习近平总书记关切事｜种业振兴这五年，资源保护利用有成效

Core Viewpoint - The revitalization of China's seed industry is crucial for national food security and agricultural modernization, with a focus on self-reliance in seed technology and resources [2][3]. Group 1: Seed Industry Revitalization - President Xi Jinping emphasizes the importance of seed source security as a strategic issue related to national security, advocating for technological independence in the seed industry [2]. - The "Seed Industry Revitalization Action Plan" was approved in 2021, outlining a roadmap for transforming China from a major seed producer to a strong seed nation [2]. - Over the past five years, significant progress has been made in breeding breakthrough varieties to enhance food security and improve living standards [2]. Group 2: Crop Breeding Innovations - In Hainan, researchers are working on soybean breeding, aiming to close the yield gap with countries like the U.S. and Brazil by utilizing local climatic advantages [3][4]. - The introduction of high-yield and disease-resistant varieties, such as quality rice and wheat, has led to a significant increase in production quality, with over 55% of rice varieties now classified as high quality, up from 45% in 2020 [6]. - The average yield of maize has increased by 8% since 2020, reaching over 800 kg per mu [6]. Group 3: Utilization of Saline-Alkali Land - China has 1.5 billion mu of saline-alkali land, with 500 million mu suitable for grain cultivation, which presents a significant opportunity for expanding arable land and ensuring food security [8]. - Efforts are underway to develop salt-tolerant wheat varieties, with the "Jimai 60" variety expected to yield an average of 560.4 kg per mu in saline-alkali conditions by 2025, an increase of approximately 100 kg compared to standard varieties [8][9]. Group 4: Aquaculture and Marine Breeding - The South American white shrimp breeding program has transitioned from reliance on imported seeds to developing domestically bred varieties, enhancing competitiveness in both domestic and global markets [11][15]. - The newly developed "Zhongxing 2" shrimp variety shows over 20% increased resistance to bacterial infections and a 10% higher survival rate compared to previous strains [14]. Group 5: Genetic Resource Conservation - The ongoing national agricultural genetic resource survey has identified endangered local cattle breeds, leading to successful cloning efforts that have increased their populations [20][25]. - The establishment of a national livestock genetic resource bank aims to preserve and utilize agricultural genetic resources, positioning China as a leader in this field [25].