Semi-lignified softwood cuttings of Metasequoia glyptostroboides?
The seedling raising technique of semi-lignified softwood cuttings of Metasequoia glyptostroboides is: semi-lignified cuttings can also be used to raise seedlings in autumn, because at this time the branches have high maturity, winter buds have been formed, and there are no more branches in the same year after cutting. And only finish taking root. At the same time, with the further development of winter buds, the stem of seedlings will be more substantial, and an independent seedling transplanting culture can be formed when sprouting in spring. Autumn semi-woody branch cutting, intensive management time is short, unit area can be dense more cutting, the yield is very high, so it is very popular. During autumn sowing, 14 to 18 cm semi-lignified twigs were cut from mid-August to early September, and the cuttings were treated with 50 mg NAA per kg for 5-6 hours, or dipped in 300-500 mg NAA per kg for 3-5 seconds. The cutting density is 3 to 4 cm between plants and 7 to 8 cm between rows, with 320 to 480 plants per square meter. In order to take root well, sand or industrial slag with good permeability should be inserted into the soil. It can take root 25 to 40 days after insertion. It should be properly covered against cold in winter and transplanted and cultured when sprouting in the next spring. When the plant has a row spacing of 70 to 100 cm and has been cultivated for 2 years, when the seedling is more than 1.5 meters high, it can be planted out of the nursery.
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Technology of sowing and raising seedlings of Metasequoia glyptostroboides?
The techniques of sowing and raising seedlings of Metasequoia glyptostroboides are as follows: first, seed collection: Metasequoia glyptostroboides blossoms in the early and middle of March, and cone formation period from mid-October to early November of that year. Seeds can be collected when the fruit scales change from green to yellowish brown, fissured, and a small number of seeds protrude. After the cones are harvested, the cones are spread out or slightly exposed to the sun, the scales are opened, and the seeds can be removed. Second, seed treatment: soak the seeds in cold water for 3 to 5 hours before sowing, so that the seeds can fully absorb water and expand, so as to facilitate germination and ensure neat seedling emergence. Third, sowing: from late March to April
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Metasequoia glyptostroboides
Metasequoia glyptostroboidesGoldRush' is a cultivated variety of Metasequoia glyptostroboides developed in recent years. Deciduous trees, fast-growing, sexually strong, reddish-brown bark; leaves flat, linear, opposite in 2 rows on short branches; new leaves are golden in spring, summer and autumn of the year. Metasequoia glyptostroboides are mostly introduced from Japan, which have strict requirements for microclimate, high requirements for air humidity, and like water and wet climate. At present, in Beijing, Jiangsu, Shanghai and Zhejiang
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