Soil sodicity and salinization is a major issues concerning agricultural production in northeast China. The effects of six treatments—no tillage (NT), no tillage and subsoiling (NTS), rotary and ridge tillage (RT), rotary and ridge tillage and subsoiling (RTS), rotary and flat tillage (FT), and rotary and flat tillage and subsoiling (FTS)—on soil physical and chemical properties and yields were compared from 2016 to 2018. The results showed that compared with the RT treatment, which is the traditional tillage method in this area, and the FT treatment, the NT treatment increased the soil water content (SWC) during the first-leaf growth stage (V1). The use of subsoiling increased the average daily temperature and the soil thermal time (TT_soil). Subsoiling contributed to the growth and development of deep roots and increased leaf area index (LAI) to intercept more radiation. The NTS treatment increased grain yield of maize (Zea mays L.) by 2.7–15.2%, nitrogen use efficiency (NUE) by 4.2–14.4%, and water use efficiency (WUE) by 5.4–16.5% compared with RT. In conclusion, NTS soil management practices appear to be a sustainable approach to farming in the semiarid region of the Songnen Plain.

中文翻译：

---

耕作方式对盐碱地土壤物理性质及玉米生长的影响

土壤碱化和盐渍化是东北地区农业生产面临的重大问题。免耕(NT)、免耕深松(NTS)、旋耕(RT)、旋耕(RTS)、旋平(FT)、旋平6种处理的效果耕作深松(FTS)——对2016-2018年土壤理化性质和产量进行比较。在第一叶生长阶段（V1）增加土壤含水量（SWC）。使用深松增加了日平均温度和土壤热时间（TT_土壤）。深松有助于深根的生长和发育，并增加叶面积指数 (LAI) 以拦截更多辐射。与 RT 相比，NTS 处理使玉米 ( Zea mays L.) 的籽粒产量提高了 2.7-15.2%，氮利用效率 (NUE) 提高了 4.2-14.4%，水分利用效率 (WUE) 提高了 5.4-16.5%。总之，NTS 土壤管理实践似乎是松嫩平原半干旱地区农业的可持续方法。