Abstract: The development of new quality productive forces has introduced a new spatiotemporal logic into urban development. Rising demand for mixed land use and spatial flexibility increasingly challenges the traditional land-use control system characterized by single function and fixed tenure. Local governments have therefore pursued a range of institutional innovations, yet practice still faces complex implementation chains, weak enforceability and limited market response. The underlying reason is that these innovations have already touched the restructuring of spatial rights, while policy and research still lack a systematic understanding of the logic of rights allocation. From a rights-allocation perspective, this paper first traces how traditional land-use control assigns real rights, and then analyzes three widely explored policy instruments - mixed land use, flexible tenure and lease-before-transfer, and industrial supervision agreements - showing how they add interactive negotiation and creditor-right arrangements onto real rights. These instruments improve the flexibility and precision of land-use control, but they also produce incomplete property rights and new institutional tensions. Through multi-case empirical analysis in Shanghai, the paper verifies the new spatiotemporal logic of new quality productive forces and reveals the real existence of these tensions. It then proposes five directions for policy optimization: classified registration of spatial rights, a progressive real-rights system, tiered disclosure and market- based exit mechanisms for industrial supervision agreements, a flexible joint-review mechanism combining comprehensive standard land with integrated project coordination, and procedural separation of government roles.