磷石膏改良剂对土壤水分扩散率的影响

doi:10.13866/j.azr.2016.03.08

Abstract

Abstract: The object of the study was the salinized soils in four areas (Jinchang, Jingyuan, Guazhou and Xinjiang), the effect of different applied amounts of phosphate gypsum agent (0, 6 000, 12 000 kg·hm^-2) on soil moisture diffusivity was studied by the method of infiltration of horizontal soil column. The result showed that the effect of different applied amounts of ameliorant on soil moisture diffusivity in 4 areas was different. When the applied amount was below 6 000 kg·hm^-2, the phosphate gypsum agent accelerated the velocity of soil moisture movement; but when the applied amount was excessed 6 000 kg·hm^-2, the phosphate gypsum agent suppressed the velocity of soil moisture movement in the sample A, B and D. The velocity of soil moisture movement was obviously increased with the increase of applied amounts of ameliorant for the sample C, which revealed that the effect of ameliorant for the sample C was much better than that for the sample A, B and D.

Key words: phosphate gypsum agent, saline-alkali soil, infiltration of horizontal soil column, soil moisture diffusivity

CAO Shi-yu, GUO Quan-en, CHE Zong-xian, GAO Yuan, GE Hong-jun. Effects of Phosphate Gypsum Agent on Soil Moisture Diffusivity[J].Arid Zone Research, 2016, 33(3): 506-510.

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Effects of Phosphate Gypsum Agent on Soil Moisture Diffusivity

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