CN101341842A - High-yield culture technique of alder paper-pulp forest - Google Patents

Abstract

The invention discloses an alder paper pulp forest high-yield cultivation technology which is characterized by comprising the following steps: (1) the selection of afforestation land; (2) the clearing of the forestland; (3) the determination of initial planting density; (4) lofting; (5) soil preparation; (6) fertilization; (7) afforestation; (8) cultivation management. The invention relates to an alder paper pulp forest high-yield cultivation technology which can greatly improve the wood yield of alder.

Description

High-yield culture technique of alder paper-pulp forest

Technical field:

The present invention relates to silviculture, botany, plant physiology field.

Background technology:

Alder is because growth is rapid, nitrogen fixing capacity is strong, and wood property is similar to poplar and birch, can be used to develop different slurry kinds, joins to copy with softwood pulp or other hardwood pulp and can produce high-quality printing paper and writing paper etc.Alder genetic resources and existing production and operation level in view of China's abundant, greatly develop the alder paper-pulp raw material forest, development and use alder wood pulp has broad prospects, for the deficiency of alleviating softwood pulp, reduce the pulp production cost, it is significant to make China's paper-making industry be in competitive advantage on the wood raw material price.Therefore there is many large-scale forest culture and management enterprise that alder is grown up as pulpwood raw material forest large tracts of land.

In the process of development alder paper-pulp timberland, alder is as a quick growing species of trees, and the growth of young growth phase not rapidly, and is but drought-resistant, how to select suitable planting site, adopts a whole set of culture technique such as which kind of planting density directly to have influence on the yield per unit area of alder.Adopting rational culture technique to improve the alder paper-pulp forest timber yield is a key issue.

Summary of the invention:

The invention provides a kind of special alder paper-pulp forest that is used as, can improve the high-yield culture technique of timber yield.

For achieving the above object, the technical solution used in the present invention is: a kind of high-yield culture technique of alder paper-pulp forest is characterized in that: comprise the steps:

1. the selection of planting site: select plate shale, four discipline clay red soil, sandstone, the limestone of loosing soil to grow the Indian yellow red soil that forms, and the place that possesses moisture condition preferably is as the alder planting site;

2. forest land cleaning: the method that adds the method for surgerying or chemical subtraction with " refining mountain " before the whole ground with the weeds on the planting site, shrub etc. on the ground thing remove totally;

3. initial density in planting is definite: initial density in planting is 2000-2500 strain/hectare;

4. setting-out: according to the initial density in planting setting-out of determining, trend is general vertical with ridge line or parallel with contour, with lime the planting point is marked like clockwork by the sample rope;

5. wholely: the land preparation mode that adopts the cave to cultivate, the specification in cave is: the big 60-80 in cave centimetre, dark 50-70 centimetre;

6. fertilising:, generally execute phosphate fertilizer 0.25-0.5kg/ strain according to the nutrient situation of soil;

7. afforest: the mid-February in December to next year before the forest planting time sprouts behind fallen leaves; When planting, the nursery stock kind is gone into cave central authorities, the depth of planting is the 1/3-1/2 of seedling body length; When planting, container seedling requires plastic sack is scratched or tears off, gently pinch root system and mass of soil are combined closely, cave central authorities dig with a hoe out one with the consistent pitting of nursery stock mass of soil size specification, put container seedling into, alignment is set upright, backfill soil only needs around the compacting, and preserves moisture at the thick loose soil of surperficial backfill one deck 2-3cm, and its mass of soil is concordant with ground as long as the depth of planting is planted the back;

8. tending management: general continuous fostering 2 years, especially to container seedling; Afforest and impose alder composite fertilizer special 0.5kg/ strain 1 year 4-5 month.

The present invention is a high-yield culture technique of alder paper-pulp forest, can improve the timber yield of alder paper-pulp forest unit are greatly.

Embodiment:

1, the selection of planting site

The Indian yellow red soil that growths such as the plate shale of selection loosing soil, four discipline clay red soil, sandstone, limestone form, and possesses moisture condition preferably, can not be subjected to the threat of arid, the area that preferably possesses moistening microclimate, soil thickness is more than 60cm, in the mountain region that height above sea level 800m is following, descending is as the alder planting site.

2, forest land cleaning

The method that adds the method for surgerying or chemical subtraction with " refining mountain " before the whole ground with the weeds on the planting site, shrub etc. on the ground thing remove clean so that afforestation is constructed.

3, initial density in planting determines

Can make full use of soil fertility, the density that input-output ratio is the highest again is 2000-2500 strain/hectare.Adopt the setting-out of " product " font can select close partially density in the density range, adopt the setting-out mode of alignment anyhow can select rare partially density in the density range.

4, setting-out

Setting-out is according to the initial density in planting setting-out of determining, trend is general vertical with ridge line or parallel with contour, with lime the planting point is marked like clockwork by the sample rope, is beneficial to prepare for afforestation.

