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《Pratacultural Science》 2017-05
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Alkalization characteristics and cutrient status of different vegetation

Fan Fu;Zhang Qing-guo;Ma Yu-lu;Sun De-zhi;Sarula;Suyaleqiqige;Sun Hai-yan;College of Agriculture,Inner Mongolia University for the Nationalities;  
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 virgataand Suaeda glaucalandscapes,and in bare land(P0.01).The characteristics differed significantly among the four soil layers(P0.01).The pH,ESP,and salinity were generally low in the four soil layers of areas growing L.chinensis and S.viridis.Na~+,CO_3~(2-),and HCO_3~- content were very high within a depth of 0-5cm S.glauca covered and bare land scapes.CO_3~(2-) and HCO_3~- 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(P0.01).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.
【Fund】: 内蒙古自然科学基金项目(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)
【CateGory Index】: S151.9+5
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