综合利用，盐碱地变丰产田（美丽中国）

Core Insights - The article emphasizes the importance of high-quality agricultural land construction and the comprehensive utilization of saline-alkali land as part of China's "14th Five-Year Plan" [1] Group 1: Saline-Alkali Land Utilization - China is gradually forming a regional governance model and a collaborative development pattern for saline-alkali land and characteristic agriculture [2] - The report highlights over 40 innovative achievements in the fields of biological breeding, productivity enhancement, and ecological utilization of saline-alkali land [2] - The annual organic matter content in soil has increased by 20%, with soil salinity levels maintained below 2‰ and pH levels below 7.8 in certain regions [2] Group 2: Agricultural Development Strategies - 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 [3] - It suggests differentiated management of saline-alkali land usage to promote diverse agricultural outputs based on land conditions [3] - The development of characteristic agricultural products from saline-alkali land has been highlighted, with successful cultivation of varieties such as Huanghua drought-resistant wheat and Zhanhua winter jujube [4] Group 3: Breeding Innovation - The establishment of a breeding innovation system for saline-alkali land is underway, with the introduction of new salt-tolerant varieties like "Jiyang Gu 12" achieving a yield of 317.9 kg per mu [5] - A total of 68 new salt-tolerant crop varieties have been cultivated, with 26.32 million acres of new varieties and technologies promoted nationwide [5]