Aquaculture Tech Spotlight: National Fisheries Authority Promotes "135" Multi-Crop Shrimp Farming Model for Inland Saline-Alkaline Waters

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1. Event Overview: National On-Site Exchange Held in Boxing, Shandong

On June 4, the National Fisheries Technology Extension Center, together with Shandong Provincial Department of Agriculture and Rural Affairs, hosted an on-site exchange meeting for the "135" High-Efficiency Multi-Crop Farming Model of Pacific White Shrimp in Boxing County, Binzhou City. This event is a key initiative to roll out new agricultural technologies at scale and drive the green transformation of fisheries.

Officials from the Ministry of Agriculture and Rural Affairs, Shandong fisheries authorities, as well as over 60 representatives from national fisheries extension agencies, research institutes and shrimp farms across the country attended the conference. The agenda featured expert technical lectures and field visits to demonstration bases, focusing on bottlenecks of shrimp farming in inland saline-alkaline waters and building a nationally replicable high-yield eco-farming benchmark.

Definition of the "135" Model

It is a rotational farming system tailored for inland saline-alkaline water:

10 days for post-larvae nursery, 30 days for the first crop grow-out, 50 days for the successive second crop. Compact crop cycles, industrialized facilities and ecological wastewater treatment enable multiple harvests per year, drastically boosting utilization of ponds and saline-alkaline water resources.

2. Industry Background: Inland Saline-Alkaline Shrimp Farming Becomes a New Growth Driver

China’s white shrimp industry has been rapidly expanding inland, utilizing idle saline-alkaline land and underground brackish water for low-salinity shrimp culture. This practice revitalizes underused water and land resources and raises fishermen’s income.

Nevertheless, inland shrimp farming has long suffered obstacles including poorly adapted fry, single annual crop cycles, frequent disease outbreaks, inadequate wastewater treatment and low digitalization. The "135" multi-crop model directly addresses these pain points and serves as a highly demonstrative standard for standardized, eco-friendly shrimp farming and full industrial chain development.

3. Three Core Priorities for National Rollout

The National Fisheries Technology Extension Center outlined three technical strategies to support nationwide adoption of the "135" model based on local conditions:

1. Strengthen High-Quality Fry Supply Chain

   Select and popularize fry with fast growth, strong stress resistance and high adaptability to inland saline-alkaline water, cutting farming losses and securing stable fry supply for successive multi-crop cycles.

2. Develop Replicable Saline-Alkaline Shrimp Farming Templates

   Form standardized rotational culture protocols featuring low input costs, quick returns and stable yields, prioritizing demonstration promotion in northern regions with concentrated saline-alkaline land.

3. Integrate Complete Supporting Green Technologies

   Combine intelligent aeration & feeding equipment, eco-friendly disease prevention, ecological effluent remediation and digital water quality monitoring to build a closed-loop sustainable farming system balancing high output and environmental compliance.

Local authorities are instructed to leverage native resource endowments, upgrade farming facilities referencing demonstration bases, and extend upstream and downstream industrial chains to achieve long-term sustainable inland shrimp production.

4. On-Site Exchange Highlights: Expert Lectures & Full-Value-Chain Base Tours

4.1 Professional Technical Presentations

Three senior industry researchers delivered practical special lectures:

• Zhang Haiyang, Deputy Director of Boxing Fisheries Service Center: Local field implementation experience of the "135" saline-alkaline shrimp model;

• Yuan Julin, Former Researcher of Zhejiang Freshwater Fisheries Research Institute: Eco-friendly disease control for inland white shrimp;

• Che Xuan, Researcher of Fishery Machinery and Instrument Research Institute, CAFS: Industrial recirculating aquaculture systems (RAS) and digital fishery equipment.

4.2 Field Visits to Full Industrial Chain Demonstration Zones

Participants inspected five complete production segments: superior fry breeding workshops, industrial recirculating grow-out tanks, ecological wetlands for farming wastewater purification, digital water quality monitoring platforms, and supporting storage & processing facilities for the whole industrial chain.

Farmers and technical practitioners agreed the mature, field-proven model is highly operable and replicable, offering clear technical routes and development directions for inland shrimp farming nationwide.

Closing Industry Analysis

1. Resource Utilization: Unlocks underdeveloped inland saline-alkaline land, breaking the historic coastal monopoly of shrimp farming and creating new industrial growth;

2. Economic Efficiency: Rotational multi-crop cycles raise annual output per water body, extend supply windows and capture high off-season market prices;

3. Environmental Compliance: Integrated wastewater treatment, green disease management and digital monitoring resolve major environmental compliance risks for inland aquaculture;

4. Industry Promotion: Officially endorsed by national fisheries authorities as a unified standardized template, lowering trial-and-error costs for small and medium-scale farmers for nationwide mass adoption.

Inland saline-alkaline shrimp farming will remain a key supported sector in the coming years, with the "135" multi-crop high-efficiency model as the core upgrade solution for aquaculture practitioners pursuing higher productivity and sustainability.

Source: Official Release of National Fisheries Technology Extension Center