How much is the price of golden nanmu seedlings?

Cunninghamia lanceolata, a rare and endangered species endemic to China, is a rare and endangered species under secondary protection in China. Nanmu is mainly distributed in subtropical areas such as Sichuan, Guizhou, Hubei, Hunan, Guangdong and Hainan, while Nanmu is mainly produced in Sichuan and Guizhou, of which Sichuan is the best. So what is the price of nanmu seedlings and the technical measures to cultivate them?

Golden nanmu is naturally fond of warm and humid environment, heat-resistant and cold-resistant, its material has the characteristics of moisture-proof, corrosion resistance, non-deformation, mild fragrance, warm in winter and cool in summer, shining golden light in light and so on. It is a rare and excellent economic tree species integrating biodiesel, medicinal, spices and important wood. Gaozhou City, located in the west of Guangdong Province, belongs to the northern edge of the tropics, and its warm and humid climate adapts to the growth of nanmu.

The price of nanmu seedlings

According to the local seedling raising experience and cost accounting, although the 1000-grain weight is large, the budding rate is very good, and the price of golden nanmu seedlings will not be too high. Generally one-year-old bare-root seedlings, the price is about 2 yuan is very reasonable, container seedlings are slightly expensive, large sizes will be more expensive, but do not advocate the purchase of large seedlings cultivation.

Technical measures for cultivating seedlings of Nanmu

1. Timely harvest of seeds

The seed ripening period of Cunninghamia lanceolata is before and after "Lesser Snow", and the pericarp changes from green to blue-black. At present, there is no seed harvest of Nanmu in Gaozhou City, and its seed sources are purchased from Guangdong Forestry Seedling Station or other provinces. Because the oil content and water content of the seeds are relatively high, and once the moisture is less than 30%, there will be seed cracking and cotyledon mildew, which will directly affect the germination rate of the seeds. Therefore, when choosing and purchasing seeds, we must pay attention to their freshness.

2. Seed treatment

The seeds should be disposed of in time after purchase. Because the seed oil content and water content are relatively high, and the seed cracking and cotyledon mildew will occur when the moisture content is less than 30%, therefore, the purchased seeds must be stored with moist river sand immediately. During the storage period, we must pay attention to grasp the humidity of the river sand, that is, hold on to the sand mass with your hands, so that you can not squeeze out the water hard, and the sand mass should not disperse immediately after releasing the hand. It can be sown when the seeds begin to germinate before and after the Beginning of Spring. Because of its high oil quality, the seeds should not be preserved for more than 3 months, otherwise the germination rate of seeds will be reduced.

3. Seeds should be carefully germinated.

The seeds of Cunninghamia lanceolata should be raised in the bud bed to facilitate management and improve the germination rate. The sprouting nursery bed should remove weeds and debris, make the bed flat and have a width of 1m, and cover the river sand with 20cm thickness. Soak the seeds in warm water for about 40 years and add trichlorfon pesticides for 6 hours before sowing, then remove the shrunken seeds and other sundries floating on them, and then soak the seeds with "carbendazim" or other fungicides for 30min sterilization treatment, and the seedbed should also be sterilized with 0.5% potassium permanganate solution. After sowing, the seeds should be covered with clean river sand about 1~2em thick, drenched with sprinkles, and then covered with film to keep the water warm. During this period, we should not only maintain the moisture of the border, but also do not turn too early.

4. Seedling management

When the seeds grow in the germination bed for about 30 days, they will germinate one after another. At this time, the film can be opened. Fungicides and foliar fertilizer (potassium dihydrogen phosphate) are sprayed every 10 days. Fungicides should be used alternately. Wait for the seedlings to grow; 1 when 2 true leaves and stems turn to semi-Lignification, they should be transplanted to the nutrition cup as soon as possible. This period is the key to the survival rate of seedlings after transplantation.

5. seedling raising in nutrition cup should be strictly managed.

In seedling raising, the nutrient soil preparation of the nutrition cup should be 60% red loam soil, 39% organic humus soil, river sand and 1% superphosphate. The nutrition cup should be placed in a shade with a shade of 50% to 75%. The weak seedlings should be removed when the seedlings are moved, and the roots of the seedlings should not be damaged when they are raised. At the same time, the roots of the yellow mud mixed with carbendazim should be used. After planting, the root water should be drenched in time, and the bamboo bow should be supported on the seedling bed and covered with transparent film to keep warm and moisturizing, so as to improve the survival rate of transplantation. After the seedling is rooted, it can be drenched with 0.2% compound fertilizer every 10 days, and appropriate amount of water should be drenched after fertilizer, so as not to burn the leaves and stems of the seedlings. The best time to get fat is in the evening.