A cultivation method for preventing early decline of pinus sylvestris

Abstract

The application discloses a cultivation method for preventing early decline of Pinus sylvestris, and belongs to the technical field of Pinus sylvestris cultivation. The cultivation of Pinus sylvestris is carried out through the steps of site selection and soil preparation, seedling raising and afforestation, and post-forest management and protection. Through the technology, the early decline phenomenon of shortening of the life cycle and early maturation of traditional Pinus sylvestris cultivation technology is prevented, the resistance of Pinus sylvestris to diseases and insect pests is greatly improved, the service life of the planted Pinus sylvestris is guaranteed, the management and protection cost is reduced, and the production cost is greatly reduced.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of Pinus sylvestris var. mongolica cultivation, and particularly relates to a cultivation method for preventing early decline of Pinus sylvestris var. mongolica. BACKGROUND

[0002] Pinus sylvestris var. mongolica is a geographical variety of Pinus sylvestris, and is naturally distributed in Hulun Buir sandy land and northern mountainous area of Daxing'anling in China. Pinus sylvestris var. mongolica has excellent characteristics such as drought resistance, cold resistance and poor soil tolerance, and has become a main afforestation tree species for the three-north shelterbelt project and the sand control project in China. However, a large area of artificial sand-fixing forest has appeared to be in decline and dieback, and a considerable part of Pinus sylvestris var. mongolica forest will be destroyed if the development continues. Therefore, it is an important problem to treat the declining artificial sand-fixing forest of Pinus sylvestris var. mongolica in order to consolidate the construction achievements of the three-north shelterbelt project.

[0003] The decline and dieback of Pinus sylvestris var. mongolica is not caused by a single factor, but is a result of the comprehensive action of factors such as latitude, climate, water, nutrients and geography. However, the decline of artificial Pinus sylvestris var. mongolica forest outside the natural distribution area is an early decline phenomenon of a shortened life cycle and an advanced mature period, and the main factors affecting the early decline are water and nutrients. Pinus sylvestris var. mongolica artificial forest is an ecological system subjected to strong human disturbance. In the case that nutrients are continuously lost and cannot be supplemented, the level of nutrients in the whole system is directly affected by the reabsorption efficiency and nutrient utilization efficiency of Pinus sylvestris var. mongolica needle leaves in the artificial forest. The imbalance of nutrients induces tree vigor decline and disease and pest occurrence, such as pine shoot moth, mainly the larvae of which cause damage, and mainly feed on the top of the main shoot. If not treated in time, it may cause side shoot clustering or the tree to present a curved and deformed state, which seriously affects the landscape value and timber value of the pine tree. Disease and pest further affect the normal growth of the tree, and further lead to the occurrence of Pinus sylvestris var. mongolica dieback, and finally lead to the death of Pinus sylvestris var. mongolica.

[0004] At present, in order to improve the stability of Pinus sylvestris var. mongolica artificial sand-fixing forest, different improvement measures are taken according to the growth conditions of the artificial forest, such as taking measures of leaving strong trees and cutting weak trees, narrow belt management thinning and wide belt management thinning to adjust the stand structure, which can prevent the early decline of Pinus sylvestris var. mongolica artificial sand-fixing forest. However, these methods need flexible adjustment by human, and have large labor intensity, time-consuming and laborious, and the disease and pest of the tree need to be adjusted separately, and cannot be simply prevented and treated by using existing pesticides. The existing traditional prevention and treatment method is to spray a large amount of antibacterial pesticides, and the pesticides are easily washed away when it rains or irrigates, the drug effect is shortened, and environmental pollution and pesticide residues are caused at the same time. Therefore, it is necessary to find a method to simultaneously solve the problems of disease and pest and early decline and dieback of Pinus sylvestris var. mongolica. SUMMARY

[0005] Therefore, the present application aims to provide a cultivation method for preventing early decline of Pinus sylvestris, which can improve the survival rate of Pinus sylvestris, reduce the mortality and disease and pest damage of Pinus sylvestris, and solve the problems of early decline and disease and pest damage of Pinus sylvestris during cultivation.

