发展生态循环农业，先弄懂有机肥的门道

Core Viewpoint - The article emphasizes the importance of accelerating the green transformation of agriculture through the development of ecological circular agriculture, which integrates agricultural production with environmental protection and efficient resource utilization [1] Group 1: Organic Fertilizer Quality - The variety of organic fertilizers includes manure, compost, green manure, cake fertilizer, and peat, with both commercial and homemade options available [2] - Commercial organic fertilizers must meet national standards and be registered with agricultural authorities, with labels indicating organic matter, nutrient content, moisture, and pH [2] - Farmers should assess the quality of organic fertilizers based on color, texture, and ensure they are free from harmful residues before application [2] Group 2: Application Quantity of Organic Fertilizer - Organic fertilizers are rich in organic matter but have lower nutrient content, requiring larger application amounts; for instance, organic fertilizers made from livestock manure typically contain 2%-4% nitrogen [3] - Proper dosage is crucial; insufficient application can lead to poor crop yield and health, while excessive application can harm soil structure and microbial activity [3] - A balanced approach to application is necessary to avoid soil compaction and ensure optimal nutrient supply [3] Group 3: Combined Application of Organic Fertilizer - The integration of organic and chemical fertilizers is encouraged to enhance nutrient efficiency and crop quality, particularly in ecological and circular agriculture [4] - Mixing different types of organic fertilizers can improve yield and protein content in crops, as demonstrated in trials with broccoli [4] - Timely application of liquid organic fertilizers during critical growth stages is essential to meet immediate nutrient needs of crops [4] Group 4: Conclusion - The development of ecological circular agriculture relies on the scientific application of organic fertilizers, with a focus on understanding their properties and adjusting application methods based on local conditions and crop needs [5] - This approach aims to improve soil quality, ensure crop yield and product quality, while minimizing environmental risks associated with over-application [5]