This standard specifies the production environment and production management measures for pollution-free food carrots. This standard applies to the production of pollution-free food carrots. NY/T 5085-2002 Technical regulations for the production of pollution-free food carrots NY/T5085-2002 Standard download decompression password: www.bzxz.net

ICS 65. 020.20
Agricultural Industry Standard of the People's Republic of China
NY/T5085-2002
Pollution-free food
2002-07-25 Issued
Carrot (Production Technical Specifications
2002-09-01 Implementation
Issued by the Ministry of Agriculture of the People's Republic of China
NY/T5085--2002
This standard is proposed by the Ministry of Agriculture of the People's Republic of China.
The drafting units of this standard are: College of Plant Protection, China Agricultural University, and Vegetable Quality Supervision, Inspection and Testing Center of the Ministry of Agriculture (Beijing). The main drafters of this standard are: Liu Zhiqi, Liu Su, Du Xiangge, Sun Zhiyong, and Wang Huimin. 172
1 Scope
Technical regulations for the production of pollution-free food carrots This standard specifies the production environment and production management measures for pollution-free food carrots. This standard applies to the production of pollution-free food carrots in my country. 2 Normative referenced documents
NY/T5085--2002
The clauses in the following documents become clauses of this standard through reference in this standard. For any dated referenced document, all subsequent amendments (excluding errata) or revisions are not applicable to this standard. However, parties to an agreement based on this standard are encouraged to study whether the latest versions of these documents can be used. For any undated referenced document, the latest version shall apply to this standard. GB3A286 Standard for the safe use of pesticides||tt ||GB/T8321 (all parts) Guidelines for the rational use of pesticides NY/T496 General guidelines for the rational use of fertilizers
VY5010 Environmental conditions for the production of pollution-free food vegetables 3 Production environment
Should comply with the provisions of NY5010, and select loam or sandy loam with fertile soil, loose soil and good drainage. 4 Production management measures
4.1 Preparation before sowing
4.1.1 Variety selection
Select varieties that are disease-resistant, high-quality and high-yield, strong in stress resistance, wide adaptability and good commercial quality. Planting quality: seed purity 92%, cleanliness ≥85%, germination rate 80%, moisture ≤10%. 4.1.2 Land preparation
Early plowing and frequent turning, crushing the soil and making it flat. The depth of tillage depends on the variety. The depth of tillage is generally 25cm to 30cm. 4.1.3 Base fertilizer
According to NY/T496, determine the corresponding amount and method of fertilizer application according to soil fertility and local recommended fertilization measures. The amount of base fertilizer should be more than 70% of the total amount of fertilizer.
4.1.4 Cultivation
The area, soil, variety and other conditions vary. However, when the soil layer is thin and wet, it is advisable to make high rafts, with a width of 50cm and a height of 15cm to 20cm, and two rows of rafts on the sleeping surface.
4.2 Sowing
4.2.1 Seeding amount
Drill sowing: Generally, the seed amount per 667m2 is 0.8kg to 1.0kg. Broadcasting: The seed amount per 667m2 is 1.5kg to 2.0kg. 4.2.2 Sowing method
Drill sowing or broadcast sowing. High row sowing, flat row sowing or broadcast sowing. The row spacing of row sowing is 15cm~20cm, and the depth is about 2cm~3cm; for broadcast sowing, first sow the seeds on the leveled surface soil, and then cover and press with fine soil. 4.3 Field management
4.3.1 Thinning and weeding
NY/T5085-2002
Thinning and weeding should be carried out 2~3 times during the seedling period. When the seedlings have 2~3 true leaves, the first thinning is carried out, keeping the plant spacing 3cm, and combining shallow tillage between rows to weed and loosen the soil. When the seedlings have 3 to 4 true leaves (seedling height is about 10 cm), the second thinning is carried out, with a seedling spacing of about 6 cm; when the seedlings have 5 to 6 true leaves, the seedlings are finalized, and overcrowded plants, inferior plants and diseased plants are removed, and the plant spacing is maintained at 12 cm to 15 cm. 35,000 to 40,000 seedlings are left per 667 m2. At the same time, inter-row cultivation and weeding are carried out once. The herbicide can be paraquat. The specific usage method is shown on the product label. While inter-row cultivation and weeding, the soil in the ditch is cultivated to the surface. 4.3.2 Watering
The time from sowing to emergence is long, so watering should be continued to keep the soil moist. 4.3.3 Topdressing
4.3.3.1 The time for topdressing should be determined according to soil fertility and growth conditions. Carrots are generally top-dressed twice. The first top-dressing is done after seedlings are set, with 15kg of nitrogen fertilizer and nitrogen-phosphorus-potassium compound fertilizer applied; the second top-dressing is done during the fleshy root expansion period, with 30kg of phosphorus-potassium fertilizer and nitrogen-phosphorus-potassium compound fertilizer applied. When applying fertilizer, dig a trench in the middle and lower part of the shoulder and then cover with soil. Quick-acting nitrogen fertilizer should not be used within 20 days before harvest. 4.3.3.2 The selected fertilizer should meet the relevant national product quality standards to meet the requirements of pollution-free food carrots for fertilizers. 4.3.3.3 Industrial waste, urban garbage and sludge should not be used. Organic fertilizers such as human and animal feces and urine that have not been fermented and decomposed and have not reached the harmlessness index should not be used. bzxz.net
4.4 Pest and disease control
4.4.1 Agricultural control
Reasonable layout, implementation of crop rotation, clean fields, strengthen intertillage and weeding, and reduce the number of pest and disease sources. 4.4.2 Pesticide control
4.4.2.1 Principles and requirements for the use of pesticides
4.4.2.1.1 It is prohibited to use highly toxic, extremely toxic, and high-residue pesticides and their mixed pesticides that are expressly prohibited by the state. The highly toxic and extremely toxic pesticides that are prohibited to use include: methamidophos, methyl parathion, parathion, monocrotophos, phosphamidon, phorate, methyl isofenphos, terbufos, methyl thiocyanate, phosphocyanate, systemic phosphocyanate, carbofuran, aldicarb, ethoxychlor, thiocyanate, coumaphos, fonothion, chlorfenapyr, fenamiphos, hexachlorvinphos, DDT, toxaphene, dibromochloropropane, chlorfenapyr, ethylene dibromide, herbicide, aldrin, dieldrin, mercury preparations, arsenic, lead, dicyprodinil, fluoroacetamide, fluorinated fluoride, tetramine, sodium fluoroacetate, and tetrasil. 4.4.2.1.2 When using chemical pesticides, relevant standards of GB4286 and GB/T8321 (all parts) shall be followed. 4.4.2.1.3 Rationally mix and rotate pesticides with different mechanisms of action or negative cross-resistance to prevent and delay the generation and development of pest and disease resistance.
4.5 Harvesting
When the fleshy roots are fully expanded and mature and meet the requirements of pollution-free vegetables, they can be harvested. 174
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