The crossroads of fertilizer selection: the game between organic and chemical

Starting from the common confusion among vegetable farmers, this article points out the core contradiction between organic fertilizers having long-lasting ecological effects but slow effectiveness, and chemical fertilizers having quick and efficient effects but damaging soil. By comparing the differences in nutrient release rate, soil impact, cost-effectiveness, and other aspects between the two, the necessity of scientific combination is highlighted.

Organic Fertilizer Usage Guide: Maturity is the Key, Paired to Show off Skills

1. Chicken manure: It is emphasized that it must be completely decomposed (2 months in summer) to avoid burning seedlings. It is recommended to mix it with cow manure in a 1:1 ratio, which can meet the rapid growth needs of leafy vegetables and extend the fertilizer efficiency period.

2. Plant ash: Emphasize its alkaline properties. Spraying it alone can enhance the disease resistance of root and stem crops such as potatoes, but it is strictly prohibited to mix it with urea (which can cause nitrogen volatilization).

3. Composting: It is recommended to use a method of composting kitchen waste and straw. After composting, using it as base fertilizer can significantly increase tomato sugar content (reference source data: spinach vitamin C increased by 20%).

Fertilizer application techniques: precise filling of deficiencies, risk avoidance

1. Compound fertilizer: It is recommended to mix it with compost as a base fertilizer to alleviate soil compaction problems; During the swelling period of eggplants, it is necessary to switch to high potassium compound fertilizers (such as 151530 ratio) to improve fruit quality.

2. Urea: Remind that its decomposition requires microbial involvement. It is recommended to apply it 35 days in advance to avoid delayed nitrogen supply during the critical growth period.

3. Medium and trace elements: For example, calcium fertilizer prevents tomato navel rot, boron fertilizer promotes broccoli flower bud differentiation (foliar spraying with 0.2% borax solution), emphasizing the importance of soil testing and fertilization.

Golden combination plan: fertilizer combination formula for different vegetables

Leafy vegetables: decomposed chicken manure (base fertilizer)+high nitrogen compound fertilizer (topdressing)+amino acid water-soluble fertilizer sprayed during the growth period (reference source: leaf thickening by 20%)

Solanaceous fruits: compost/cow manure (base fertilizer)+high potassium compound fertilizer during the expansion period+calcium magnesium foliar fertilizer (anti cracking fruit)

Root and stem type: grass ash (base fertilizer)+low nitrogen and high potassium fertilizer+microbial agent (inhibits soil borne diseases)

The Three Iron Laws of Scientific Fertilization

1. Maturity priority: Immature manure is prone to attracting insects and carrying bacteria, and composting needs to be fermented until it is black brown and odorless.

2. Avoid mixing list: The combination of plant ash with ammonium nitrogen fertilizer, phosphorus fertilizer with alkaline substances, etc. will reduce fertilizer efficiency.

3. Segmented supply: Base fertilizer accounts for 60% (deep plowing 20cm), with a focus on supplementing potassium and calcium during the flowering and fruiting period. Nitrogen fertilizer should be stopped 15 days before harvesting.

Conclusion: Let fertilizers become the "nutritionists" of soil