中文摘要：

土壤改良剂的研究与应用对改良盐渍化土壤具有重要意义。选取粉煤灰、脱硫石膏、双元改良剂（脱硫石膏＋牛粪）作为土壤改良剂,分别设定改良剂施用量和灌水量进行大田油葵种植实验。分析了改良初期,改良剂种类、改良剂施用量和灌水量对盐渍化土壤p H值、全盐含量（TDS）和油葵出苗率的影响。结果表明,T7处理（施脱硫石膏29.86 t/hm2、高灌水）土壤p H值降低最大,为2.36;TN6处理（施双元改良剂22.40 t/hm2、低灌水）土壤TDS降低值最大,为81.32%,而对照处理（未施改良剂）p H值和TDS最大降低值仅为1.45和76.06%;油葵出苗率最高的是TN1处理（施双元改良剂14.92 t/hm2、高灌水）,为70.83%,比对照处理最高值多37.16%;施加改良剂能有效降低土壤p H值和TDS,明显改善土壤状况,促进作物生长,且在灌水的合理调控下,能有效提高改良剂的改良效果。

英文摘要：

The soil amendments play an important role in improving the soil salinization. In this paper, the coal fly ash, the FGD gypsum, the dual modifier （desulfurization gypsum ＋ cow dung） are selected as the soil amendments, meanwhile, the compositions and application rates of the amendments and the irrigation amount are taken as the main influencing factors in the oil-sunflower-planting tests in the field to study their effects on the saltinizition soil pH values, the TDS, and the oil-sunflower seedling emergence rate in the early period of improvement. It is shown that the highest reduction amount of the soil pH value is achieved by the T7 treatment （application of the desulfurization gypsum of 29.86 t/hm2, high irrigation）, reaching 2.36. The highest reduction amount of the soil TDS is achieved by the TN6 treatment （application of the dual modifier of 22.40 t/hm2, low irrigation）, reaching 81.32%, but they are only 1.45 and 76.06% in the control treatment （no applications of amendments）. The highest oil-sunflower seedling emergence rate is achieved by the TNI treatment （application of the dual modifier of 14.92 t/hm2, high irrigation）, reaching 70.83%, 37.16% more than the control treatment. Application of the soil amendments can effectively reduce the soil pH value and the TDS, improve the soil conditions significantly, and promote the crop growth Furthermore, the effect of amendments can be enhanced with the proper regulation of irrigation.