Cite this article: | 朱光艳.冲水洗盐对滨海盐碱地盐分变化的影响[J].灌溉排水学报,0,():-. |
| Zhu Guangyan.冲水洗盐对滨海盐碱地盐分变化的影响[J].灌溉排水学报,0,():-. |
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Effect of washing salt by washing water on salinity variation in coastal saline and alkaline land |
Zhu Guangyan1,2
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1.Freshwater Fisheries Research Center of ChineseAcademy of Fishery Sciences;2.China
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Abstract: |
Through the method of water diversion and scour, the temporal and spatial changes of salt factors in saline and alkaline land were studied. In this paper, tangshan, the hardest-hit area of saline and alkaline land, was selected as the study sample to analyze the salinity of soil in the sample point by combining field sampling and indoor analysis.The results showed that with the increase of washing times, the median SAR value (P ﹤0.05) and PH value (P ﹤0.05) of the soil presented a gradually decreasing trend.Salinity (P ﹤0.05) increases with the increase of month, the maximum salinity is 8.30‰ in October.EC(P=0.05) and TDC(P 0.05) show a trend of decreasing and then increasing, while the upper, middle and lower layers show different changes in different months.The salt and alkali ions in this experiment mainly consist of Na+ and CL-, the content of which, in turn, is CL-﹥Na+﹥Mg2+﹥SO42-﹥Ca2+﹥HCO3-﹥K+﹥CO32-, SAR and Na+ showed a very significant positive correlation, and the reduction of Na+ content in soil had a great effect on the treatment of saline-alkali land, providing a scientific basis for the treatment of saline-alkali land. |
Key words: Saline-alkali soil; Water flush; Salt ions; Coastal saline and alkaline land |
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