How much is a Torreya grandis seedling? What are the related planting techniques?

Torreya grandis is a relatively rare plant, alias Chinese torreya grandis, commonly known as concubine tree. Torreya grandis has high requirements for growth environment, and the producing area is very limited. The ideal afforestation land of Torreya grandis requires mountains and hills with cool, humid air, low light and good drainage. Ventilation conditions, elevation and even slope all have a very important impact on the growth of Torreya grandis, so it is difficult for farmers to plant. How much is a Torreya grandis seedling? What are the related planting techniques?

How much is a Torreya grandis seedling?

The price of one-year-old Torreya grandis seedlings is between 6 and 18 yuan; the price of three-year-old seedlings grafted to two-year-old trees is between 78 and 98 yuan; and the price of seedlings that have been able to hang fruit for seven or eight years has reached about 2500 yuan. If the development continues according to this market, the price of the torreya tree, which has grown for nearly a decade, is estimated to be tens of thousands.

II. Planting techniques of Torreya grandis

1. Planting time and soil requirements

The best planting time of Torreya grandis is from late October to early December, followed by afforestation in spring, and from late February to mid-March. It is best to choose wet weather and avoid high temperature, strong wind and dry weather. The planting soil is required to be deep, fertile, loose and well drained. Generally, clay loam and sandy loam are suitable for planting Torreya grandis, but acid red loam below pH 5 is not suitable for planting Torreya grandis.

2.. Deep digging and shallow planting

(1) Deep digging: the root system of Torreya grandis is deep and broad. When planting, it is necessary to dig a planting hole with a depth of 60cm / 80cm and a depth of 30cm / 50cm, so as to loosen the soil and help the root system to deeply tie and absorb nutrients.

(2) shallow species: in order to ensure the survival rate, it is necessary to plant along with the seedlings. After the grafted seedlings are put into the pit, they begin to cover the soil, and the seedlings must be upright when covering the soil, otherwise it will affect the growth. When planting, the root system should be planted shallowly, and the root system should be covered with topsoil. the planting depth should be flush with the root neck of the seedling and the mouth of the hole, and then covered with 3-5 cm thick soil and pushed into the shape of steamed bread.

3. Lift it lightly and step on it

When planting Chinese torreya seedlings, in order to stretch the roots of the seedlings, gently step on the soil while burying the soil, and gently lift the seedlings when the hole buries 70% of the soil, so that the roots stretch naturally in the soil. Then, add soil and gently step on the soil, watering the right amount to improve the survival rate.

4. Weeding and loosening the soil

Weeding and loosening the soil should be carried out in time after the end of the rainy season every year, and the cut weeds should be buried or covered in the rhizosphere, which can play the dual role of shading and fertilizer. Young forest loosening soil can be carried out in combination with fertilization, expanding holes 30cm to 40cm a year. In the growing season, the loose soil should be shallow, with a depth of no more than 10 cm; the loose soil can be deepened appropriately in winter; the loose soil should be shallow inside the crown and deepened outside the crown.

5. Shaping

Generally speaking, the tree should be pruned and pruned at a height of about 1.5 meters, and 3 or 4 backbone branches should be cultivated. For the seedlings with partial crown, the way of flat pull and slow release can be adopted to balance the growth of the backbone branches and increase their opening angle to ease the growth potential; for the seedlings with fewer branches, the top of the main shoot can be used to promote the branches. as a result, a relatively standard natural shape of multi-main branches or happy tree shape was formed earlier, which laid the foundation for high yield and high yield.

6. adequate manuring

The mature period of Torreya grandis needs to be fertilized 2 or 3 times a year. Spring fertilizer was applied from March to April to promote the development of new shoots and female flowers, while autumn fertilizer was applied after fruit harvest in mid-late September, with chemical fertilizer and organic fertilizer to facilitate the recovery of tree potential. In high-yielding years, one more summer fertilizer can be applied from July to August, mainly phosphorus and potassium fertilizer, in order to promote the seed development of Torreya grandis.