Method for stumping, renewal and rejuvenation of flower stick artificial forest

Abstract

The invention belongs to the technical field of stumping of plants in desert regions, and particularly relates to a stumping, renewing and rejuvenation method for a flower stick artificial forest. The invention provides a stumping, renewal and rejuvenation method for a flower stick artificial forest, which comprises flower stick selection and flower stick stumping treatment, and the flower stick stumping treatment comprises setting of different stumping periods, different stumping heights and different stumping densities. According to the method, the optimal condition for scientific feeding stumping of the desert area sand hedychium japonicum artificial forest is comprehensively provided, and a scientific basis is provided for scientific feeding hedychium japonicum resources.

Description

Technical Field

[0001] The invention belongs to the technical field of pruning of flower sticks in desert areas, and in particular relates to a method for pruning and renewing a flower stick plantation. Background Art

[0002] Corethrodendron scoparium is a xerophytic shrub of the genus Corethrodendron in the Fabaceae family. It has a well-developed root system and is drought-resistant, heat-resistant, and wind-proof and sand-fixing. It is a dominant tree species for sandy land ecological construction in desert areas and can produce significant ecological benefits. At the same time, Corethrodendron scoparium can also be used as a green high-protein forage to help the development of the breeding industry, alleviate the shortage of forage in animal husbandry, and promote a virtuous cycle of ecological and economic benefits. However, the degree of lignification of Corethrodendron scoparium will increase after years of growth, and the clusters will gradually dry up or even die, causing the degradation of Corethrodendron forests and the decline of their sand-fixing and sand-fixing capabilities, which greatly affects the effectiveness of ecological construction. In addition, there is a shortage of forage in animal husbandry, especially in sandy areas with extremely low vegetation coverage. In order to better promote the growth and development of Corethrodendron scoparium, prevent and reduce the decline and death of Corethrodendron forests, and achieve the sustainable use of shrub resources, it is crucial to determine a reasonable stubble technology.

[0003] As a way to rejuvenate shrub forests, stubble technology can effectively prevent plant decay and death and promote the branching of shrub suckers. It is an important management method for the scientific and sustainable use of shrub resources and is widely used in shrub forest management. Stubble not only changes the apical dominance of plants, but also affects their branching ability, physiological characteristics, water utilization, etc. In addition, stubble can also alleviate the problem of insufficient forage in animal husbandry.

[0004] At present, the research on shrub pruning is mainly concentrated in the hilly areas of the Loess Plateau. The ecological environment in arid desert areas is fragile, with strong wind and sand activities, and limited soil nutrients and water, which leads to serious degradation of shrubs. However, there are few studies on the scientific pruning technology of shrubs in desert areas.

[0005] Therefore, finding a scientific method for pruning flower sticks in desert areas is of great significance to the ecological effects and scientific feeding of flower sticks. Summary of the invention

[0006] In view of this, the purpose of the present invention is to provide a method for renewing and rejuvenation of artificial flower stick forests by stubble. The method determines the optimal conditions for scientific stubble of artificial flower stick forests in sandy desert areas for feeding, and provides a basis for the scientific feeding of flower stick resources.

[0007] In order to achieve the above object, the present invention provides the following technical solutions:

[0008] In a first aspect, the present invention provides a method for renewing and strengthening a flower stick plantation by stubble removal, comprising flower stick area selection and flower stick stubble removal treatment, wherein the flower stick stubble removal treatment comprises setting different stubble removal periods, setting different stubble heights and setting different stubble removal densities.

[0009] Preferably, the setting of different stubble periods specifically includes:

[0010] The flower sticks were pruned in mid-April, May, June, July, August, September and October respectively, and the nutrient content was then measured. The feeding value was evaluated based on the nutrients and the regeneration performance was monitored. The pruning period was determined by the relative feeding value of the flower sticks. The pruning period of the flower sticks was determined to be June.

[0011] In the present invention, a backpack brush cutter is used to perform ground stubble (i.e., 0 cm stubble) in April, May, June, July, August, September, and mid-October, respectively, and then used for the determination of nutrient content. The study found that the crude protein content of the stubble treatment in May was the highest, the crude fat content was the highest in October, and the relative feeding value was the highest in June; in addition, in terms of regeneration performance, the regeneration speed, the increment of sprout length, the crown width, the increment of ground stems, and the number of branches of the flower sticks in September were the largest, showing a strong regeneration performance, while the regeneration performance in July and August was the smallest; in general, the flower sticks were suitable for stubble in June, which promoted the development of animal husbandry.

[0012] Preferably, the setting of different stubble heights specifically includes:

[0013] The stubble heights were set to 0 cm, 10 cm, 20 cm, and 30 cm, respectively, and then the flower stick regeneration performance was monitored; the stubble height of the flower stick was determined to be 0 cm.

[0014] In the present invention, the stubble heights are set to 0 cm, 10 cm, 20 cm, and 30 cm, respectively, and the regeneration performance of the flower sticks is monitored. Studies have shown that the stubble height has no significant effect on the aboveground biomass, and the flower stick regeneration speed, daily increment of sprout length, daily increment of ground diameter, crown width, and number of branches under the stubble of 0 cm are higher, showing better regeneration performance. Therefore, the sandy flower stick forest in the desert area of ​​Inner Mongolia is suitable for flat stubble (stubble of 0 cm).

[0015] Preferably, the setting of different stubble densities specifically includes:

[0016] The stubble density was set to 0%, 33%, 50%, 66% and 75% respectively, and then the changes in vegetation, soil properties and wind erosion characteristics of the flower stick plantation were monitored; the stubble density of the flower stick was determined to be 33%.

