How much is a spruce sapling? How many trees can be planted per mu? What are the planting techniques?

Spruce seedlings are spruce seedlings, drought resistance is strong, is the preferred species of landscaping. So how much does it cost? How many trees can be planted per mu? What are the planting techniques? It is known from the nursery stock base in Hebei that the prices of seedlings of different specifications are different, for example, 1.5 meters spruce cup seedlings, 16*16 cups 21 yuan/plant;21*21 cups 26 yuan/plant;30*30 cups 40 yuan/plant.

How many spruce seedlings can be planted per mu?

The afforestation density of spruce should vary with different site conditions. In low mountain areas, considering the development and branching characteristics of spruce trees and water conditions, the afforestation density should be larger, generally the row spacing is 1.2~1.5m, the plant spacing is 0.75~ 1m, and 450~700 plants per mu. The site conditions of cutting site are better, the row spacing is 1.5~ 2m, the plant spacing can reach 1~1.5m, and more than 300 plants per mu should be maintained.

What are the spruce sapling planting techniques?

Spruce trees have strong shade tolerance and can tolerate insufficient light for up to 25 years under the canopy. Natural regeneration was good under lateral light and shade conditions, but it was poor under dense canopy. The climate requirements are not strict, and they are mostly distributed in alpine areas or high latitude areas with an annual average of 4~12℃, annual precipitation of 400~900 mm and annual relative humidity of more than 60%. Cold resistance is strong, can endure the low temperature below-30℃, but the shoot frost resistance is poor. In mild and humid climates, it grows very well in acidic to slightly acidic brown forest soils or brownish brown soils. The forest reserves in Sichuan and Xinjiang exceed 1000 cubic meters per hectare, and those in Xizang exceed 2000 cubic meters. Spruce is a polyphyletic shallow-rooted tree species, its taproot is not obvious, its lateral roots are developed, and more than 3/4 of its roots are concentrated in the surface layer.

Management after planting:

1. Shade

Spruce schrenkiana is a shade tolerant tree species, especially in the seedling stage, which needs certain shade conditions. Therefore, the method of setting up shade is adopted. After all the spruce seedlings come out, the bamboo curtain can be rolled up from 6 pm to 9 am every day. On August 30, all bamboo curtains were removed to promote seedling growth and lignification.

2. Weeding

In order to reduce evaporation of soil moisture, loosen topsoil and increase soil permeability, there should be no weeds in the seedbed.

3. Pest control

When seedlings emerge in large numbers, 1% carbendazim and thiophanate-methyl can be sprayed at a dose of 60 kg per 667 square meters. After that, spray once every 7 - 8 days, a total of 4 times.

4. Irrigation

According to the weather and soil conditions, sprinkle water with a watering can at the right time to keep it moist.

5, winter

Spruce seedlings are young, lignification is low, cold resistance is weak, easy to suffer from freezing injury, especially in early spring freezing injury and physiological drought, often resulting in a large number of seedlings death, so effective measures should be taken before snow in winter to prepare for winter antifreeze work. Sift and disinfect sawdust and sheep dung into a 1:3 mixture (1 part sawdust and 3 parts sheep dung) before freezing. Cover seedlings evenly, preferably over the top of seedlings.