Seedling raising technique of Rhizoma Polygonatum seed

The heavy building is also known as seven leaves and a flower, flea, Chixiu, Chongtai root, etc., the market demand is very big, has the very high planting prospect, the propagation method generally has the seed propagation and the rhizome propagation two kinds of methods, the seed propagation is a kind of breeding quantity is big, the seedling raising cost is low, but the technical content is high, the seedling raising time is long, let's take a look at the seed breeding technology of Zhonglou.

Budding treatment

Remove the shell after picking the mature seeds with a weight of 40-70 grams, remove the shell, put the seeds into a net bag, according to the proportion of sand at 5:1, store one layer of sand and one layer of seeds in a room at a temperature of 20 ℃ for germination treatment, and sow when the seeds grow new roots (April-May). The number of seed storage layers is less than 5 layers, which should be thin and not thick, and should not only be loose and breathable, but also have the ability of water retention. Always keep moist, but do not accumulate water.

Seeding in seedbed

Sow 250 seeds per square meter on the greenhouse seedling bed, sow 8-8.5 kg per mu, cover soil 1-1.5 cm after sowing, and begin to emerge from May to June after sowing. Generally, the emergence rate of the same year can reach more than 60%. Before sowing, the greenhouse seedling bed should be treated with weeding, disinfection, sterilization and insecticidal treatment, the soil of the seedling bed should be loose and fertile, and the thickness of the soil layer on the soil surface is 20-30 cm.

Seedbed management

The resistance of the seedlings growing in the same year is weak, and the management of water, temperature and diseases, insect pests and weeds must be strengthened. The soil of the seedling bed should be kept moist for a long time. The relative humidity of the air in the shed is 50-80%, the temperature is below 30 ℃, and the shading degree of the seedling bed is about 50%. It is necessary to monitor the occurrence of diseases and insect pests from time to time, remove soil moisture weeds in time, and apply fertilizer appropriately according to the seedling condition the next year.

Transplanting and false planting

From June to July of the following year, large seedlings with strong growth can be planted on the open field seedling bed according to the row spacing of 10 cm × 10 cm. After survival, they can be planted in the field in the coming year.