GB19174-2010

Kiwifruit nursery plants

猕猴桃苗木

GB 19174-2010 é uma norma nacional chinesa obrigatória vigente: Kiwifruit nursery plants. Setor: Alimentos. Foco: Segurança de produtos. Entrada em vigor: 1 de jan. de 2012.

A aplicabilidade depende do escopo do produto, da via de certificação, dos avisos da autoridade competente e das regras de transição. Solicite uma tradução ou verifique a fonte antes de usar este registro em uma decisão de conformidade.

Visão geral de conformidade

Esta visão geral está disponível por enquanto apenas em inglês.

Escopo e aplicabilidade

This standard applies to 1-year to 2-year-old kiwifruit nursery plants, specifically covering seedlings, self-root nursery plants, and grafted nursery plants. It explicitly prohibits the use of 3-year-old or older plants. It is relevant for agricultural producers, nurseries, and quarantine authorities involved in the cultivation and trade of Actinidia Lindl. varieties within China.

Requisitos técnicos

This standard specifies mandatory quality indicators for kiwifruit nursery stock, categorized into three grades (Grade 1, 2, and 3). The requirements cover the purity of varieties and rootstocks, ensuring that female and male plant flowering stages are synchronized. For the root system, the standard dictates parameters for side root morphology, distribution, quantity, length, and thickness. Regarding the nursery plant stem (shoot), the regulations include limits on the stem straightness, height, and thickness, with specific metrics varying based on the plant type and age. The standard also mandates that root and stem bark must be free from severe shrinkage or new damage, with strict limits on the total area of old damage. For grafted plants, specific criteria are set for the number of fully developed buds and the healing condition of the graft union, strictly prohibiting phenomena like 'big foot' or 'small foot' mismatches. All nursery plants must be completely lignified and free from designated quarantine pests and diseases, including root-knot nematodes, scale insects, and bacterial canker.

Métodos de ensaio

The standard outlines specific inspection procedures utilizing a combination of visual assessments and precise measurements. Visual inspection is primarily used for evaluating root morphology, bud development, graft union healing, and the presence of pests and diseases. Metric measurements require specific tools: steel tape measures are used for assessing side root length and stem height, while vernier calipers are mandated for measuring side root and stem thickness. A protractor is utilized to determine the stem straightness angle. For bark damage, a transparent film overlay method is used, which is then transferred to coordinate paper to calculate the total wound area. Random sampling methods are strictly defined for quality judgment, with sampling rates varying based on the total batch size, referencing the guidelines in GB 20464.

Perguntas frequentes

What types of kiwifruit nursery plants are regulated under GB 19174-2010?

This standard regulates 1-year to 2-year-old kiwifruit nursery plants, specifically covering seedlings, self-root nursery plants, and grafted nursery plants. It explicitly prohibits the use of 3-year-old or older plants.

Are there any major updates in GB 19174-2010 compared to the previous version?

The 2010 version clarified the scope of application, revised terminology, added new quality indicators, modified plant types and grading, and updated the inspection methods and rules. It is a full replacement for the 2003 edition.

How does GB 19174-2010 relate to international nursery stock standards?

The standard references several international guidelines, including BS 3936 Part 3:1990, the American Standard for Nursery Stock, and New Zealand's Biosecurity Standard. However, compliance with the specific Chinese grading and quarantine parameters is mandatory for market access.

The summary above provides a high-level overview of GB 19174-2010. To ensure complete compliance for your agricultural products entering the Chinese market, a precise and professional translation of the full technical specifications is essential. Purchase our high-quality English translation of GB 19174-2010 today to access all detailed parameters, grading tables, and testing procedures.

Indicações de aplicabilidade

Tipo: Produto
CCS: B61
ICS: 65.020.20
Órgão competente: Ministry of Agriculture and Rural Affairs
Comitê técnico: National Technical Committee on Crop Seeds of Standardization Administration of China

Relações

Substitui:GB 19174-2003