Afforestation method for choerospondias axillaris fruit-wood dual-purpose forest in stony desertification mountain land

Abstract

The invention discloses an afforestation method for choerospondias axillaris fruit and wood dual-purpose forests in rocky desertification mountainous regions, and belongs to the technical field of forestry afforestation, the afforestation method for choerospondias axillaris fruit and wood dual-purpose forests in rocky desertification mountainous regions provided by the invention gives consideration to both economic benefits and ecological benefits, and is suitable for large-scale planting in rocky desertification and other difficult sites. Through directional breeding of low-phosphorus-resistant fruit and wood choerospondias axillaris germplasm, choerospondias axillaris germplasm which can normally grow in rocky desertification and other difficult sites is screened out, and the afforestation survival rate and afforestation benefits are improved; the method has the advantages that male and female plants are reasonably configured, a pollination network is optimized in combination with terrains, the fruit setting rate is increased, the fruiting time of the female plants is advanced, the full bearing period is long, dwarfing pruning is performed on the choerospondias axillaris of a fruit purpose, fruit picking is facilitated, the fruit yield and quality can be effectively improved, and meanwhile, the material purpose of the male plants is also considered; by means of full-period tending technologies such as density control and pruning technologies, double high yield of wood and fruits is achieved.

Claims

1. A method for afforestation of Choerospondias axillaris fruit-wood dual-purpose forest in rocky desertification mountainous areas, characterized in that: It includes the following steps: Conduct a general survey in the suitable growing areas of Choerospondias axillaris according to the survey factors of fruit-using or wood-using Choerospondias axillaris, screen out the initially excellent trees for fruit-using or wood-using, and determine the phosphorus-efficient wood-using and fruit-using Choerospondias axillaris as the target excellent trees through phosphorus stress experiments; select the one-year-old branches of the said target excellent trees as scions for grafting of seedlings for afforestation; use the fish-scale pit land preparation method to complete the land preparation and soil improvement of rocky desertification mountainous areas from October to December of the previous year before afforestation; select the grafted one-year-old Choerospondias axillaris seedlings for afforestation, and finally conduct full-cycle tending management for the fruit-using target trees and wood-using target trees.

2. The method for afforestation of Choerospondias axillaris fruit-wood dual-purpose forest in rocky desertification mountainous areas according to claim 1, characterized in that: The survey factors of the fruit-using Choerospondias axillaris include the fruit size, pulp content, plant yield, tree height, diameter at breast height, crown width and presence or absence of diseases and pests of female Choerospondias axillaris; and / or, the survey factors of the wood-using Choerospondias axillaris include the tree height, diameter at breast height, tree shape and presence or absence of diseases and pests of male Choerospondias axillaris.

3. The method for afforestation of Choerospondias axillaris fruit-wood dual-purpose forest in rocky desertification mountainous areas according to claim 1, characterized in that: The seedlings for afforestation are grafted by the method of budding of selected Choerospondias axillaris families.

4. The method for afforestation of Choerospondias axillaris fruit-wood dual-purpose forest in rocky desertification mountainous areas according to claim 3, characterized in that: The rootstock for grafting the seedlings for afforestation is one-year-old Choerospondias axillaris seedlings grown from seeds.

5. The method for afforestation of Choerospondias axillaris fruit and timber dual-purpose forest in rocky desertification mountainous areas according to claim 1, characterized in that: The row spacing and plant spacing for afforestation are 4 - 6m, with 22 - 33 plants per mu; the plants are staggered in a "pin" shape for planting; for every 5 - 8 female plants, 1 male Choerospondias axillaris tree is planted, and the male plants are evenly distributed in the forest stand.

6. The method for afforestation of Choerospondias axillaris fruit-wood dual-purpose forest in rocky desertification mountainous areas according to claim 1, characterized in that: When conducting afforestation, backfill the surface soil and mix it evenly with the base fertilizer, plant the seedlings in the planting holes, cover with 3 - 5 cm thick soil, and evenly apply 20 - 30 g of water-retaining agent in the planting holes centered on the tree trunk and 5 - 10 cm away from the tree trunk.

7. The method for afforestation of Choerospondias axillaris fruit and timber dual-purpose forest in rocky desertification mountainous areas according to claim 1, characterized in that: The time for afforestation is on rainy days in February or March.

8. The method for afforestation of Choerospondias axillaris fruit and timber dual-purpose forest in rocky desertification mountainous areas according to claim 1, characterized in that: The full-cycle tending management includes soil moisture conservation and weeding, shaping the main trunk of the target trees, fertilization and pest control.

9. The method for afforestation of Choerospondias axillaris fruit and timber dual-purpose forest in rocky desertification mountainous areas according to claim 8, characterized in that: The soil moisture conservation and weeding is to cover the soil moisture conservation and weed suppression materials within a range with a radius of 0.5 - 0.8 m centered on the seedlings after planting.

10. The method for afforestation of Choerospondias axillaris fruit and timber dual-purpose forests in rocky desertification mountains according to claim 8, characterized in that: The fertilization includes applying 2.5 - 5.0 kg of organic fertilizer and 0.2 - 0.3 kg of long-acting slow-release compound fertilizer per plant per year in the 2nd - 4th years after afforestation; after the 5th year, applying 5.0 - 8.0 kg of organic fertilizer and 0.3 - 0.5 kg of long-acting slow-release compound fertilizer per plant per year.

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