Taxus cuspidata, also known as yew, endangered species, and a national first-class protected plant, has become a recognized plant gold because of its great anti-cancer and anti-cancer functions and strong ornamental value. Since December 2002, following the ban on the commercial use of wild yew, the cultivation of yew has become the only way for the sustainable development of the paclitaxel industry, and it is also an important measure to effectively protect wild resources, and has broad prospects.
According to 9 years of experience, the author wrote this article for readers' reference. Errors in the text are unavoidable. Please kindly enlighten your colleagues and experts.
1, growth habits
Taxus cuspidata has the characteristics of resistance to cold, hi yin, hi wet, hi fat, fear of drought, flooding, high temperature, and a wide range of soil adaptation. The dormancy period is able to tolerate a low temperature of -42°C without freezing injury. It is buried in heavy snow and does not fall off. The temperature in summer exceeds 30°C and the growth slows down. As the temperature continues to rise, the growth stops.
Taxus cuspidata grows slowly. The plant height is about 2m in 14 years, and the average diameter of trunk diameter is 0.2cm. Under better cultivation conditions, 2-year-old cuttings were planted for 5 years and the plants were as high as 1 m or more.
Taxus cuspidata is a dioecious plant, red-leafed green leaves, evergreen, green and green in the growing season, dark green during dormancy. On the north side of the Great Wall, two-year-old cuttings and seedlings were planted for 4 years to see flowers and fruits. The flowering period was as large as early April to late April, and the fruit ripening period was from mid-August to early September.
2, cultivation techniques
2.1 Woodland selection and land preparation: Select a loam that is close to the water source, has flat terrain, good drainage, and fertile soil. The plantation land was deeply turned and flattened to make a 133cm wide cymbal.
2.2 Planting Density: Different uses have different densities. The production of bonsai should be closely planted, with 4,000 acres planted and spaced 33cmX50cm apart. The production of afforestation engineering seedlings and medicinal forests should be sparsely planted, with 2000 acres per plant, with a row spacing of 50cmX66.7cm. After five years of colonization, one trip to another, sale or transplanting. There are 1000 strains per acre and the row spacing becomes 50cmXl33cm. In order to cultivate large-scale engineering seedlings, one strain can be removed one at a time.
2.3 Transplanting Seedlings: Select 2 years old cuttings for transplanting. Seedlings are first wetted, seedlings are used to plan the seedlings, soils are removed from the seedlings, and the integrity of the root system is maintained to ensure a high survival rate. In seedling transplanting pots, fill the roots with water.
3, tending management
3.1 Weeding and weeding 3-4 times.
3.2 Topdressing urea in May, 10kg per mu, top-dressing and watering. In the autumn, it is best to apply fertilizer and sheep manure, apply it once in 2-3 years, and apply 1.5 tons of Mushi.
3.3 In the spring and autumn, when it was dry, it was watered. Remember: Do hard work gardeners, "sweat water pouring" (more watering times, excessive water is the main reason for the failure of potted yew).
3.4 shading: available shade 70% shading net shading can also be fruit intercropping, both in the fruit trees planted northeast yew, fruit trees to east-west cultivation. Can also intercropping food and medicine, such as planting a row of corn, planting 2-3 rows of Northeast yew, requiring corn is a tall plant varieties, such as Agricultural University 3138, densely planted from east to west. In the residential area between the building and the green belt cultivation and a small amount of cultivation after the farmers room without shading.
3.5 The yew sticks are soft and soft, and they do not rebound after they are picked. They are suitable for styling. They can be trimmed properly and made into various shapes to cultivate bonsai.
After 9 years cultivation of Taxus cuspidata, no diseases or insect pests occurred.
Bermudagrass as perennial herbaceous plants, with rhizomes and stolon, fibrous root thin and tenacity.Stolons tile ground or buried in the grave, 10 ~ 110 cm long, smooth, hard day take root downward, and plant height of 10 ~ 30 cm.Leaf flat, lanceolate, 3.8 ~ 8 cm long, 1 ~ 3 mm wide, front-end acuminate, margin serrulate, leaf color thick.Spica 3 ~ 6 pieces are arranged finger in stem tip, and arranged spikelets in cob side, sometimes slightly purple.Seeds 1.5 mm long, ovoid, mature falls off easily, but since the broadcast.Bermudagrass xi warm humid climate, negative resistance and cold resistance is poorer, growth temperature is 20 ~ 32 ℃, almost stopped growing in 6 ~ 9 ℃, xi drainage good fertile soil.Bermudagrass trampling resistance, strong ability to occupy.This lawn in south China green stage for 270 d, north China, central China to around 240 d.Bermudagrass breeding ability is strong, but not easy to harvest, the seed by using points rootstock breeding.
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