[0006] The present application solves the above technical problems by the following technical means:

[0007] The present application provides a cultivation method for preventing early decline of Pinus sylvestris, which comprises the following steps:

[0008] (1) Selecting and preparing the land: removing the sundries in the seedling land, ploughing and disinfecting, applying the base fertilizer after ploughing, the base fertilizer being 0.1% diammonium phosphate, 20% organic fertilizer, 6% fine sand, 1% ferrous sulfate and 72.9% loess, the base fertilizer being applied in an amount of 10-20 tons per mu, then breaking the soil clods in the land, raking the land and forming ridges, preparing the seedling bed, and ensuring the flatness of the bottom of the seedling bed;

[0009] (2) Seedling raising and afforestation: first planting shrubs, then mixedly planting Pinus sylvestris seedlings with an age of 4 years, watering the Pinus sylvestris seedlings before seedling raising, bundling the seedlings and dipping the root part in mud slurry, planting in the pits, filling in wet soil and tamping, watering enough, covering the film after water infiltration, and applying the anti-decline agent;

[0010] Preferably, the shrubs are one or more of poplar, larch and Korean pine.

[0011] (3) Post-forest management: regularly checking and replanting; performing weeding and nursing work every year to avoid damage to the trees by animals and the like.

[0012] Further, the anti-decline agent in the step (2) is divided into A agent and B agent;

[0013] The A agent comprises the following raw materials by mass:

[0014] 10-14 parts by mass of diatomite, 8-10 parts by mass of sodium silicate, 2-5 parts by mass of phenoxyacetic acid, 8-11 parts by mass of calcium chloride, and 0.3-1 part by mass of glycine;

[0015] The B agent comprises the following raw materials by mass:

[0016] 0.2-0.6 parts by mass of cetyltrimethylammonium bromide, 5-9 parts by mass of microcrystalline cellulose, 2-7 parts by mass of glacial acetic acid, 4-6 parts by mass of acetic anhydride, and 0.02-0.06 parts by mass of diphenyl ketone.

[0017] Further, the preparation method of the A agent is as follows: uniformly mixing diatomite, sodium silicate, phenoxyacetic acid, calcium chloride and glycine, and continuously stirring with water to obtain the A agent.

[0018] Further, the preparation method of the B agent is as follows:

[0019] (1) accurately take bromide hexadecyl trimethyl ammonium, microcrystalline cellulose, diphenyl ketone, in turn into the acetone stirring 15-20 min prepared mixed solution A;

[0020] (2) take acetic anhydride, glacial acetic acid, add water to dissolve to obtain mixed solution B, finally mixed solution A, mixed solution B stirring uniform, get B agent.

[0021] Further, the specific steps of the step (2) of applying the anti-aging agent are as follows: cleaning the pine tree trunk, applying the A agent under the pine tree in March-April, cleaning the pine tree trunk and spraying the B agent in May-June, and girdling the pine tree trunk after the spraying is completed.

[0022] Further, the girdling is located at the top of the tree trunk, and the width is 8-10 mm and the depth is 3-4 mm.

[0023] Further, the dosage of the A agent is 3-4 kg per tree, and the spraying dosage of the B agent is 0.5 kg per tree.

[0024] Further, the width of the seedbed in the step (1) is 1.2-1.4 m, the length is 14-18 m, and the depth is 0.24-0.26 m.

[0025] Since the factors affecting the early decline of the Pinus sylvestris are multiple, when treating the early decline of the Pinus sylvestris, the prepared anti-aging agent is divided into A agent and B agent for synergistic effect. The calcium chloride and sodium silicate contained in the A agent provide micro-fertilizer, provide plant effective and necessary calcium ions, in addition, can improve the cold and drought resistance of the Pinus sylvestris, improve the survival ability of the Pinus sylvestris, the added phenoxyacetic acid and glycine can promote the synthesis of the precursors necessary for photosynthesis in the Pinus sylvestris, and then improve the photosynthetic capacity of the Pinus sylvestris; not only promote the growth of the Pinus sylvestris, but also promote the soil nutrient absorption efficiency; the B agent is used on the trunk of the Pinus sylvestris, the added microcrystalline cellulose can penetrate into the gaps of the Pinus sylvestris bark, so that the surface roughness of the Pinus sylvestris trunk is reduced and the adhesion is improved, and at the same time, synergistic bromohexadecyltrimethylammonium and diphenyl ketone prevent the attachment of insect eggs in the trunk gap. The bark of the Pinus sylvestris is girdled, and after girdling, resin will flow out, when the microcrystalline cellulose is combined with the hydroxyl groups and other groups in the bark, and then combined with the resin flowing out after the bark is cut, the resin is uniformly attached to the surface of the bark, forming a natural and green protective interface, the glacial acetic acid and acetic anhydride in the B agent prevent the resin from flowing too much on the trunk, can promote the volatilization and solidification of the resin, so that the proportion of solidifiable resin acid in the secreted resin increases, so that a dense whole is obtained, protecting the Pinus sylvestris from insect attack. Of course, when the Pinus sylvestris is girdled, the girdling depth should be appropriate, preferably 3-5 mm, and the width is preferably about 8-10 mm, and at the same time, the damage to the Pinus sylvestris xylem should be avoided, and the cut should be smooth.

