A Detailed Guide to Superior Varieties of Calcium Fruit (Chinese Dwarf Cherry) Seeds and Seedling Raising Methods

Calcium fruit, also called Chinese dwarf cherry (Ou Li), is a new superior fruit variety unique to China, and it is called calcium fruit because it has multiple calcium-supplementing effects and extremely high nutritional value. Besides being eaten, calcium fruit also has ornamental value and processing value, and is therefore widely sought after by growers. At present, China has bred many varieties of Chinese dwarf cherry (calcium fruit), among which as many as 16 varieties have been identified and approved by relevant national departments, strongly promoting the rapid development of the calcium fruit planting industry in China. So which superior varieties of calcium fruit seeds are there? What are the seedling raising methods? Let's find out together.

Which superior varieties of calcium fruit seeds are there?

1. Calcium fruit No. 4

The fruit is oblate to round, the fruit surface is red to dark red, the flesh is red, crisp, and sour, with an average fruit weight of 6.0 g. This variety ripens from early September to early October in various regions. It is a main processing variety, used for juice making and wine brewing.

2. Calcium fruit No. 5

The fruit is round, the peel is yellow, the flesh is pale yellow, and the fruit is relatively large, with an average single fruit weight of 8.0-10.5 g. The fruit flesh is tender and fine, rich in juice, and it ripens in mid-August. It has strong productivity and is a processing variety, and can serve as a pollinator tree for variety No. 4.

3. Calcium fruit No. 6

The fruit is nearly round, the peel is dark red and glossy, the flesh is yellow, and the fruit has a strong sweet taste. The fruit is large, with an average fruit weight of 10.0-13.0 g, and it ripens in early August. Compared with other varieties, it has the characteristics of strong growth, high sugar content, high yield, and strong adaptability. It is a fresh-eating and processing variety.

4. Calcium fruit No. 7

The fruit is oblate, with an orange-yellow base color and pale yellow flesh. It has a beautiful appearance, a rich fragrance, and a sweet-and-sour taste. The average single fruit weight is 11.0-14.3 g, the fruit can be picked over a period of 20 days, and it has strong productivity. It ripens from late August to early September and is a dedicated fresh-eating variety.

What are the seedling raising methods?

1. Sowing and seedling raising

Collect mature fruit, extract the seeds, dry them, and store them in a cool, ventilated place. After seed treatment such as stratification is completed, sowing can be done in early March when 15% of the seeds have cracked their shells and sprouted. Use hole sowing, with a row spacing of 40 cm and a plant spacing of 15 cm, 3 seeds per hole, cover with 3-4 cm of soil, and then cover with plastic film. The emergence rate can reach more than 85%.

2. Green branch cutting seedling raising

In early to mid-May, select superior individual plants and collect current-year semi-lignified cuttings with a thickness of more than 0.4 cm. Immediately after collection, remove the leaves, leaving only 1-2 small leaves at the upper part, and immediately place them in clean water in a cool place. When inserting, first make a hole with a small stick slightly thicker than the cutting, then insert the cutting, and then wrap it tightly. After inserting, water thoroughly in time and spray water on the leaves, spraying 3-5 times a day. After inserting, spray 0.2% carbendazim or thiophanate-methyl once every 3 days to prevent disease. In this way, roots can form after 15-20 days.

3. Root burying seedling raising

This can be carried out from after leaf fall to before germination. In early winter, dig out roots 0.5-1 cm thick, cut them into 15-18 cm lengths, tie them in bundles of 50, attach a variety label, and store them in sand. In late February to early March of the following year, bury the roots. After burying, water thoroughly, then cover with plastic film, which can increase temperature and preserve moisture and improve the emergence rate and seedling survival rate.

4. Grafting seedling raising

Calcium fruit grows slowly and its branches are thin, so grafting mostly uses one-year-old seedlings and adopts the branch grafting method in early spring. For inferior varieties, the branch grafting method can also be used in spring to change them to superior varieties.

In general, there are many varieties and seedling raising methods of calcium fruit. Before planting, you must clearly identify the variety of the selected seeds, and then choose a suitable seedling raising method based on various factors. Only in this way can you help improve yield and quality.

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