A Detailed Guide to High-Quality Citrus Seed Varieties and Seedling Cultivation Methods

Citrus is a very common fruit in daily life, and it has many varieties, so when planting, people generally select relatively high-quality seeds. So which high-quality varieties are there? How should seedling cultivation be carried out? Below, the editor will tell everyone!

1. What high-quality citrus seed varieties are there?

1. Shiranui citrus (commonly known as ugly mandarin)

A Japanese variety, it matures in February to March of the following year in the Sichuan region, has strong disease resistance, strong parthenocarpy, a high seedless rate, and an average single fruit weight of 200-280 g. The ugly mandarin has bright red peel, slightly coarse oil cells, is easy to peel, and has soft, juicy, crisp and sweet flesh, with a sugar content of 13-14%, and in some regions as high as 16%, giving excellent quality.

2. Harumi citrus (commonly known as Papa mandarin)

Papa mandarin is a Japanese variety. The fruit is tall and oblate or inversely broad ovate, and it matures in January to February of the following year in the Sichuan region. Harumi citrus usually has a single fruit weight of 250 g, with large ones reaching 450 g, belonging to the large-fruit type. The peel is smooth and attractive, with a sugar content of 13.2%. It is usually seedless, with a crisp, tender, and juicy texture, a rich flavor, and a pleasant sweet-and-sour taste, giving very good quality. Harumi has strong disease resistance, wide adaptability, and stable yield. The peel is bright red and delicate, and the tree vigor is robust.

3. Ehime No. 38 citrus (commonly known as Red Beauty)

The Ehime line is a Japanese hybrid variety. It is early-maturing, with a maturity period of October to November in the Sichuan region. It has a beautiful and smooth appearance, with an average single fruit weight of 200 g. Red Beauty is easy to peel, has a sugar content of 15%, is seedless, has a delicate and melting texture, and is fresh and refreshing. It has strong cold resistance, especially good productivity, and no alternate bearing. It is a very promising early-maturing hybrid citrus variety.

4. Wogan citrus

A hybrid variety selected and bred by the Citrus Research Institute of the Chinese Academy of Agricultural Sciences in the Chongqing region. Its maturity period is February to March of the following year. It grows vigorously and is extremely productive, with an average fruit weight of 100-150 g. Wogan citrus has smooth peel, crisp and refreshing flesh, a melting texture, and a fresh fragrance, with a sugar content of 14-16%, reaching as high as 18%, making it one of the sweetest hybrid citrus varieties at present. This variety sets fruit very easily, so fruit thinning is required to ensure the proportion of high-quality fruit. With proper management, this variety has no alternate bearing.

2. How should citrus seeds be used for seedling cultivation?

1. Plastic greenhouse or glass greenhouse

Plastic greenhouses include single-span and multi-span series, assembled with galvanized steel pipe frames. The greenhouse is semi-circular arched, with a top height of 4-5 m. Single spans come in specifications such as 6 m, 8 m, and 10 m, with a length of about 30 m. A single-span greenhouse has an area of about 330 sq m and can raise 6,500-8,000 seedlings. In addition to plastic greenhouses, recently float glass has been used to build multi-span glass greenhouses, with a single arch span of 9.6 m. The top and surrounding sides use 5 mm/4 mm thick float glass, the gutter height is 3.0-4.0 m, the top height is 4.2-5.2 m, and the bay is about 4 m. Modern greenhouses use automatic control systems to control lighting, temperature, humidity, and fertilizer and water management in the greenhouse.

2. Seedling containers

Seedling containers include sowing plug trays or sowing boxes and seedling pots. Sowing boxes are used for sowing rootstock and are pressed from black hard plastic. One sowing box is divided into 5 small compartments, and 10 sowing boxes are connected together and assembled on an iron frame, allowing 50 seeds to be sown. Seedling pots are used to cultivate grafted seedlings. They are formed by pressing polyethylene film into shape, are cylindrical, with a diameter of 15 cm and a height of 30 cm. The bottom of each pot has 8 drainage holes, and each pot grows 1 seedling.

3. Preparation of culture soil

The culture soil substrate can be made by mixing peat soil and leaf mold. Using fermented sawdust and river sand mixed together, to each cubic meter of culture soil add 3/4 sawdust and 1/4 river sand, then add 10 kg of rapeseed cake, 2 kg of superphosphate, 1.25 kg of potassium sulfate, 1.5 kg of urea, 1.5 kg of ferrous sulfate, and 3 kg of dolomite powder.

4. Sowing and cultivation of grafted seedlings

The sowing time is close to the open-field sowing time. Water after sowing and keep sufficient moisture in the box. In the greenhouse, it is more suitable to control the temperature at 30-35 degrees C and the relative humidity at 80%-90%. After 5 months, when the rootstock seedlings reach more than 50 cm in height, transplant them into larger seedling pots.

Alright, that is all for the content the editor wants to share with everyone today. There are still quite a lot of citrus varieties. Above, the editor introduced several relatively high-quality varieties for everyone. When choosing citrus seeds, everyone can pay attention to them. In addition, when raising seedlings, you can refer to some of the methods above. If you find this article helpful, save it!

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