Xieqiao, Haining
High-standard farmland improvement
650 mu (2023) + 82.3 mu (2024)
Bulk delivery, spreading and mechanical incorporation of biochar-based amendments across two consecutive high-standard farmland programmes.
Fertiliser Formulations
Nine formulations. One carbon that stays in the soil.
Zhongke Tongao Agricultural Technology (Jiaxing) turns the group's biochar into crop-specific fertilisers, growing substrates and soil conditioners — developed with Chinese soil scientists, proven on tea, grape, rice and vegetable ground across Zhejiang.
200,000 t
Residues processed each year
50,000 t
Fertiliser, biochar and substrate output
30,000 mu
Farmland improved each year
80 mu
Puyuan production park
Biochar-based organic
Tea organic fertiliser
Developed with leading Chinese soil scientists for tea gardens: biochar conditions and enriches the soil, raises nutrient-use efficiency and reduces mineral fertiliser input while lifting leaf quality.
Anji white teaWest Lake Longjing
Complete nutrition, long-lasting effect
Holds nutrients, resists drought
Promotes bud break
Protects the root system
Porous structure reduces toxicity
≥30%
Organic matter
≥4.0%
N+P₂O₅+K₂O
5.5–8.5
pH
≥70%
Germination index
+15%Tea yield · Anji, Huzhou · October 2020
Trial plots showed stronger bushes, earlier bud break and thicker stems against the local conventional fertiliser control.
Custom formulation
Send us your soil. We will design the fertiliser around it.
Beyond the standing catalogue we formulate for specific soils, crops, climates and rotation systems — including growing substrates, acidity conditioners and heavy-metal passivation products.
01
Soil testing
We sample and analyse your soil — organic matter, pH, nutrient balance, salinity, heavy metals.
02
Tailored formulation
Our scientists design a biochar, nutrient and microbial blend for your crop, soil type and season.
03
Field trial
A controlled trial block against your current practice, with yield and quality measurement.
04
Supply & service
Production at the Puyuan park, delivery, spreading and full-season agronomic support.
Application guide
Vegetables
500–800 kg/mu
Base dressing before planting
Fruit trees
400–600 kg/mu or 40 kg/tree
Ring application around the tree
Rice
500 kg/mu
Applied before transplanting
Tea
≈300 kg/mu
September–early October base dressing
Standards
- Biochar-based organic fertiliserNY/T 3618-2020
- Organic fertiliserNY/T 525-2021
- Superclass biocharQ/JXTA-001-2022
- Growing substrateQ/JXTA-001-2023
Soil improvement
Measured on real ground.
High-standard farmland programmes, acidified tea gardens, salinised greenhouse soils and raw-soil reclamation — delivered with testing, tailored amendment and mechanical incorporation.
Xinfeng smart farm, Jiaxing
Raw-soil improvement for ginger
Greenhouse ginger production
Newly cut raw soil in greenhouse bays was conditioned and tilled before planting, producing even emergence and healthy rhizome development.
Hangzhou tea gardens
Acidified tea-garden restoration
≈300 kg/mu, applied September–October
Applied as a base dressing, the biochar-based organic fertiliser raised tea-garden pH, reduced compaction and brought harvest forward by 1–2 days.
Xinhe village, Puyuan, Tongxiang
Provincial biochar fertiliser research base
10 mu standardised application research
Run with Zhejiang University of Science and Technology and the Tongxiang agricultural authorities: 3% rice-straw biochar reached 7,761.88 kg/ha, 23.4% above the unfertilised control and 9.2% above mineral fertiliser.
Xiuzhou, Jiaxing
Greenhouse grape soil programme
Salinised fertigation soils
Soil testing, a tailored amendment plan and Tongao grape fertiliser reversed surface salt accumulation and restored vine vigour and fruit set.
Jiaxing region
Field preparation and incorporation
200,000 t/yr residue processing network
Amendment is spread and mechanically incorporated before planting, backed by processing points across Jiaxing, Hangzhou, Jinhua and Anhui.
Enquiries
Tell us the crop and the soil — we will send a formulation and a trial plan.
contact@tongaogroup.com
