川西北高寒沙地土壤治理的关键：快速培肥土壤、增加有机碳

川西北高寒沙地土壤治理的关键在于快速培肥土壤、增加土壤有机碳、改善土壤理化性状以及提高保水保肥能力。'The key to soil management in the cold and arid sandy land of northwest Sichuan is to quickly cultivate soil, increase soil organic carbon, improve soil physical and chemical properties, and enhance water and nutrient retention capacity.' 这些措施对于改善该地区土壤状况具有重要意义，有助于提高土壤肥力，改善土壤结构，增强土壤抗旱能力，最终实现土地可持续利用。