5, wholely

The land preparation mode that adopts the cave to cultivate, the specification in cave is: the big 60-80 in cave centimetre, dark 50-70 centimetre, the place that soil compaction, effective thickness approach is suitable big, dark, loosing soil, the ground that soil layer is thick can be suitably little, shallow, height above sea level is higher, site index reaches the forest land more than 18, can not put in order ground or carry out the whole ground of vesicle.

6, fertilising

According to the nutrient situation of soil, generally execute phosphate fertilizer 0.25-0.5kg/ strain, better if any the special-purpose fertile Hefei of the alder of special configuration, execute the 0.25-0.5kg/ strain.Height above sea level is higher, site index reaches the forest land more than 18, can not apply fertilizer.Basal dressing when afforesting half table soil of backfill in preceding about 1 month evenly is spread on fertilizer in the tree planting cave, and backfill cubsoil to flat cave plants fully.

7, afforestation

For guaranteeing survival rate, in the January in December to next year before had better should behind fallen leaves, sprouting in the forest planting time resting stage of nursery stock, should not surpass mid-February at the latest;

Nursery stock fresh and alive not dehydration of requirement or heating, stalwartness, basic lignification, terminal bud is full, root system is complete, have no mechanical damage, do not have damage by disease and insect, bareroot seedling height of seedling 〉=50cm, leading thread 〉=0.5cm; Container seedling height of seedling 〉=30cm, leading thread 〉=0.3cm.

When planting, the nursery stock kind is gone into cave central authorities, guarantee that seedling root unfolds, the not crooked and lodging of nursery stock, backfill soil will be densified to one hand and not be drawn out easily and be advisable, and planting pit is the dish shape in case arid, and the depth of planting is the 1/3-1/2 of seedling body length; When planting, container seedling requires plastic sack is scratched or tears off, gently pinch root system and mass of soil are combined closely, cave central authorities dig with a hoe out one with the consistent pitting of nursery stock mass of soil size specification, put container seedling into, alignment is set upright, and backfill soil only needs around the compacting, in order to avoid tramp mass of soil, damage seedling root and influence and survive, and preserve moisture at the thick loose soil of surperficial backfill one deck 2-3cm, its mass of soil is concordant with ground as long as the depth of planting is planted the back.

8, tending management

General continuous fostering 2 years is especially to container seedling.

Uprooted in 4-5 month in the 1st year and comfort the training root and stem of certain plants, root out the treelet square interior weeds shrub of 1m on every side, shovel pine table is native, and training root and stem of certain plants specification is to be the center with the tree, radius 30cm, height 20cm; Only needed in 1 year 4-5 month the square interior weeds shrub of 1m around the treelet is all surgeried;

1st, all comfort entirely 2 year autumn, surgery all weeds shrubs, be beneficial to fire prevention.

In addition, afforestation imposes alder composite fertilizer special 0.5kg/ strain 1 year 4-5 month.

Claims (1)

1, a kind of high-yield culture technique of alder paper-pulp forest is characterized in that: comprise the steps:

1. the selection of planting site: select plate shale, four discipline clay red soil, sandstone, the limestone of loosing soil to grow the Indian yellow red soil that forms, and the place that possesses moisture condition preferably is as the alder planting site;

2. forest land cleaning: the method that adds the method for surgerying or chemical subtraction with " refining mountain " before the whole ground with the weeds on the planting site, shrub etc. on the ground thing remove totally;

3. initial density in planting is definite: initial density in planting is 2000-2500 strain/hectare;

4. setting-out: according to the initial density in planting setting-out of determining, trend is general vertical with ridge line or parallel with contour, with lime the planting point is marked like clockwork by the sample rope;

5. wholely: the land preparation mode that adopts the cave to cultivate, the specification in cave is: the big 60-80 in cave centimetre, dark 50-70 centimetre;

6. fertilising:, generally execute phosphate fertilizer 0.25-0.5kg/ strain according to the nutrient situation of soil;

7. afforest: the mid-February in December to next year before the afforestation time sprouts behind fallen leaves; When planting, the nursery stock kind is gone into cave central authorities, the depth of planting is the 1/3-1/2 of seedling body length; When planting, container seedling requires plastic sack is scratched or tears off, gently pinch root system and mass of soil are combined closely, cave central authorities dig with a hoe out one with the consistent pitting of nursery stock mass of soil size specification, put container seedling into, alignment is set upright, backfill soil only needs around the compacting, and preserves moisture at the thick loose soil of surperficial backfill one deck 2-3cm, and its mass of soil is concordant with ground as long as the depth of planting is planted the back;

8. tending management: general continuous fostering 2 years, especially to container seedling; Afforest and impose alder composite fertilizer special 0.5kg/ strain 1 year 4-5 month.