[0026] Advantages:

[0027] 1. The prepared A agent and B agent are used in combination, which can improve the survival ability of the Pinus sylvestris and greatly improve the resistance of the Pinus sylvestris to diseases and insect pests.

[0028] 2. The prepared agent and the natural resin in the Pinus sylvestris body jointly act on the environment, have less pollution to the environment, will not cause environmental pollution, and can be combined with the resin, so that the resin is not easy to fall off, forming a natural and green protective interface, having good insect prevention effect and not causing environmental pollution.

[0029] 3. The technology can improve the early decline problem of shortening of the life cycle and advance of the mature period caused by the traditional Pinus sylvestris cultivation technology, the life of the planted Pinus sylvestris is guaranteed, the management and protection cost is reduced, and the production cost is greatly reduced. Specific embodiments

[0030] The application will be described in detail below with reference to the embodiments:

[0031] The application provides a cultivation method for preventing the early decline of the Pinus sylvestris, but the anti-aging agent needs to be prepared in advance, and the specific preparation steps of the prepared anti-aging agent are as follows:

[0032] Example 1: Preparation of the anti-aging agent

[0033] The anti-aging agent of the present application is composed of A agent and B agent, and needs to be prepared respectively:

[0034] Preparation of A agent: uniformly mix 12 kg of diatomite, 9 kg of sodium silicate, 3 kg of phenoxyacetic acid, 10 kg of calcium chloride, and 0.7 kg of glycine, and then add 34.7 kg of water to continue stirring to obtain A agent.

[0035] Preparation of B agent:

[0036] (1) accurately weigh 0.4 kg of cetyltrimethylammonium bromide, 7 kg of microcrystalline cellulose, and 0.04 kg of diphenyl ketone, and then add them into 14.88 kg of acetone to stir for 17 min to obtain a mixed solution A;

[0037] (2) weigh 5 kg of acetic anhydride and 5 kg of glacial acetic acid, and then add them into 10 kg of water to dissolve to obtain a mixed solution B, and finally uniformly mix the mixed solution A and the mixed solution B to obtain B agent.

[0038] Example 2: Preparation of the anti-aging agent

[0039] Preparation of A agent: uniformly mix 10 kg of diatomite, 8 kg of sodium silicate, 2 kg of phenoxyacetic acid, 8 kg of calcium chloride, and 0.3 kg of glycine, and then add 28.3 kg of water to continue stirring to obtain A agent.

[0040] Preparation of B agent:

[0041] (1) accurately weigh 0.2 kg of cetyltrimethylammonium bromide, 5 kg of microcrystalline cellulose, and 0.02 kg of diphenyl ketone, and then add them into 10.44 kg of acetone to stir for 15 min to obtain a mixed solution A;

[0042] (2) weigh 4 kg of acetic anhydride and 2 kg of glacial acetic acid, and then add them into 6 kg of water to dissolve to obtain a mixed solution B, and finally uniformly mix the mixed solution A and the mixed solution B to obtain B agent.

[0043] Example 3: Preparation of the anti-aging agent

[0044] Preparation of A agent: uniformly mix 14 kg of diatomite, 10 kg of sodium silicate, 5 kg of phenoxyacetic acid, 11 kg of calcium chloride, and 1 kg of glycine, and then add 41 kg of water to continue stirring to obtain A agent.

