Qingxiang Walnut, a Walnut Variety with good quality

The main value of fragrant walnut is that its fruit is edible and tastes good. However, in order to ensure its fruit setting rate and fruit quality, it is necessary to master some necessary cultivation techniques.

I. planting techniques of fragrant walnut trees

Sowing: harvest seeds after ripening from August to September, peeling, drying, and dry storage. In the middle of March, soak the seeds in cold water for 2-3 days, fish them out, mix them with wet sand, and pile them in the sun. High 30-35cm, covered with l0cm thick wet sand, sprinkled once a day to keep moist, covered with grass curtain or film moisturizing and heat preservation at night, 10-15 days fruit shell cracking, white can be sown. Select once a day, sow in batches and sow in sufficient moisture when sowing. First, the ditch was opened according to the row spacing of 40-50cm, and the plant spacing was 15-20cm. The two sutures were parallel to the ground when sowing, and the suitable depth was 3-5cm from the fruit to the surface. After covering the soil, the soil moisture was preserved by compaction, the sowing amount was about 100kg/ mu, and the seedling yield was 7000-8000 plants / mu.

Management: the planting time is before and after sprouting in late March, the survival rate of 1-2-year-old seedlings is high, water should be watered thoroughly after planting, water and fertilizer management should be strengthened, soil should be loosened and weeds often removed, drainage should be paid attention to in rainy season, and attention should be paid to the prevention and control of diseases and insect pests from June to July. Pruning should be carried out during the growing period, and the dry height should be kept above 3m. Do not prune after falling leaves, otherwise it is easy to cause bleeding and affect the growth of trees.

2. Pruning methods of fragrant walnut young trees

1. Slow release of long branches, carving buds to promote branches: strong and vigorous long branches of fragrant walnut have strong sprouting power, and more than 80% of the medium and short branches will form top flower buds. The application effect of the bud carving technology on the apple tree is also very good on the walnut tree. when the top bud begins to sprout, it can obviously improve the germination rate of the branch without cutting and releasing the strong growing long branch and carving the buds on both sides and on the back. it has obvious effect on increasing the number of branches and flowers in the early stage. Carve it with a hacksaw or knife about one centimeter above the bud, and the bud will grow branches. Sprouting requires that the saw blade should not exceed half a week of the branch, and the bark should be cut off, but the xylem should not be damaged. The branch will be broken if it is engraved too deep in the strong wind. Generally, you can carve a bud every 3-5 leaves.

2. Short cutting to promote branches: in the south, it can be cut short in the growing season, which can increase the number of branches in the early stage. the best time for short cutting is at the end of May and the first ten days of June. the vegetative branches with exuberant growth around them are selected and the length of the branches is cut off. In general, 2-4 branches can germinate, and only 1-2 branches can germinate if they are too light or too heavy. Short-cut early branch is less, short-cut too late, the new strip growth is not substantial is not conducive to flower formation.

Third, questions and answers on the cultivation of fragrant walnut

1. Where does the fragrance come from?

Fragrant walnut was selected from the late bearing walnut population by Japanese walnut breeding expert Naoki Shimizu. It was named in 1948 and is one of the best walnut varieties.

two。 What are the excellent characteristics of fragrant walnut?

1. The fruit is early and the yield is high. The results of the second year after planting, five to six years into the high-yield period, 600 to 800 jin of dried walnut per mu; 2, beautiful appearance and excellent quality. The nut of this variety is large, uniform in size, about 16 grams per fruit, conical, thin and moderate shell, full kernel, light yellow kernel, sweet flavor, little astringency, and kernel rate of 53-55%. 3. Resistant to rinsing and easy to store. Nuts have tight sutures and are resistant to rinsing. Antioxidant rancidity (kernels turn sour), resistant to storage. Nuts will not change their taste after stored at room temperature for one year. 4. Long life and disease resistance. Fragrant walnut is extremely resistant to anthracnose, brown spot, branch blight, strong growth, not easy to premature senescence, economic life of more than a hundred years. The comprehensive character of nut is comparable to that of American diamond walnut. It can be said that this variety is the first choice for the development of walnut production.

Generally speaking, fragrant walnut still has high breeding value, it can not only be used for ornamental, but also provide fruit for people to eat, it is a kind of tree species that can produce considerable economic benefits.