Cultivation techniques of Nanmu

Golden nanmu is a precious wood unique to China, with unique aroma, straight texture and fine structure, not easy to deform and crack, so it is an excellent wood for architecture, high-grade furniture and so on. So what are the cultivation techniques of golden nanmu?

The seed ripening period of Cunninghamia lanceolata is around Lesser Snow's solar terms, and it matures when the pericarp changes from cyan to blue-black. The fruits collected should be dealt with in time, and the method of treatment is to tamp the fruits in baskets or buckets, remove the peel, rinse them with clean water, dry them indoors, avoid exposure, and store them after the water marks are slightly dry. The 1000-seed weight of this tree species is 20,345 grams, and the germination rate of the nursery can reach 80% 95%. The water content of the seed is about 30%, which is easy to lose water and crack, resulting in moldy cotyledons and loss of germination ability. therefore, the treated seeds must be stored with moist river sand immediately. The Beginning of Spring began to sprout a large number of seeds before and after the solar terms, and the seeds can be sown at this time.

Golden nanmu seedlings and golden nanmu seedlings grow slowly and like shade and damp at the initial stage, so it is appropriate to choose fertile and moist soil with short sunshine time, convenient drainage and irrigation as nursery. Heavy clay soil, poor drainage, easy to rot roots; dry soil, the lack of water, the seedling growth is poor, but also easy to cause burns. Before sowing, the nursery should be fully fertilized, and the bed should be built carefully. Generally, the strip sowing method is used to sow seeds, with a spacing of 15 cm, a width of 6 cm and a sowing amount of 20 kg per 667 square meters (1 mu). Cover 1cm of fine yellow soil after sowing, then cover with grass to keep the seedbed moist. After the seedlings are unearthed, weeding, soil loosening, fertilization and irrigation should be carried out in time. In raising seedlings on flat land, due to long sunshine time and high surface temperature, it is easy to be damaged by sunburn in summer, so corn can be sown sparsely in early May to give proper shade. The fast-growing period is from August to October. During this period, the management of water and fertilizer in the nursery should be strengthened to accelerate the growth of seedlings and improve the quality of seedlings. There are still some plants growing in November, so in the late management of the nursery, attention should be paid to avoid freezing damage of seedlings during overwintering. The afforestation effect of 1-year-old strong seedlings is better than that of 2-year-old seedlings. Some seedlings with weak growth can be kept in the nursery for one year for reforestation.

As for afforestation, afforestation should be carried out in the middle of November and from February to April in spring. The afforestation site should choose the middle and lower part of the semi-shady hillside, both sides of the valley or riverside platform with deep soil layer, high humus content and high air humidity. The size of planting hole is 40 cm × 40 cm × 40 cm, 200 grams of compound fertilizer is applied in each hole, and the fertilizer is mixed well when backfilling topsoil. Choose overcast or light rainy days for afforestation, prune the seedlings properly before planting, and cut off the overlong or damaged roots. In order to keep the root system moist, it should be beaten with the seedlings, and 3% or 5% calcium magnesium phosphate fertilizer should be added to the mud. Planting so that the roots of the seedlings are extended, the seedlings are straight and the depth is moderate.

The woodiness of golden nanmu is stable. Pleasant aroma, has become a unique valuable wood, or popular handstring material, is more expensive.