[0045] Preparation of B agent:

[0046] (1) Accurately take 0.6 kg of cetyltrimethylammonium bromide, 9 kg of microcrystalline cellulose, 0.06 kg of diphenyl ketone, and add them into 19.32 kg of acetone in turn to stir for 20 min to prepare a mixed solution A;

[0047] (2) Take 6 kg of acetic anhydride, 7 kg of glacial acetic acid, and add them into 13 kg of water to dissolve to obtain a mixed solution B, and finally mix the mixed solution A and the mixed solution B uniformly to obtain B agent.

[0048] Preparation of the anti-aging agent of Comparative Example 1

[0049] This comparative example is different from Example 1 in that the raw materials used in the preparation of A agent in Comparative Example 1 lack phenoxyacetic acid and diatomite, and the rest of the steps and the raw materials used are the same. The specific preparation process is as follows:

[0050] Preparation of A agent: uniformly mix 9 kg of sodium silicate, 10 kg of calcium chloride, and 0.7 kg of glycine, and then add 34.7 kg of water to continue stirring to prepare A agent.

[0051] Preparation of B agent: the same as Example 1.

[0052] Preparation of the anti-aging agent of Comparative Example 2

[0053] This comparative example is different from Example 1 in that the raw materials used in the preparation of B agent in Comparative Example 2 lack cetyltrimethylammonium bromide and microcrystalline cellulose, and the rest of the steps and the raw materials used are the same. The specific preparation process is as follows:

[0054] Preparation of A agent: the same as Example 1.

[0055] Preparation of B agent:

[0056] (1) Accurately take 0.04 kg of diphenyl ketone, add it into 14.88 kg of acetone, and stir for 17 min to prepare a mixed solution A;

[0057] (2) Take 5 kg of acetic anhydride, 5 kg of glacial acetic acid, and add them into 10 kg of water to dissolve to obtain a mixed solution B, and finally mix the mixed solution A and the mixed solution B uniformly to obtain B agent.

[0058] Preparation of the anti-aging agent of Comparative Example 3

[0059] This comparative example is different from Example 1 in that Comparative Example 3 lacks the mixed solution B prepared from acetic anhydride and glacial acetic acid in the preparation of B agent, and the rest of the steps and the raw materials used are the same. The specific preparation process is as follows:

[0060] Preparation of A agent: the same as Example 1.

[0061] Preparation of B agent: 0.4 kg of cetyltrimethylammonium bromide, 7 kg of microcrystalline cellulose, and 0.04 kg of diphenyl ketone were accurately weighed and added into 14.88 kg of acetone to prepare a mixed solution A, which was stirred for 17 min to obtain the B agent.

[0062] Example 4: Cultivation of Pinus sylvestris var. mongolica

[0063] Example 4 is the cultivation of Pinus sylvestris var. mongolica, and the anti-aging agent prepared in Example 1 is used in the cultivation process of Pinus sylvestris var. mongolica in this example.

[0064] The specific cultivation steps are as follows:

[0065] (1) Select land and prepare the soil: remove debris from the seedbed and till and disinfect the soil. After tilling, apply a base fertilizer, which is 0.1% diammonium phosphate, 20% organic fertilizer, 6% fine sand, 1% ferrous sulfate, and 72.9% loess. The base fertilizer is applied at a rate of about 10 tons per mu. Then break up the soil clods, rake the land flat, and create ridges to prepare the seedbed. The seedbed is 1.3 m wide, 16 m long, and 0.24 m deep. Ensure that the bottom of the seedbed is level.

[0066] (2) Seedling raising and afforestation: first plant Pinus koraiensis and Pinus sylvestris var. mongolica, then plant Pinus sylvestris var. mongolica with a tree age of 4 years. The planting density of Pinus sylvestris var. mongolica is 30 trees per mu, and the overall density of the forest is maintained at 600 trees per hectare. 2 Before the Pinus sylvestris var. mongolica seedlings are raised, they are watered and dipped in mud at the roots. They are planted in holes, filled with wet soil, and tamped down. They are watered and covered with a film after the water has infiltrated. In March, 3.5 kg of A agent is applied to the Pinus sylvestris var. mongolica trees. In June, the Pinus sylvestris var. mongolica tree trunks are cleaned and sprayed with 0.5 kg of B agent. Then, a ring cut is made at the top of the Pinus sylvestris var. mongolica tree trunks, with a width of 9 mm and a groove depth of 3 mm.

