草业科学2017，Vol.34Issue(5)：932-942,11.DOI:10.11829/j.issn.1001-0629.2016-0327
不同植被覆盖盐碱地碱化特征及养分状况
Alkalization characteristics and cutrient status of different vegetation
摘要
Abstract
It is important to develop and utilise saline-alkali land for protecting,improving the quality,and increasing the area of cultivated land.This research adopts the conventional analytical method for estimating organic matter and available nutrient content,alkalization,and ion composition in the soil of West Liaohe Basin at depths of 0-5,5-15,15-30,and 30-50 cm,across eight vegetation.Nutrient content in saline-alkali soil differed among the eight ecological landscapes studied.Organic phosphorus content was higher in saline-alkali land growing corn,and Leymus chinensis and Setaria viridis.Similar or relatively low nutrient content,but significant difference among the soil profile layers was found in Chloris virgata and Suaeda glauca landscapes,and in bare land(P＜0.01).The characteristics differed significantly among the four soil layers (P＜0.01).The pH,ESP,and salinity were generally low in the four soil layers of areas growing L.chinensis and S.viridis.Na+,CO32-,and HCO3 content were very high within a depth of 0-5 cm S.glauca covered and bare landscapes.CO32-and HCO3-content were lower on saline-alkali land that grew corn,L.chinensis and S.viridis.There were significant differences in the ion composition among four soil layers of same ecological landscape (P＜0.01).Bare landscapes develop when the salinity of soil reaches a certain level.In conclusion,the present study can provide atheoretical basis for reasonable restoring salinized land.关键词
植被/盐碱地/剖面/速效养分/碱化度/离子组成/西辽河流域Key words
vegetation/saline-alkali soil/profile/available nutrient/alkalization/ion composition/West Liaohe Basin分类
农业科技引用本文复制引用
范富,张庆国,马玉露,孙德智,萨如拉,苏雅乐其其格,孙海岩..不同植被覆盖盐碱地碱化特征及养分状况[J].草业科学,2017,34(5):932-942,11.基金项目
内蒙古自然科学基金项目(2013MS0605) （2013MS0605）
内蒙古自治区科技创新引导项目 （）
内蒙古民族大学重点项目(NMDGP1410) （NMDGP1410）
