Ganquan pear

I. Source of varieties

Beijing Forestry Bureau introduced it from Korea in 1999 and planted it in Beijing Huangqi nursery. Parent combination: late Sanji × Ganli. It was approved by Beijing in 2002.

2. Characteristic characteristics

This variety was selected from Korea and belongs to sand pear system and large fruit type pear.

The tree is strong and semi-open, which is easy to form short fruit branches and axillary flower buds, with 7-9 flowers per inflorescence. The leaf is oval, the leaf margin is serrated, and the leaf blade is dark green. Annual branches are yellowish brown, lenticels are large and dense, branches are stout, and the thickness of annual branches can reach 1-2 cm.

The fruit is flat and round, with an average weight of 530g and a maximum weight of 1000 g. The fruit spots are small and dense. The pericarp is thin, the pulp is milky white, the stone cell is few, the fruit juice is much. The soluble solids can reach 16%, and the edible rate is 95%. The pericarp is dark brown and becomes light brownish yellow after bagging. The flowering period is mid-April and the fruit ripening period is late September and early October, which is about 15 days earlier than that in South Korea.

The fruit setting rate is high, high yield, stable yield, strong resistance to scab and black spot. If harvested too late and stored for a long time, core browning is easy to occur. Fruits that need long-term storage should be picked early. If too much fruit is easy to cause premature senescence, fruit thinning should be strengthened, and irrigation and drainage should be done during cultivation.

The young trees blossom in the second year and bear fruit in the third year. The average yield per mu in Beijing is generally controlled at 2000-2500 kg.

The fruit should be refrigerated after harvest.

III. Key points of cultivation techniques

The main results are as follows: 1. the plant growth potential is strong, pay attention to reasonable close planting, 45 plants per mu.

2. There is a lot of pollen and strong affinity with other varieties, so Huashan and Huashan can not be pollinated trees each other.

3. In the first year of planting, apply sufficient base fertilizer, ensure adequate supply of fertilizer and water in the first two years, and promote the formation of tree crown as soon as possible; after the result, it is necessary to strengthen fertilizer and water management, especially when the amount of organic fertilizer reaches 5-10 cubic meters.

4. The open-heart cultivation technique of net frame can be adopted to pull branches in time and improve the condition of ventilation and light transmission.

5. The high grafted tree can pull branches and strengthen the tree in time in the first year, and the flower bud can be formed in the second year.

6. nitrogen fertilizer should be added in time after fruit harvest, and foliar fertilizer spraying and root application should be combined.

7. After bagging the fruit, observe and pay attention to the control of yellow powder insect, pear planthopper and other bagging pests.

IV. Areas suitable for planting

It is suitable for planting in Beijing area.