[0067] (3) Post-forest management: Regularly check and replant; carry out weeding and care work every year to avoid damage to the trees by animals, etc.

[0068] Comparative Example 4: Cultivation of Pinus sylvestris var. mongolica

[0069] The difference between this comparative example and Example 4 is that in step (2) of this comparative example, the anti-aging agent prepared in Example 1 (i.e., A agent and B agent are not used) is not sprayed during seedling raising and afforestation. The remaining steps and materials used are the same as in Example 4. The specific step (2) is as follows:

[0070] (2) Seedling raising and afforestation: first plant Pinus koraiensis and Pinus sylvestris var. mongolica, then plant Pinus sylvestris var. mongolica. The planting density of Pinus sylvestris var. mongolica is 30 trees per mu. Before the Pinus sylvestris var. mongolica seedlings are raised, they are watered and dipped in mud at the roots. They are planted in holes, filled with wet soil, and tamped down. They are watered and covered with a film after the water has infiltrated.

[0071] Comparative Example 5: Cultivation of Pinus sylvestris var. mongolica

[0072] Compared with Example 4, the only difference in this comparative example is that in step (2) of seedling transplantation, only agent A of the anti-aging agent prepared in Example 1 was used, and agent B was not used. The remaining steps and raw materials used are the same as in Example 4. The specific steps are as follows:

[0073] (2) Seedling raising and afforestation: First plant Korean pine and larch, then mix and plant Scots pine. The planting density of Scots pine is 30 trees / mu. Before raising the Scots pine seedlings, irrigate the bottom with enough water, wrap the seedlings and dip the roots in mud slurry, plant them in the pit, fill in the wet soil and tamp it down, water them thoroughly, and cover them with film after the water has seeped in. In March, apply 3.5 kg of Agent A under the Scots pine trees.

[0074] Comparative Example 6: Cultivation of Pinus sylvestris var. mongolica

[0075] The only difference between this comparative example and Example 4 is the cultivation method in step (2). No crossbreeding was performed, and the anti-aging agent prepared in Example 1 was used in the cultivation of Pinus sylvestris in this comparative example. The remaining steps and raw materials used are the same as in Example 4. The specific steps (2) are as follows:

[0076] (2) Seedling raising and afforestation: Plant 4-year-old Scots pine trees at a planting density of 30 trees / mu, maintaining an overall forest density of 600 trees / hm. 2 Before transplanting the Scots pine seedlings, thoroughly water the soil, wrap the seedlings and dip the roots in mud slurry, plant them in the pit, fill with moist soil and tamp it down, water thoroughly, and cover with mulch after the water has seeped in. In March, apply 3.5 kg of Agent A under the Scots pine tree. In June, clean the Scots pine trunk and spray it with 0.5 kg of Agent B. Then, make a ring cut at the top of the Scots pine trunk, cutting a ring wound with a width of 9 mm and a depth of 3 mm.

[0077] Comparative Example 7: Cultivation of Pinus sylvestris var. mongolica

[0078] Compared with Example 4, the only difference in this comparative example is that in step (2) of seedling raising and afforestation, only agent B of the anti-aging agent prepared in Example 1 was used, and agent A was not used. The remaining steps and raw materials used are the same as in Example 4. The specific steps are as follows:

[0079] (2) Seedling raising and afforestation: First plant Korean pine and larch, then mix them with Scots pine. The planting density of Scots pine is 30 trees / mu, and the overall forest density is maintained at 600 trees / hm. 2 Before transplanting the Scots pine seedlings, thoroughly water the soil, wrap the seedlings and dip the roots in mud slurry, plant them in the pit, fill with wet soil and tamp it down, water thoroughly, and cover with mulch after the water has seeped in. In June, clean the Scots pine trunk and spray it with 3.5 kg of Agent B. Then, make a ring cut at the top of the Scots pine trunk, making a ring wound with a width of 9 mm and a depth of 3 mm.

