The effect of irrigation quota on straw decomposition, nitrogen release, and maize nitrogen uptake.

Returning straw to the field can increase soil organic matter content, improve soil physical and chemical properties, enhance soil biological activity, and thus improve soil fertility. However, returning straw to the field has problems such as slow decomposition rate and delayed nutrient release. Reasonable water management is one of the important measures to improve the effectiveness of returning maize straw to the field.