摘要
选择在含盐量0.5%以上的盐碱地种植6种盐生植物,每年测定土壤中氮、磷、钾、有机质和含盐量,经过3年的人工种植,发现6种盐生植物都能不同程度地改良盐碱,土壤含盐量逐渐减少,而氮、磷、钾和有机质含量逐年增加,影响程度为翅碱蓬>中亚滨藜>柽柳>白刺>地肤>罗布麻。另外,还研究了白刺和翅碱蓬对不同土层含盐量的影响,结果表明白刺对土壤深层改良效果较好,而翅碱蓬对土壤表层改良效果较好。
Six Halophytes were planted in salt-affected soils with salt content of 0.5% for three years and the contents of nitrogen, phosphorus, potassium, organic matter and salt were surveyed every year.The results indicated six Halophytes can improve salt-affected soil. The content of salt was reduced gradually, but the content of nitrogen, phosphorus, potassium, organic mater was increased year by year, respectively. The affecting degree was： Suaeda heteroptera Kitagawa 〉 Atriplex centralasiatica 〉 Tamarix chinensis Lour. 〉 Nitraria sibirica Paul. 〉 Kochia scoparia （ L. ） Schrad 〉 Apocynum venetum L. Besides, Suaeda heteroptera Kitagawa and Tamarix chinensis Lout. can affect salt content at different series of soil. It was proved that Tamarix chinensis Lour. can better improve soil in the depth, but Suaeda heteroptera Kitagawa can improve better the top layer of soil.
出处
《安徽农业科学》
CAS
北大核心
2006年第5期951-952,957,共3页
Journal of Anhui Agricultural Sciences
关键词
盐生植物
含盐量
改良土壤
生态效益
Halophytes
Salt content
hnprovement of salt-affected soil
Ecological benefit
