摘要
土体有机重构技术在黄河滩地项目上的应用表明:重构后耕作层水分入渗速率为11.84cm·d^(-1),相比原始状态的沙土降低了89%,相比原始状态的黄土降低了86%;重构后土体有机质、全氮、有效磷、速效钾含量均处于丰富水平,相比沙土分别增加了1.06倍、2.07倍、8.54倍和1.23倍;以容重为1.7g·cm^(-3)的黄土构建5cm厚人造犁底层,以容重为1.2g·cm^(-3)的黄土构建25cm厚耕作层效果最佳。
Land organic reconstruction technology was used to reconstructed soil mass.The results indicated that,infiltration rate of reconstructed soil mass was 11.84cm·d^(-1).It had a89% decrease compared with sandy soil and a 86% decrease compared with loess.Organic matter,total nitrate,available phosphorus and available potassium increased 1.06,2.07,8.54 and 1.23 times respectively compared with sandy soil.Using 1.7g·cm^(-3) to reconstruct 5cm plow pan and 1.2g·cm^(-3) loess to reconstruct 25 cm cultivated horizon was the best choice.
基金
陕西省重点科技创新团队计划项目(2016KCT-23)
关键词
黄河滩地
入渗速率
土体有机重构
养分含量
Yellow River beach
infiltration rate
land organic reconstruction
nutrient concentration
