GB/T 35897-2018Pyropia yezoensis—Technical protocols for semi-floating raft cultivation (English PDF)
条斑紫菜 半浮动筏式栽培技术规范
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Issued by
SAMR; SAC
Level / Type
National · Recommended
Issue date
February 6, 2018
Implementation date
September 1, 2018
Scope
GB/T 35897-2018 is the English-translated version of 条斑紫菜 半浮动筏式栽培技术规范.
GB/T 35897-2018 sets out how to cultivate the red seaweed Pyropia yezoensis on semi-floating rafts, where the nets hang horizontally in a frame of piles, poles and short legs: at high tide the nets float, and at low tide the legs rest on the mudflat so the nets dry out of the water.
It covers the choice of sea area, the cultivation facilities, cultivation management and harvesting. For the site it asks for a flat sandy or silty bottom, seawater meeting GB 3097, a tide level that leaves the nets dry for 3 h to 5 h, salinity of 20 to 30, total nitrogen of 200 mg/m³ or more and a current of 30 cm/s to 50 cm/s.
Seaweed farmers and fishery extension services use it. It was issued on 6 February 2018 and has applied since 1 September 2018.
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Document preview — GB/T 35897-2018
National Standard of the People's Republic of China
- ICS
- 65.150
- Classification
- B 51
Issued by: State Administration for Market Regulation; Standardization Administration of the PRC
Contents
- Foreword
- 1 Scope
- 2 Normative references
- 3 Terms and Definitions
- 4 Sea area selection
Foreword
This standard was drafted in accordance with the rules given in GB/T 1.1-2009.
1 Scope
This standard specifies the terms and definitions for semi-floating oyster culture of Pyropia yezoensis and the selection and cultivation of sea areas. Technical requirements for facilities, cultivation management, harvesting, etc.
This standard applies to semi-floating lotus cultivation of P. yezoensis.
2 Normative references
The following documents are indispensable for the application of this document. For dated references, only dated versions apply to this document. For undated references, the latest version (including all amendments) applies to this document.
GB 3097 seawater quality standard
3 Terms and Definitions
The following terms and definitions apply to this document.
3.1 Semi-floating raft cultivation
During the cultivation period, the seaweed cultivation net is hung horizontally in a truss space composed of a pile, a truss, and a short bracket, and when seawater rises, the truss When the cultivation net floats on the surface of the sea, when the tide is low, the short pillars can stand on the mudflat, support the trusses and cultivate the nets to dry out of the sea.
4 Sea area selection
4.1 Substrate
With sandy and silty soil, the beach is flat.
4.2 Water Quality
Should comply with the provisions of GB 3097.
4.3 Tide level
Should choose to enable the cultivation of net curtain dry in the tide of 3h ~ 5h sea area.
4.4 Salinity
20~30.
4.5 Nutrients
It is advisable to choose a sea area with a total nitrogen content of 200 mg/m³ or more.
4.6 Flow rate
Seawater flow rate 30cm/s~50cm/s is appropriate.
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This preview omits tables, figures, formulas and parts of the technical clauses. The complete document — 15 pages — is available in the English PDF.
Referenced standards
Normative references
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