High carbon soil repair fertilizer
（For paddy）
Product Description
This product is developed by the cutting-edge technology of the National Biochar Research Institute at Shenyang Agricultural University, guided by the concept of “crop straw carbonization and returning to soil for soil improvement”. Integrating biochar carbon sequestration technology with the growth requirements of rice, it is a high-efficiency carbon-based compound fertilizer designed for the entire growth cycle of rice. It aims to achieve multiple goals including soil carbon pool expansion, fertilizer reduction with enhanced efficiency, and stable rice yield increase, aligning with the development trend of low-carbon agriculture and providing scientific support for national food security and sustainable 耕地 (farmland) utilization.
Main Raw Materials
- Core Component: Biochar (carbon content ≥60%) produced by oxygen-limited pyrolysis of selected agricultural and forestry waste such as rice straw and husks. It features a rich porous structure and excellent adsorption properties.
- Nutrients: Contains macronutrients (N, P, K), micronutrients (Si, Zn, Mg, etc.), humic acid, amino acids, and functional microbial communities (e.g., Bacillus subtilis, phosphorus-dissolving and potassium-dissolving bacteria).
- Additives: Slow-release agents to ensure balanced nutrient release.
Benefits
- Soil Improvement & Carbon Sequestration
With strong stability, biochar can remain in the soil for hundreds of years, effectively enhancing soil carbon sequestration capacity to support the “dual-carbon” (carbon peaking and neutrality) goals. Its porous structure improves soil aggregate structure, enhances aeration and water-fertilizer retention, adjusts the soil carbon-nitrogen ratio, and alleviates soil acidification and compaction, creating a healthy rhizosphere microecology for rice. Long-term trials show that soil organic matter content can increase by 15%-20% after three consecutive years of application. - Yield Increase & Quality Enhancement
Precisely tailored to the nutrient demands of different rice growth stages, the fertilizer combines the effects of base and top dressing. It promotes effective tillering at the tillering stage, increases grain number per panicle at the booting stage, and improves 1000-grain weight at the grain-filling stage. Multi-year and multi-location trials confirm a 7.6%-11.6% yield increase for rice, while reducing chalkiness and optimizing amylose content for significantly improved taste and quality. Additionally, biochar’s adsorption properties reduce nutrient (N, P, K) loss, enhancing fertilizer utilization efficiency by over 20% and achieving yield stability with reduced fertilizer input. - Stress Resistance & Green Safety
Functional microbial communities activate soil vitality, promote rice root development, and enhance resistance to pests/diseases (e.g., rice blast, sheath blight), lodging, drought, and waterlogging. Free of harmful chemicals, the product utilizes recycled agricultural waste, reducing agricultural non-point source pollution from the source and meeting green agricultural production standards.
Application Method
- Base Fertilizer: Apply 80-100 kg per mu by broadcasting before rice transplantation, followed by rotary tillage to fully mix the fertilizer with the 耕层 (plow layer) soil.
- Top Dressing: Apply 20-30 kg per mu by broadcasting during the tillering stage, preferably combined with irrigation to promote tiller growth.
Cautions
- Local Adaptation: Adjust fertilization rates according to local soil fertility, rice variety, and target yield. Reduce dosage for high-fertility soils or fertilizer-tolerant varieties; increase slightly for low-fertility soils or fertilizer-loving varieties.
- Storage & Transportation: Store in a cool, dry, and ventilated place, avoiding direct sunlight and rain. Prevent packaging damage during transportation to maintain product quality.
- Safety Interval: Consult agricultural technicians before mixing with pesticides to ensure compatibility and avoid adverse reactions.
Scientific Support
Developed by the team of Chinese Academy of Engineering Academician Chen Wenfu over ten years, this product is backed by the National Biochar Research Institute and national key R&D projects. With 12 national invention patents, the technology has been validated through long-term field trials across multiple regions, providing a reliable technical and product guarantee for the green and low-carbon development of the rice industry.
