Simple cuttage seedling raising method for high-yield silviculture of Salix suchowensis

Abstract

The invention discloses a simple cuttage seedling raising method for high-yield silviculture of Salix suchowensis. The method includes the following steps: (1) land consolidation before cuttage; (2) in late February, selecting fine and robust Salix suchowensis seedlings free from diseases and insect pests as cutting mother plants, cutting the base or middle part of one-year-old branches as cuttings, wherein the length of each cutting is 20cm, and the weight of the cuttings is 20-39g; (3) leaving at least one leaf bud at 1-2cm of the upper end of the cutting morphology, and cutting an oblique angle of 45-60 degrees at 2-4cm of the lower end of the cutting morphology to facilitate cutting; (4) soaking the cuttings in cold water for 36 to 72 hours before cutting; (5) vertically inserting thetreated cutting wedge-shaped opening into a field nursery downwards, and exposing the top ends of the cuttings to the ground for 3cm after cutting; and (6) management after cuttage. According to the method, cuttings with different ages, different parts and different sizes are screened, so that the cutting cost is effectively reduced and the yield is improved, and a guarantee is provided for realizing large-scale cutting seedling raising of Salix suchowensis.

Description

technical field

[0001] The invention belongs to the field of plant propagation, and in particular relates to a simple cutting seedling raising method for high-yield afforestation of Dustpan willow. Background technique

[0002] Short Rotation Coppice (SRC), as one of the important cultivation models of biomass direct combustion thermal power raw materials, has been successfully promoted and applied in many countries and regions in the world. Shrub willow grows rapidly and has a short rotation period. It is an important tree species for building short-cycle energy forests. Willow is a perennial plant. Compared with annual crops, shrub willow can be harvested in one year, and the harvesting cycle can reach more than 20 times. Usually, only weed control is required when the garden is built. After the forest stand is closed, there is no need for excessive manual management. After felling, the willow can also sprout new branches from the stump. Once the garden is built, it can g...

Examples

Embodiment 1

[0019] Example 1 Effects of Dustpan willow cuttings of different ages on the effect of large-scale cuttings for gardening

[0020] (1) The collection time of dustpan willow cuttings

[0021] In the middle and lower reaches of the Yangtze River, the climate has not yet warmed up in late February, and the flower buds and leaf buds of Dustpan willow have not yet unfolded. The carbohydrates and nutrients such as N and P in the branches have accumulated sufficient nutrients, which is conducive to the germination and growth of cuttings. In late February 2018, branches of offspring individuals of two full-sibling families of Dupan willow were collected from Sihong Forest Farm, Jiangsu.

[0022] (2) Collection and production of cuttings of different tree ages and field cutting experiments

[0023] Dustpan willow plants with a tree age of 1 year and 5 years were respectively selected as the mother plants for ear picking, and the middle or base of the 1-year-old branches were cut as cu...

Embodiment 2

[0031] The influence of embodiment 2 different parts of cuttings on the growth of Dustpan willow

[0032] (1) The collection time of dustpan willow cuttings

[0033] In the middle and lower reaches of the Yangtze River, the climate has not yet warmed up in late February, and the flower buds and leaf buds of Dustpan willow have not yet unfolded. The branches have sufficient carbohydrates and N, P and other nutrients, which are conducive to the germination and growth of cuttings. In late February 2018, branches of offspring individuals of two full-sibling families of Dupan willow were collected from Sihong Forest Farm, Jiangsu.

[0034] (2) Collection and production of cuttings from different parts and field cutting experiments

[0035] Select well-growing branches of Dustpan Willow, and cut the base, middle and upper three cuttings from each branch, and uniformly cut them into 20cm long. At least 1 bud is left at the top 1-2cm of the cuttings morphology, and an oblique angle ...

Embodiment 3

[0043] The influence of embodiment 3 different cuttings sizes on the growth of Dustpan willow

[0044] (1) The collection time of dustpan willow cuttings

[0045] In the middle and lower reaches of the Yangtze River, the climate has not yet warmed up in late February, and the flower buds and leaf buds of Dustpan willow have not yet unfolded. The carbohydrates and nutrients such as N and P in the branches are sufficient, which is conducive to the germination and growth of cuttings. In late February 2018, two individual branches of the offspring of the whole compatriot family of Dustpan willow were collected from Sihong Forest Farm, Jiangsu.

