Water-Soluble Fertilizer 10-4-42 High Potassium
Fruit Enlargement & ColouringPowder
High-Potassium Punch — Fruit Enlargement & Colouring in One Step
所属分类：Water-Soluble Fertilizers
规格：5 kg × 4 bags / 10 kg/bag
适用作物：Fruit trees, vegetables (fruit enlargement stage)
技术指标：N-P₂O₅-K₂O: 10-4-42+TE, EDTA-Zn ≥0.01%, B ≥0.01%, pH 5.0–7.0
作用原理
High potassium (K₂O ≥42%) ensures abundant potassium supply during fruit enlargement, activating over 60 metabolic enzymes — especially sucrose synthase and amylase involved in sugar metabolism, directly driving translocation of photosynthates toward fruit (sink organs). The low nitrogen ratio (10%) effectively controls vegetative growth, preventing delayed maturity and redirecting more assimilates to fruit enlargement and sugar accumulation.
产品特点
- ✓Ultra-high potassium formula (K₂O ≥42%) specifically designed for fruit enlargement and colouring stages — abundant potassium significantly accelerates fruit enlargement, promotes sugar transport, and enhances fruit colouring
- ✓Low-nitrogen, high-potassium ratio effectively controls vegetative growth, redirecting more nutrients to reproductive growth and concentrated fruit development, reducing excessive shoot growth
- ✓100% instant dissolution — concentrated potassium directly absorbed by fruit, fast results, low dosage, high cost-effectiveness
- ✓Designed to alternate with balanced type: use 20-20-20 during seedling and vegetative stages, switch to high-potassium type during fruit enlargement for dual goals of high yield and quality
使用方法
- •Fruit enlargement stage: every 10–15 days, drip 3–5 kg/mu, fertigate 5–10 kg/mu
- •Colouring stage: slightly increase rate to 5–8 kg/mu per application for more uniform, deeper colouring
按作物施用指南
| 适用作物 | 施用方式 | 用量/浓度 | 施用时期 |
|---|---|---|---|
| Tomato (fruit enlargement) | Fertigation / drip | 5–8 kg/mu | From when the first cluster reaches egg-size, every 10 days |
| Watermelon / melon (enlargement) | Fertigation | 5–8 kg/mu | Starting 5–7 days after fruit set, 2–3 applications total |
| Grapes (colour break) | Fertigation / drip | 5–10 kg/mu | Starting 15 days before colour break, every 7 days |
| Apple / pear (enlargement) | Fertigation | 8–10 kg/mu | Fruit enlargement stage to pre-harvest, every 15 days |
