Abstract:

The study focused on the reclaimed land in the urban ecological zone of Shuangliu District, Chengdu City. Based on the physical and chemical properties of reclaimed farmland soil, we analyzed the main obstacles that exist in the reclaimed land, and proposed effective methods on improving the fertility of reclaimed soil and efficient planting models, so as to provide reference for improving the soil quality and efficient planting models of reclaimed land in Chengdu Plain. The results showed that the soil in this area was slightly alkaline, and the contents of organic matter, total nitrogen, and alkali-hydrolyzable nitrogen in the soil were at a deficiency level. The contents of available phosphorus and available potassium were at a relatively low to moderate level. In response to soil obstacles in the reclaimed land of this area, such as high gravel contents, shallow soil layer, poor nutrient contents, low organic matter contents, and drought, an analysis was conducted on the improvement of soil fertility and efficient planting models in Chengdu reclaimed land, adopting measures such as removing coarse and impurities, constructing arable layer, increasing organic fertilizer, rotating green manure, and increasing application of soil conditioners to eliminate soil obstacles and improve soil fertility. Finally, the efficient planting models of Chengdu reclaimed land was analyzed.

Key words: reclaimed land, soil fertility, organic matter, tillage layer soil, obstacle elimination