Abstract: Abstract: Some studies about the effects of organic fertilizer and soil modifier have been carried out, from which it can be concluded that organic fertilizer and soil modifier play an important role for the improvement of soil physical and chemical conditions, such as the decrease of soil mass, accumulation of soil nutrition, and increase of crop yields. Very few of the prior studies had systematically explored nutrient models of fertility combined with organic fertilizer or soil modifier, among which even fewer touched upon saline-alkali soil. In this study through a two-year field experiment of fertilizer and modifier, five nutrient models (high fertility, high fertility combined with modifier, high fertility combined with organic fertilizer, local normal fertility (CK) and around average fertility) were designed to research the effects of the application of fertilizer combined with modifier on light-moderate saline soils in the North China Plain. By the study some results could be concluded: 1) Simply relying on improving fertilizer might increase crop yield to some extent in a certain short period of time, but may result in secondary salinization that will restrict the sustainable utilization of saline soil sources, for soil salt content under the condition of high fertility increased obviously after two years of this experiment. Together with an appropriate amount of chemical fertilizer, application of organic fertilizer or modifier could significantly reduce soil salt content: after two years of study, soil salt contents under the condition of high fertility combined with organic fertilizer or high fertility combined with modifier decreased 44.14% and 33.48%, respectively, which showed a significant contrast to the results under the condition of high fertility. 2) High fertility combined with organic fertilizer was propitious not only to the accumulation of organic matter but also to the enhancement of total nitrogen and some available nutrients in the soil, which revealed that after two years of this experiment, available nitrogen and available potassium improved by 11.98% and 4.36%, respectively. Similar results were also reached under the condition of high fertility combined with modifier, for available nitrogen and available potassium improved by 5.97% and 2.04%, respectively, after the two year experiment. 3) Nutrient models of high fertility combined with organic manure or modifier was not only in favor of the accumulation of soil nutrient but was also favorable for the improvement of crop yields: compared with the yields under the condition of normal fertility in the second year of this experiment, yields of wheat reached higher than 6.35×103 kg/hm2, increased by 27.72% and 21.41%, respectively; yields of corn reached higher than 7.68×103 kg/hm2, increased by 12.85% and 10.44%, respectively. 4) Since the nutrient models of high fertility combined with organic fertilizer or soil modifier could reduce soil salt content, increase soil nutrition and improve crop yields significantly, compared with other fertilizer management models in this area, more attention should be paid to the application of organic manure and modifier to reduce soil salinity, increase field productivity and improve yield, which is meaningful for the sustainable utilization of soil resources in the North China plain. 5) Although this study should be pushed forward to reveal the mechanism of the above conclusions, it surely provides a useful reference for fertilizer management in the North China Plain, which is supportive for the formation of a scientific, efficient and sustainable fertilizer manipulation that leads farmers to having a higher income from fields.