[0080] Comparative Example 8: Cultivation of Pinus sylvestris

[0081] This comparative example is compared with Example 4, the only difference is that only the prepared growth retardant of Example 1 is used in step (2) of the seedling afforestation in this comparative example, but the girdling treatment is not used, and the rest of the steps and the used raw materials are the same as those of Example 4, and the specific steps are as follows:

[0082] (2) Seedling afforestation: first plant Pinus sylvestris and Larix gmelinii, and then plant Pinus sylvestris mixedly, the planting density of Pinus sylvestris is 30 trees per mu, and the overall density of the forest is maintained at 600 trees per hm 2 , before the seedling of Pinus sylvestris, the bottom water is filled, the seedling is baled and dipped in mud slurry at the root, and is planted in the pit, filled with wet soil and tamped, and poured with water, and after the water infiltrates, the film is covered, 3.5 kg of A agent is applied under the Pinus sylvestris tree in March, and the tree trunk of Pinus sylvestris is cleaned and sprayed with 0.5 kg of B agent in June.

[0083] Test 1, sample selection:

[0084] Select 2-year-old Pinus sylvestris of the same variety without pests and diseases for cultivation, and divide them into 9 groups, namely experimental group 1 and control groups 1-8, each group has 30 trees.

[0085] 2, planting method:

[0086] Experimental group 1: the cultivation method of Example 4 is selected, wherein the growth retardant is the prepared growth retardant of Example 1;

[0087] Control groups 1-3: all use the cultivation method of Example 4, wherein the growth retardants are respectively prepared by Comparative Examples 1-3;

[0088] Control groups 4-8: respectively use the cultivation methods of Comparative Examples 4-8, wherein control group 4 does not use growth retardant, control group 5 only uses A agent prepared in Example 1, control group 6 uses the prepared growth retardant of Example 1, control group 7 uses B agent prepared in Example 1, and control group 8 uses the prepared growth retardant of Example 1.

[0089] 3, experimental records: the location is in Mengjiawan Township, Yuyang District, Yulin City, Shaanxi Province, under natural conditions, before cultivation, after one year of cultivation, and after five years of cultivation, the tree height, diameter at breast height and survival rate of each group are measured, three times, and the results are shown in Table 1:

[0090] Table 1

[0091]

[0092] From Table 1, it can be seen that:

[0093] 1、Comparative group 1-3 and experimental group 1, only the change of the anti-aging agent composition. Comparative group 1 does not add phenoxyacetic acid and diatomite in the anti-aging agent, the tree height of the Pinus sylvestris var. mongolica before cultivation, one year after cultivation, five years after cultivation is 0.26m, 0.42m, 1.14m respectively, the corresponding diameter at breast height is 1.28cm, 3.60cm, 8.89cm respectively, the survival rate after five years is 90.0%. It cannot improve the growth condition of the Pinus sylvestris var. mongolica well, the Pinus sylvestris var. mongolica is weak, and the subsequent use of the agent has certain influence, the resin secreted is not enough, and the protection effect is weakened. Comparative group 2 does not add cetyltrimethylammonium bromide and microcrystalline cellulose, the protective layer formed on the tree trunk is easily washed by rainstorm; the tree height of the Pinus sylvestris var. mongolica before cultivation, one year after cultivation, five years after cultivation is 0.23m, 0.44m, 1.22m respectively, the corresponding diameter at breast height is 1.25cm, 3.79cm, 8.63cm respectively, the survival rate after five years is 83.3%. The tree height of the Pinus sylvestris var. mongolica of comparative group 3 before cultivation, one year after cultivation, five years after cultivation is 0.25m, 0.40m, 1.19m respectively, the corresponding diameter at breast height is 1.21cm, 3.45cm, 8.41cm respectively, the survival rate after five years is 86.7%, and comparative group 3 does not add acetic anhydride and glacial acetic acid, the resin on the tree trunk solidifies slowly, and the effective component is easy to denature and inactivate, thus failing to form an effective effect of preventing and treating pests subsequently.

