2026-10-13T06:13:24Z https://www.scidb.cn/oai

10.57760/sciencedb.iga.01150 2026-09-18T17:15:10Z

2026-09-18 A method for grazing ducks and returning straw to field in soda saline-alkaline paddy fields and its application doi:10.57760/sciencedb.iga.01150 en The present invention discloses a method for grazing ducks and returning straw to field in soda saline-alkali paddy fields and its application, belonging to the technical field of straw incorporation in soda saline-alkali paddy fields. The steps of the duck grazing and straw incorporation method include: after harvesting rice with stubbles, crushing the rice straw and spreading it into the paddy field, irrigating the field, grazing ducks until the thickness of the straw layer is reduced by ≥80% or the proportion of straw pressed into mud and covered by mud reaches ≥80%, stopping duck grazing and draining the paddy field, air-drying the field until no surface water remains, performing shallow tillage, and completing straw incorporation. The invention utilizes the flocking behavior and feeding-trampling activities of ducks, achieving effects such as surface soil muddification, compaction of the straw layer into the mud, and natural adjustment of the carbon‑to‑nitrogen ratio through duck manure by means of high‑density grazing and block‑by‑block advancement. Shallow tillage enables complete mixing of straw into the soil without damaging the structure of the subsoil layer. Additionally, shallow tillage breaks the capillary pores in the surface soil, thereby inhibiting the upward movement of salts from the subsoil with water. After implementing the technique until the spring ploughing of the following year, the straw decomposition rate is significantly increased to over 50%, with no obvious salt return observed. soda saline-alkaline paddy; grazing ducks; straw returning 刘宏远 PUBLIC https://creativecommons.org/licenses/by/4.0/ dataset Science Data Bank