处：《中国农学通报》2009年第20期287-291,共5页Chinese Agricultural Science Bulletin

基　　金：吉林大学农学部引进人才启动基金项目"东北典型黑土区侵蚀环境下土壤退化及恢复过程和生态健康评价"(430505010299);公益性行业(农业)科研专项"最佳养分管理技术研究与应用"(200803030);国家科技支撑计划项目"黄土高原水土流失综合治理工程关键支撑技术研究"(2006BAD09B01)

摘　　要：通过对吉林省低山丘陵区吉兴小流域不同水土保持措施0～20cm和20～40cm土壤机械组成和速效养分的测定,研究了通过对吉林省低山丘陵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,生态修复措施是短时期内吉林省东部低山丘陵区进行土壤肥力恢复较好的措施。各措施粘粒含量均低于裸地;0～20cm土壤粘粒含量普遍低于20～40cm土壤粘粒含量,20～40cm土壤砂粒含量低于0～20cm土壤砂粒含量。各措施0～20cm土层的速效养分含量总体上高于20～40cm土层。水土保持措施对土壤氮素养分的修复效果要好于P、K。速效P与20～40cm的粘粒含量呈极显著负相关,其他均无显著相关性。为遏制黑土区土壤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等资源进行土壤培肥。The soil particle composition and available nutrient in the depth of 0-20 cm and 20-40 cm were determined under different soil and water conservation measures in the low mountain and mound area in Jixing small watershed in Jilin province,effect of soil particle composition and under different soil and water conservation measures were discussed in detail.The results showed that the measure of ecology restoration would be the best choice to cure small watershed,and restore soil fertilize.The contents of clay of soil and water conservation measures were lower than which of bare plot, and the contents of clay in the depth of 0-20 cm were higher than which of 20-40 cm. The restore effect of soil available N was better than that of available P and available K. Available nutrient content and soil particle composition content was not significant correlation, except available P content and soil particle composition content in the depth of 20-40 cm was very significant negative correlation. To controlling black soil degraded tendency and ensuring ecology security, improvement of soil fertility should be considered with local plenty straw and stalk when soil loss was comprehensive cured corresponding to national demand.

关 键 词：低山丘陵区 水土保持措施 土壤颗粒组成 速效养分 吉林省 

分 类 号：S157.1[农业科学—土壤学]