[0094] 2、Comparative group 4 and experimental group 1, no anti-aging agent is added in the planting process, the tree height of the Pinus sylvestris var. mongolica before cultivation, one year after cultivation, five years after cultivation is 0.24m, 0.37m, 1.07m respectively, the corresponding diameter at breast height is 1.24cm, 2.31cm, 6.94cm respectively, and the survival rate after five years is 80.0%. In the prevention and treatment of early aging, only the effect of external nutrient supply and mixed cultivation can be relied on to prevent and treat early aging, and no real resistance is possessed, thus the prevention and treatment effect is poor; comparative group 5 only uses A agent in the under-forest planting, comparative group 7 only uses B agent, comparative group 8 only uses A agent, and B agent is not subjected to ring cutting treatment. Comparative group 6 does not adopt the mixed cultivation method in the planting process, pure forest cultivation is adopted, a relatively rich ecological community is not formed, the tree height and diameter at breast height of the Pinus sylvestris var. mongolica grow slowly, the survival rate is relatively low, and an effective cultivation mode for preventing and treating early aging cannot be formed.

[0095] The above examples are only used to illustrate the technical solutions of the present application but not limit the present application, although the present application is described in detail with reference to the preferred embodiments, it should be understood by those skilled in the art that the technical solutions of the present application can be modified or replaced equivalently without departing from the purpose and scope of the technical solutions of the present application, and all should be covered in the scope of the claims of the present application. The technical, shape and structure parts not described in detail in the present application are all known technologies.

Claims

1. A cultivation method for preventing early decline of Pinus sylvestris, characterized by, The cultivation method comprises the following steps: (1) site preparation: remove debris in the seedling field and plough and disinfect, apply base fertilizer after ploughing, then break up the soil clods, rake the land and form ridges to prepare the seedbed; (2) seedling raising and afforestation: first plant shrubs, then plant Scots pines, water the Scots pines before seedling, dip the seedlings in mud slurry at the root, plant in the pit, fill in wet soil and tamp, water thoroughly, cover the film after water infiltration, and apply the anti-aging agent; (3) post-forest management: regularly check and replant, weed and care; the anti-aging agent in step (2) is divided into A agent and B agent; the A agent comprises the following raw materials in parts by mass: 10-14 parts by mass of diatomite, 8-10 parts by mass of sodium silicate, 2-5 parts by mass of phenoxyacetic acid, 8-11 parts by mass of calcium chloride, and 0.3-1 part by mass of glycine; the B agent comprises the following raw materials in parts by mass: 0.2-0.6 parts by mass of cetyltrimethylammonium bromide, 5-9 parts by mass of microcrystalline cellulose, 2-7 parts by mass of glacial acetic acid, 4-6 parts by mass of acetic anhydride, and 0.02-0.06 parts by mass of diphenyl ketone; the preparation method of the B agent is as follows: (1) weigh cetyltrimethylammonium bromide, microcrystalline cellulose and diphenyl ketone, add them into acetone in sequence, stir for 15-20 min to prepare a mixed solution A; (2) weigh acetic anhydride and glacial acetic acid, add water to dissolve to obtain a mixed solution B, and finally mix the mixed solution A and the mixed solution B to obtain the B agent.

2. A method of cultivating Pinus sylvestris to prevent early decline according to claim 1, characterized in that, The preparation method of the A agent is as follows: mix diatomite, sodium silicate, phenoxyacetic acid, calcium chloride and glycine, continue to stir after adding water, and the A agent is prepared.

3. A method of cultivating Pinus sylvestris to prevent early decline according to claim 2, characterized in that, The specific steps of applying the anti-aging agent in step (2) are as follows: in March-April, apply the A agent under the Scots pine trees, in May-June, clean the Scots pine tree trunks and spray the B agent, and after spraying, girdle the Scots pine tree trunks to form ring-shaped wounds.

4. A method of cultivating Pinus sylvestris to prevent early decline according to claim 3, characterized in that, The ring-shaped wounds are located at the top of the trunks, the width is 8-10 mm, and the groove depth is 3-4 mm.

5. A method of cultivating Pinus sylvestris to prevent early decline according to claim 4, characterized in that, The dosage of the A agent is 3-4 kg per tree, and the spraying dosage of the B agent is 0.5 kg per tree.

6. A method of cultivating Pinus sylvestris to prevent early decline according to claim 5, characterized in that, The seedbed width of the seedbed in step (1) is 1.2-1.4 m, the length is 14-18 m, and the depth is 0.24-0.26 m.

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