Abstract:
A field experiment was conducted to investigate the effect of freezing irrigat ion with saline water in winter on the dynamics of soil salinity and moisture in coastal saline soil. Four irrigat on amounts (0, 90, 135 and 180 mm)with the shallow brackish groundwater (15 g/L) were exploited in this experiment in winter. Results showed that top soillayer was well desalinized with freezing irrigation in the next spring when soil freezing layer thawed. The desalinizing ratiois 12. 7%, 73. 8% and 80.9% in 90, 135 and 180 mm irrigation treatments, respect ively. However the no irrigationtreatment showed intensive salinization in spring. The possible reason is that the ice layer restrains the freezing and thaw??ing process of the saline soil and the leaching effect of fresh water produced from the melted saline ice.
Key words:
Coastal saline soil,
Freezing action in winter,
Brackish water,
Saline soil reclamat ion
CLC Number:
LI Zhi-gang, LIU Xiao-jing, ZHANG Xiu-mei, SUN Jia-ling, NIU Zhen,. A Primary Study on the Reclamation of Coastal Saline Soil with Freezing Irrigation of Saline Water in Winter[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2008, 23(S1): 187-192. doi: 10.7668/hbnxb.2008.S1.045.