Technical requirements

The trunk of the large flower is straight, grows quickly, the tree is neat and beautiful, the leaves are dense, and the crown is round. In late autumn, the purple-red old leaves are mixed in the green leaves, which is very beautiful. The fruit has a sweet and sour taste, can be eaten raw and brewed, and the seeds can also be squeezed into oil.

First, the actual collection and processing

It takes 15 years to bloom and bear fruit. The maturity period is from late October to mid-November. During this period, collection should be carried out quickly. Fruits collected too late are easily eaten by animals and cannot be collected.

The harvested fruit should be piled for 3 to 5 days, and treated after the peel softens. The fruit is mixed with sand to remove the flesh, and the seeds are washed with water to dry, and the seeds and sand are mixed evenly at a ratio of 1: 3, and stored in layers. Seeds weigh about 800 grams per thousand grains, with a seed volume of 30 to 35 kg per acre.

2.Soil preparation

The nursery land should be selected in the sunny and well-drained sandy loam soil. Before planting, the field should be dug deep and disinfected with 3% table salt. The seedbed is 1.2 meters wide and 20 centimeters high. The bed surface should be meticulous and flat. Stones and weeds should be removed. Side trenches and walkways should be straight.

Sowing in early March, sowing can be on-demand or seeding. The row spacing for on-demand planting is 10 × 25 cm, the row spacing for seeding is 30 cm, and the sowing depth is 8 to 10 cm. Put the rotten cake fertilizer at the bottom of the ditch, and then place a layer of 5 cm thick loess to cover the base fertilizer before planting. After sowing, cover the seeds with a layer of 2 cm thick loess, which will help reduce weeds between seedlings and promote root growth of seedlings. The germination rate of the seeds of Sorbus grandiflorum is relatively high, generally above 80%. Sprouts and unearthed about 40 days after sowing. When 30% of the seedlings are unearthed, the straw should be opened in time.

Field management

The giant calyx grows rapidly, has strong adaptability, and is easier to manage at seedling stage. After the seedlings are unearthed, weeds in the seedlings should be removed in time. After weeding, 0.1% urea can be applied to facilitate the growth of the seedlings.

From May to June, fertilize the soil every 10 days or so. The fertilizer is mainly nitrogen. From July to August, phosphorus and potassium fertilizers should be added to the fertilizer water, and nitrogen fertilizer should be applied less. At this time, the fertilizer water concentration should be increased moderately. In case of long sunny weather or high temperature soil drying, field irrigation should be carried out in the morning and evening to reduce soil temperature and ensure normal growth of seedlings. After entering September, stop fertilizing to prevent seedlings from growing wild and affecting the lignification of seedlings. In addition, before each fertilization, weeds in the garden should be removed to reduce weed consumption of soil nutrients.

4. Seedling transplantation

The seedlings of Sorbus grandiflorum grow faster. The average annual height of seedlings is 80 cm, which can reach more than 1 meter, the average ground diameter is 0.6 cm, and the thickness is 1 cm. Annual seedlings can be transplanted out of the nursery or used for afforestation. Due to the main roots of Sorbus grandiflorum, fewer lateral and fibrous roots, transplanting of seedlings should be carried out in February to March before the seedlings germinate in spring. In order to improve the survival rate of the transplanted seedlings, most of the side branches and leaves should be cut off during transplanting. To cultivate large seedlings, planting can be performed according to the row spacing of 30 × 50 cm (* year) and 60 × 100 cm (second year).

The above are the technical requirements for the cultivation of Sorbus grandiflora, which I hope will help you.

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