综合利用，盐碱地变丰产田

Core Insights - The article emphasizes the importance of high-quality agricultural land construction and the comprehensive utilization of saline-alkali land in China, highlighting the establishment of a breeding innovation system for saline-alkali land [1] Group 1: Saline-Alkali Land Utilization - The report outlines over 40 innovative achievements in biological breeding, productivity enhancement, and ecological utilization of saline-alkali land in China [2] - Various regional governance models and technical modes have been created, such as the "dry sowing and wet harvesting" in the Northwest oasis area and integrated grass and livestock systems in the Ningxia Hetao Plain [2] - In Jiangsu's coastal saline-alkali areas, annual rainfall supports a rotation planting model, achieving a 20% increase in soil organic matter and maintaining soil salinity below 2‰ [2] Group 2: Challenges and Solutions - The comprehensive utilization of saline-alkali land faces challenges such as water resource shortages and mismatched salt control technologies [3] - The report stresses the need for effective drainage systems and a dynamic monitoring network for soil salinity to implement differentiated irrigation and drainage standards [3] Group 3: Agricultural Development - The report advocates for a combination of "suitable crops for the land" and "suitable land for crops" to maximize the potential of saline-alkali land [4] - It highlights the high functional component content and biological activity of many saline-alkali agricultural products, urging the development of a data-sharing platform for salt-tolerant plant resources [4] Group 4: Breeding Innovation - Successful varieties such as the Huanghua drought-resistant wheat and saline-alkali goji berry have been developed, enhancing the value of saline-alkali agricultural products [5] - The National Saline-Alkali Land Comprehensive Utilization Technology Innovation Center has established a breeding innovation system, with 68 new salt-tolerant crop varieties developed and promoted across 26.32 million acres [6]