North American holly 2-3 meters high, shallow roots, main roots are not obvious, fibrous roots developed; leaves alternate, single leaf, long egg, hard-toothed edges, surface hairless, green, young leaves bronze, leaves slightly white back and hairy Dioecious, flowers white, with a leaf blade, female flowers 3-6 clusters, male flowers dozens of clusters; berries, red, 2-3 fruit clusters single fruit seeds 4-6.
North American holly germinated in late March in Hangzhou. The spring shoot grew in early April. The flower blooms in mid-May. The flowering period lasts for two weeks. The male flower opens 2-3 days earlier, and it ends at the same time as the female flower in early June. In early October, the fruit color turns red, and in mid-December, leaves fall; the fruiting period ends in March of the following year.
North American holly hi light, also resistant to half shade, hi fertile slightly acidic to neutral soil, weak alkaline soil can also adapt to hi warm and humid environment, moisture resistance, strong cold resistance.
North American holly has a wide range of uses in gardens. It can be used as a twig, a house pot, and a garden beautification.
Cutting branches and viewing and cultivation
North American holly twigs are bright and colorful, the vase period is up to 2 months, the application forms are various, and the ornamental value is high.
In the first year after planting, top dressing was applied 1-2 times in accordance with growth, and straw was covered to increase soil moisture and organic matter; before defoliation in winter, sufficient basal fertilizer was applied, and 50 g of each cake was used as fertilizer or other organic fertilizer; Do not prune, allow it to grow naturally; fall leaves, leaving the plant 10-15cm base shear.
In the spring of the following year, 5-8 growing branches were cultivated, timely dressing promoted uniform growth of shoots, and shoot lengths of more than 60 cm became the result of the third year. After falling leaves in winter, pruning short branches and curving branches are used. At this time, topdressing is mainly phosphorus and potassium fertilizers.
In the third year of May, these growing branches will bloom and the result will be fruit red in October and can be sold in batches in November.
Cutting branches will face problems such as less side branches, longer leaves, and thinner and smaller fruits. In southern China, due to high rainfall, symptoms such as fruit color will not appear, but they can be solved through technical means or improved cultivation facilities. .
Harvesting of holly twigs in North America requires a cycle of 2 years, ie, the same plant, cultivating vegetative shoots for one year, cultivating fruit sticks for one year, and cutting once for 2 years. When pruning, you can take a look at the vegetative branches of the current year and the other pods of the fruit of the year. You can also cut one block this year and cut it in another block next year. According to foreign introductions, one mu of land can be cut nearly 10,000 a year, an average of 4-5 thousand a year.
Year of potting and management
North American holly autumn and winter fruits are red, fruity, fruiting for a long time, full of festive, auspicious atmosphere, very suitable for home improvement.
Potted cultivation generally takes 3 years of pruning and cultivation to form. North American holly dwarf cultivars are generally selected, or dwarfed by growth control agents.
After planting, keep the plant base 15cm heavy shear, but need to ensure that at least 3 branches in the following spring; To control the height can be 5cm when the new shoots, spraying 500 times paclobutrazol 2 ~ 3 times, the results of the length of the branches in 20cm about.
In the second spring, paclobutrazol continued to spray and dwarf vegetative shoots. After winter leaves, the vegetative shoots were trimmed into a spherical shape of 20 to 25 cm.
In the third spring, the plants sprouted, bloomed, and the results were sold in the winter.
For the application of annual potted plants, the key technologies are pruning, dwarfing plant type, keeping flowers and fruits, and fruit enlargement.
Garden Application and Management
The holly tree in North America has a beautiful shape, strong cold resistance, and fewer pests and diseases. It is an excellent tree species for winter gardens and garden landscaping. After the winter, the leaves are full, full of bright red berries until the spring, very spectacular. Especially in the northern winter with a single hue, the bright red of North American holly brings spring-like surprise to the north.
Gardening applications of North American holly
As landscaping, it is mainly cultivated in the way of cultivation, and relatively low technical requirements. The main reason is that the northern climate must be watered with drought, water-retaining agents can be used, or straw can be used to keep the soil moist. On the contrary, in the south, there is more rain, and the surface of the fruit can easily grow pathogenic bacteria, affecting the smoothness and color of the surface. It can be sprayed after each rain. Fungicides are used to prevent disease from occurring.
Cabinet Vacuum Suction Unit
ETR has independently developed an integrated vacuum pump unit composed of a water-ring vacuum pump, a gas-water separator, a vacuum solenoid valve, pipe fittings and an electrical control system. It is a simple, safe and reliable device that continuously serves the wards all day long, without occupying the ward space. The negative pressure is sourced from the vacuum pump unit.
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