Salt-Water Dynamics in Soils: V. Salt Balance in Soil ProfilesEnglish Full Text

YOU WEN-RUI and MENG FAN-HUA(Institute of Soil Science, Academia Sinica, P.O. Box 821, Nanjing 210O08 (China )

Abstract: Salt balance in simulated soil columns was calculated on the basis of a large amount of long termobservation data. The results showed that under the climate conditions of senii-arid region of the Hnaiig-Huai-Hai Plain, the soils in the columns were under salt accumulation conditions when the groundwater depthwas controlled at less than 2.0 m, and under desalinization conditions when at larger than 2.5 m. In the soilcolnmns with clay soil and silty loam soil intercalated with a clay layer, the aniount of salt accumulated wasfar less than that in the soil column with silty loain soil throughout the whole profile. Under no irrigationconditions crop planting niay increase groundwater evaporation and hence salt accumulation in soil, mforingthe soil colnmns under desalinization be under salt accumulation conditions.

Keywords：

salt balance; sait-water dynamics; soil profile;

Series：
(D) Agriculture
Subject：
Fundamental Science of Agriculture; Agronomy
Classification Code：
S153

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Salt-Water Dynamics in Soils: V. Salt Balance in Soil ProfilesEnglish Full Text

YOU WEN-RUI and MENG FAN-HUA(Institute of Soil Science, Academia Sinica, P.O. Box 821, Nanjing 210O08 (China )

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