Shanxi famous jujube: Junzao
The botanical characteristics of the tree crown are mostly round head-shaped, semi-open, dry, strong and tall. The trunk is grayish brown, the skin is longitudinally cracked, the crack is shallow, and it is easy to peel off. The head branch of jujube is brown-red, with an annual growth of 34ml cm. Internode microcurvature, lenticels protruding, medium to large, gray-white. Jujube stock hypertrophy, black-gray, long conical. Usually draw raw jujube to hang 5, hang 12-21 cm long, bear fruit more parts of 6-l0 node. The number of flowers is medium-dense, each inflorescence has 1-7 single flowers. Jujube hanging has 14 leaves. The leaves are large and thick, ovoid, 4.2ml 6.5 cm long, 2.1mi 3.2 cm wide, apex acute, margin obtuse teeth, base rounded, dark green, petiole 0.20.6 cm long.
The biological characteristics of 30-year-old plants are 0.9 meters in height, 0.75 meters in circumference, 9 meters in height and 7.5 meters in branch extension. The jujube head has strong sprouting power and strong knot strength in that year. Enter the fruiting period early, generally 2-3 years after planting, a large number of results, high and stable yield, long life in the full fruit period. The yield of fresh jujube per 30-year-old plant is 45ml and 70kg. In the producing area of Jiaocheng, it germinated in mid-April, flowered in late May, reached full bloom in mid-June, matured fruit in mid-late September and deciduous leaves in mid-October.
Economic characters large fruit, cylindrical or Obovate, there are "eight a foot, ten a jin" said. The vertical diameter is 4.2 cm, the horizontal diameter is 3.1-3.6 cm, and the size is irregular. The average weight of a single fruit is 22 grams, the maximum weight of a single fruit is 31.5 grams, the fruit surface is smooth, the skin is thin, crimson, and the fruit spot is large and significant. The stem depression is shallow and wide, and the fruit top is slightly concave. The meat is thick, green and white, dense and crisp, sweet, juicy, fresh jujube contains 28.7% sugar, 0.45% acid, and vitamin C contains 430.2 mg per 100 grams of pulp. Dried jujube contains 71.6% sugar and 1.58% acid. The nucleus is large, fusiform, with a longitudinal diameter of 2.3 Mel 3.5 cm and a horizontal diameter of 0.57 Mel 1.2 cm, with an average weight of 0.75 g, and the edible part accounts for 96.5% of the fruit weight. The nuclear surface is rough, the furrow is deep, the apex is long acuminate, the base is long and slightly obtuse, most of them are seedless, and the small fruit is seedless. The drying rate is 40% and 60%. The fruit is of high quality and is one of the four famous dates in Shanxi. Disadvantages: the fruit is easy to crack in case of rain in the mature period.
The key points for cultivation are strong trees, tall trees, fast growth, early fruit, and strong resistance to drought, cold, salt, diseases and insect pests. It is suitable for cultivation in Pingchuan, dry land, edge mountains and hills, beaches and mountainous areas.
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Key points of cultivation and Management of Dabian Apricot
1. Before planting, soak the roots of seedlings in water for 24 hours, take them out and dip them in water-retaining agent, and then plant them. After planting, it is filled with water, and when the water seeps, it is set to dry at 80cm to 100cm. The planting hole takes the trunk as the center, covering 1 meter × 1 meter plastic film, the surrounding of the film is compacted with soil, and the surrounding of the planting pit is slightly higher. Through years of practice, it has been proved that plastic film mulching after planting can not only retain water, but also increase the ground temperature, make the tree germinate early and grow fast. One week after planting, the trunk was covered with a plastic bag, which was 40 cm long and 10 cm wide. In order to prevent
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Specific techniques for flower and fruit thinning of pears
1. Most of the cells of flowering, fruit setting and young fruit during sulfur blossom and fruit thinning period are mainly determined by storage nutrition, sparse the excess flowers and fruits as far as possible, reduce the consumption of large stomach, and concentrate all the nutrients on the flowers and fruits that should be left in order to grow into big fruit. Therefore, from this point of view, early vulcanization boat thinning is better, bud thinning is better than flower thinning, flower thinning is better than fruit thinning. However, it depends on the number of flowers, flowering weather, tree strength, fruit setting, and so on, before deciding whether to thinning buds, flowers, fruit, or a combination of the three. Pear orchards with large amount of flowers (big year), good weather and heavy workload can
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