[0046] (2) Production and grading of Dustpan willow cuttings and field cutting experiment

[0047] Choose well-grown dustpan willow branches, and uniformly cut the branches into 20cm long cuttings. Leave at least 1 bud at the 1-2cm upper end of the cuttings morphology, and cut out an oblique angle of 45°-60° at the 2-4cm lower end of the...

technical field

[0001] The invention belongs to the field of plant propagation, and in particular relates to a simple cutting seedling raising method for high-yield afforestation of Dustpan willow. Background technique

[0002] Short Rotation Coppice (SRC), as one of the important cultivation models of biomass direct combustion thermal power raw materials, has been successfully promoted and applied in many countries and regions in the world. Shrub willow grows rapidly and has a short rotation period. It is an important tree species for building short-cycle energy forests. Willow is a perennial plant. Compared with annual crops, shrub willow can be harvested in one year, and the harvesting cycle can reach more than 20 times. Usually, only weed control is required when the garden is built. After the forest stand is closed, there is no need for excessive manual management. After felling, the willow can also sprout new branches from the stump. Once the garden is built, it can g...

Examples

Embodiment 1

[0019] Example 1 Effects of Dustpan willow cuttings of different ages on the effect of large-scale cuttings for gardening

[0020] (1) The collection time of dustpan willow cuttings

[0021] In the middle and lower reaches of the Yangtze River, the climate has not yet warmed up in late February, and the flower buds and leaf buds of Dustpan willow have not yet unfolded. The carbohydrates and nutrients such as N and P in the branches have accumulated sufficient nutrients, which is conducive to the germination and growth of cuttings. In late February 2018, branches of offspring individuals of two full-sibling families of Dupan willow were collected from Sihong Forest Farm, Jiangsu.

[0022] (2) Collection and production of cuttings of different tree ages and field cutting experiments

[0023] Dustpan willow plants with a tree age of 1 year and 5 years were respectively selected as the mother plants for ear picking, and the middle or base of the 1-year-old branches were cut as cu...

Embodiment 2

[0031] The influence of embodiment 2 different parts of cuttings on the growth of Dustpan willow

[0032] (1) The collection time of dustpan willow cuttings

[0033] In the middle and lower reaches of the Yangtze River, the climate has not yet warmed up in late February, and the flower buds and leaf buds of Dustpan willow have not yet unfolded. The branches have sufficient carbohydrates and N, P and other nutrients, which are conducive to the germination and growth of cuttings. In late February 2018, branches of offspring individuals of two full-sibling families of Dupan willow were collected from Sihong Forest Farm, Jiangsu.

[0034] (2) Collection and production of cuttings from different parts and field cutting experiments

[0035] Select well-growing branches of Dustpan Willow, and cut the base, middle and upper three cuttings from each branch, and uniformly cut them into 20cm long. At least 1 bud is left at the top 1-2cm of the cuttings morphology, and an oblique angle ...

Embodiment 3

[0043] The influence of embodiment 3 different cuttings sizes on the growth of Dustpan willow

[0044] (1) The collection time of dustpan willow cuttings

[0045] In the middle and lower reaches of the Yangtze River, the climate has not yet warmed up in late February, and the flower buds and leaf buds of Dustpan willow have not yet unfolded. The carbohydrates and nutrients such as N and P in the branches are sufficient, which is conducive to the germination and growth of cuttings. In late February 2018, two individual branches of the offspring of the whole compatriot family of Dustpan willow were collected from Sihong Forest Farm, Jiangsu.

[0046] (2) Production and grading of Dustpan willow cuttings and field cutting experiment

[0047] Choose well-grown dustpan willow branches, and uniformly cut the branches into 20cm long cuttings. Leave at least 1 bud at the 1-2cm upper end of the cuttings morphology, and cut out an oblique angle of 45°-60° at the 2-4cm lower end of the...