Buried Straw Layer Coupling Film Mulching Regulates Soil Salinity of Coastal Tidal Soil and Improves Maize (Zea mays L.) Growth

[Aims] The saline soil in continuous silting tidal areas will become a crucial reserved land resource China. A prominent problem is controlling salinization for improving agricultural water and resources’ productivity coastal areas. [Methods] An experiment was conducted to study the effects of different mulching tillage measures on salt-water status maize growth. There were four treatments: (1) film (FM), by only setting transparent plastic (with thickness 6 μm) surface soil; (2) straw deep-burying (SDB), which buried as layer at depth 30 cm; (3) combining mulch with deep-buried (F+S), cm surface; (4) control (CK), simulating standard local practice. [Results] results showed that storage (SWS) under FM F+S significantly higher than others, best role conservation. had reasonable effect salinity regulation during whole growth stage; salt content 0–30 decreased 1 g/kg 0.74 FM, respectively. Compared CK, plant height, LAI, SPAD value, yield all improved tillage. process water-use efficiency (WUE) more those other treatments. [Conclusions] Overall, can be recommended suitable strategy regulating moisture, thus crop