Chen Xu1,#, Tianhao Luan1,#, Zexin Qi2, Xiaolong Liu3, Yaliang Liu4, Hui Sun5, Yueqiao Li1, Ning Sun1, Qian Li1, Shaofeng Bian1, Lihua Zhang1,*, Hongxiang Zhao1,*
Phyton-International Journal of Experimental Botany, Vol.94, No.11, pp. 3703-3719, 2025, DOI:10.32604/phyton.2025.071324
- 01 December 2025
Abstract Optimizing drip irrigation with straw mulch return represents a promising sustainable intensification strategy for revolutionizing regional water management. This 2-year controlled field experiment examined straw incorporation effects (removal and return) and drip irrigation levels (200, 350, 500 mm) on maize carbon-nitrogen metabolism, root bleeding sap characteristics, dry matter accumulation, and yield. Dry matter and yield increased with irrigation amount. Under 200–350 mm irrigation, straw return enhanced root bleeding intensity; elevated nitrogen, phosphorus, potassium, calcium, and magnesium concentrations in bleeding sap; and promoted soluble sugar and hydrolyzed amino acid contents, establishing material foundations for yield formation. More >
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