Protection and Quality Requirements of Jasmine in Hengxian County

It can be planted when the monthly average temperature is above 12℃. The planting density is controlled at about 45,000 holes per hectare, with 2-3 plants per hole.

(2) pruning.

Pruning should be carried out from early March to late March in spring, and the pruning height should be about 20cm to 30cm. Pruning should be carried out at the cut of 2 cm to 3 cm in the previous year, and low shear renewal should be carried out every 4 to 5 years.

(3) Soil and fertilizer management.

After pruning every spring, farm manure 15 to 22.5 tons or bio-organic fertilizer 18 to 12 tons should be applied per hectare. In the growing season, compound fertilizer can be applied appropriately, and nitrogen, phosphorus, potassium and trace elements can be applied reasonably. Weed and loosen the soil regularly to keep the soil loose.

(4) pest control.

Physical methods are mainly used for pest control. Prohibit the use of highly toxic and highly residual pesticides.

(5) harvesting.

Choose "ripe buds" instead of "white flowers" and "green buds". 1 1 dig before dark, and try to postpone the flower picking time.

(6) Quality characteristics.

1. Sensory characteristics:

(1) Bud size: Each hundred buds weigh about 23g spring flowers, 30g ~ 35g budding flowers and 26g autumn flowers.

(2) Strong aroma: high aroma depth.

(3) It takes a long time to smell incense: it starts from 8: 00 pm to 9: 00 pm and lasts until about 10 the next morning.

2. Physical and chemical indicators:

Flowers contain jasmine oil 0.4‰~ 0.5‰, linalool ≥ 17.0%, vinyl benzoate ≥1/0/0.5%, benzyl acetate ≥6.0%, jasmone ≥4.8%, methyl anthranilate ≥3.5% and indole >. Producers within the protection range of geographical indication products of Jasmine in Hengxian County may apply to Hengxian Bureau of Quality and Technical Supervision of Guangxi Zhuang Autonomous Region for the use of "Special Marks for Geographical Indications Products", which shall be announced and approved by AQSIQ.

Since the date of this announcement, local quality inspection departments have begun to implement geographical indication product protection measures for jasmine in Hengxian County.