How composting can improve soil quality
Composting significantly improves soil quality by improving the physical, chemical, and biological properties of the soil. The following are the specific effects and usage methods of compost on soil:
1、 The six major improvement effects of compost on soil
Improve soil structure
In sandy soil, composting increases water retention and nutrient adsorption capacity.
In clayey soil, composting reduces compaction, enhances drainage and breathability.
In soil, compost maintains structural balance and prevents degradation.
Improve soil fertility
Compost is rich in essential nutrients such as nitrogen, phosphorus, and potassium for plants, which are slowly released for long-term fertilization.
Reduce dependence on chemical fertilizers and lower the risk of soil pollution.
Enhance microbial activity
Composting provides nutrients for beneficial microorganisms (bacteria, fungi, earthworms) and promotes the decomposition of organic matter.
Microbial activity forms humus, enhancing soil health.
Adjust soil acidity and alkalinity
In acidic soil, composting slightly increases the pH value and reduces the over acidic state.
In alkaline soil, the organic acids in compost can lower the pH value and optimize the soil environment.
Optimize moisture management
In arid soils, composting enhances water retention capacity and alleviates plant water scarcity.
Composting improves drainage and prevents root rot.
Suppress pests and diseases
Healthy microbial communities compete with harmful pathogens to reduce the risk of soil borne diseases.
Some composting materials, such as plant ash, have a natural insecticidal effect.
2、 Scientific usage methods of compost
Mixing ratio
Mix compost with the original soil in a ratio of 10% -30% to avoid excessive fertility and gradually improve the soil.
surface cover
Cover the soil surface with 5-10 centimeters of compost to reduce water evaporation and inhibit weed growth.
Crop rotation and supplementation
Combining crop rotation system to avoid long-term single application of compost.
Regularly replenish compost every year to maintain soil organic matter content.
3、 The core of composting: carbon nitrogen ratio regulation
The composting effect depends on the carbon to nitrogen ratio (C/N) of organic materials, with an ideal ratio of 25:1:
High nitrogen materials (such as chicken manure and kitchen waste) need to be balanced with high carbon materials (such as withered leaves and straw) in proportion.
High carbon materials (such as straw and sawdust) need to be mixed with high nitrogen materials (such as animal manure) to accelerate decomposition.
For example, mixing chicken manure with withered leaves in a ratio of 1:3 can prevent ammonia volatilization and improve composting efficiency.
4、 The synergistic effect of microbial fertilizers
Microbial fertilizers enhance soil vitality through specific microbial communities:
Promote nutrient conversion: Microorganisms decompose organic matter and release nutrients that plants can absorb.
Improving soil structure: Microbial activity promotes the formation of granular structure and enhances water and fertilizer retention capacity.
Enhance disease resistance: Beneficial bacterial communities inhibit pathogenic microorganisms and reduce crop diseases.
5、 Efficient utilization of withered leaves
1. Cover the soil: Cover the ground with dead leaves in autumn and winter seasons to retain water and heat, and provide habitat for microorganisms.
2. Mixed composting: Add dead leaves to compost, adjust the carbon nitrogen ratio, and improve the quality of compost.
3. Crushing into soil: When plowing, crush dead leaves and mix them into the soil to increase organic matter.
4. Burning into plant ash: The plant ash formed by burning dead leaves is rich in minerals and can be directly used in soil to regulate pH and supplement nutrients.
Composting is an effective means of improving soil quality. By scientifically adjusting the carbon nitrogen ratio, using microbial fertilizers reasonably, and utilizing organic waste (such as dead leaves), soil structure, fertility, and biological activity can be significantly improved. Whether it’s home gardening or agricultural production, compost can provide long-term support for soil health and sustainable development.
