Hunan Yuannong High Tech Co., Ltd
Cold storage construction project
Supporting seed storage cold storage project
Location of cold storage project
638 Heping Road, Changsha City, Hunan Province
Design temperature and function of cold storage
The design temperature is 5-15 degrees, which is used to store fruits, vegetables and hybrids.
Yuan Longping Agricultural High Tech Co., Ltd. (hereinafter referred to as "Longping high tech") is a high-tech modern seed industry group named after Academician Yuan Longping, the father of hybrid rice, and the honorary chairman of Academician Yuan Longping. The company was founded in 1999 by Hunan Academy of Agricultural Sciences, Hunan Hybrid Rice Research Center, Academician Yuan Longping, etc., and was listed on Shenzhen Stock Exchange in 2000 (Stock Code: 000998); in 2004, Changsha Xindaxin group became the largest shareholder, promoting the company to build a forward-looking independent innovation system, strategically layout domestic corn, overseas rice and other emerging markets, and gradually In 2016, CITIC Group became the largest shareholder, actively promoted the company's strategic planning in the new period, greatly accelerated the pace of internationalization and participation in seed industry integration, and the company's business performance continued to grow rapidly. In 2018, it achieved a revenue of 3.579 billion yuan, realized a net profit of 791 million yuan attributable to shareholders of listed companies, and ranked among the top eight seed enterprises in the world Strong.
Longping high tech's main business focuses on seed industry, with hybrid rice, corn, vegetables, wheat, millet, sunflower seed industry as the core, cotton, rape and other seed industries as the extension, and vigorously carry out agricultural services. At present, the company's rice seed business takes the lead in the world, and the seed business of corn, vegetable, millet and sunflower takes the lead in China.
Cold storage construction site drawing
Seed cold storage Usage
Seed cold storage Air cooler
Cold storage equipment
Semi enclosed bizel is used for equipment Compressor condensing unit +Whole grain air cooler
Temperature design of seed cold storage
According to the length of seed storage period, there are different temperature and humidity regulations in seed freezer
1. Seed storage is a reliable material condition for agriculture
Through the observation and analysis of the temperature and humidity of hybrid rice and bract rice stored in the warehouse every quarter, the results showed that the annual average temperature of the warehouse was 11.2 ℃, and the average air humidity was 63.8%. The results showed that the seed germination rate of hybrid rice decreased by 2.3%, and the emergence rate of sexual hybrid maize decreased by 8.0%. The water content of seeds remained the same, and the economic benefits of stored seeds were obvious.
2. Short term storage of frozen seeds
It is used to store large-scale seed bank with temperature control of 16 ℃ ~ 30 ℃ and air humidity of 60% ～ 65%. Seed containers include paper bags, packaging bags, bags, glass bottles, etc. The moisture content of seeds was below 13%. The estimated service life of seeds is 2-5 years.
3. Frozen storage of seed in middle and later period
The temperature of seed bank is between 0 ℃ and 12 ℃ and the air humidity is not more than 65%. Seed containers are the same as those of long-term banks. The moisture content of seeds is 6% - 9%. The estimated service life of seeds is 12-40 years.
4. Long term storage of frozen seeds
For long-term storage of seeds, the temperature of the storehouse should be in the range of - 12 ℃ to - 30 ℃, and the air humidity should not exceed 65%. The international recommended standard for long-term storage of all normal seeds is - 16 ℃ or lower, and the moisture content of seeds is 5 ± 1% (based on wet weight). Sealed in airtight containers, such as sealed metal boxes, aluminum foil bags, plastic composite film bags, glass bottles, etc. The expected service life of seeds is 40-60 years, or longer.