[0017] Preferably, the stubble rate of 0% is no stubble, the stubble rate of 33% is stubbled every two strips, the stubble rate of 50% is stubbled every other strip, the stubble rate of 66% is stubbled every other strip, and the stubble rate of 75% is stubbled every other strip, three strips.

[0018] In the present invention, a backpack brush cutter is used to carry out strip stubbing, and 5 stubbing densities are set, namely, no stubbing (0% stubbing), stubbing one strip every two strips (33% stubbing), stubbing one strip every other strip (50% stubbing), stubbing two strips every other strip (66% stubbing), and stubbing three strips every other strip (75% stubbing), all of which are stubbed flush with the ground (i.e., leaving 0 cm of stubble), and changes in forest vegetation, soil properties, and wind erosion characteristics are monitored. The study found that vegetation characteristics did not respond significantly to changes in stubble density. In addition, the soil nutrient content was the highest when the stubble density was 33%, and the wind speed and temperature in the forest increased with the increase of stubble density. The total effect of stubble 33% and stubble 66% was a deposition effect, and the other treatments were wind erosion effects. In terms of sand transport, the total amount of sand transport and sand transport flux increased with the increase of stubble density. The stubble 33% treatment had the highest powder content, organic carbon and total nitrogen content in the wind-blown sand sediments. Under each stubble density, the organic carbon and total nitrogen content of the wind-blown sand flow sediments increased with the increase of the sand collector height. Therefore, the stubble of flower sticks is suitable for the method of stubble every two belts, that is, stubble 33%.

[0019] Preferably, the flower stick area selection specifically includes:

[0020] In the northern desert area (study area: Erkehashaha Sumu, Alxa Left Banner, Alxa League, Inner Mongolia), areas with consistent terrain, vegetation, soil, and direction of taro planting belts were selected, and taro forests with a forest age of 4 years or more were pruned.

[0021] Preferably, the flower sticks in the flower stick area are specifically:

[0022] The row spacing of the flower stick forest is 5m, and the spacing between flower stick clusters is 3m. They have been growing for 4 years or more and are seriously lignified.

[0023] Preferably, the management after pruning is also included, and the management after pruning specifically includes:

[0024] Clean up the branches after pruning, bury the loose flower sticks at the root neck, strengthen the closed management, and prevent domestic livestock from eating the branches that sprout from the pruning.

[0025] In a second aspect, the present invention provides a method for renewing and rejuvenation of artificial tung oil tree forests on sandy land in desert areas, including the method described in the present invention.

[0026] In a third aspect, the pruning method provided by the present invention is applied in the renewal and rejuvenation of artificial flower stick forests on sandy land in desert areas.

[0027] Compared with the prior art, the beneficial effects of the present invention are:

[0028] (1) The ecological environment in desert areas is fragile, with low vegetation coverage. With the increase of planting years, the flower sticks show signs of slow growth, severe lignification and other signs of decay and aging. At the same time, bald spots appear in the forest land, and the ability to prevent and fix sand is reduced, which seriously affects the ecological benefits. Therefore, the flower sticks need to be pruned. Pruning can promote the sprouting of new branches on the flower sticks, vigorous growth, and improved forest quality. Therefore, scientific pruning technology is crucial. Therefore, the effects of different pruning periods on the nutrient characteristics, feeding value and regeneration performance of flower sticks, as well as the effects of different stubble heights on the regeneration performance of flower sticks, are studied to determine the optimal pruning period and stubble height.

[0029] (2) In desert areas, wind and sand activities are intense and the resources provided by the soil are limited. Under these conditions, the effects of different stubble densities on the vegetation characteristics of the stalk-shaped woodland forest, soil physical and chemical properties, microclimate, soil wind erosion characteristics, mechanical composition of wind-eroded sediments, and nutrient characteristics were studied to determine the optimal stubble density. The optimal conditions for scientific stubble feeding of artificial stalk-shaped woodland forests in desert sands were comprehensively proposed to provide a basis for the scientific feeding of stalk-shaped woodland resources.

[0030] (3) The compensatory growth capacity of plants in desert areas. After pruning, their aboveground biomass can be quickly restored. Pruning can play an important role in the physiological characteristics, regeneration performance, soil properties and wind erosion characteristics of plants. Therefore, the utilization of shrub resources needs to be scientifically pruned in combination with specific needs. In the practice of scientific pruning for feeding, considering the different growth habits and positions of the flower sticks, the stubble height has an important influence on the regeneration performance of shrubs; in addition, the time of germination, flowering and fruiting of the flower sticks and the late growing season are different. Therefore, different pruning periods have different effects on the nutrient content and biomass of the flower sticks, which is an important factor affecting the scientific feeding and regeneration of shrubs; furthermore, the appropriate pruning method is crucial to resource utilization and ecosystems, especially in areas with severe wind erosion and frequent sandstorms. While utilizing shrub resources, strip pruning has a significant effect on soil and water conservation in forest belts. At the same time, different pruning densities of strip pruning will also have different effects on the ecosystem.

[0031] (4) To achieve the purpose of flower cob renewal and rejuvenation and scientific feeding, the present invention studies the effects of different stubble periods, different stubble heights and different stubble densities on flower cobs. From the perspective of the relative feeding value of flower cobs, the present invention determines that the most suitable stubble period is mid-June; the best stubble height is stubble flush with the ground (stubble 0 cm); taking into account wind erosion characteristics, ecological protection and stubble feeding, the flower cob forest can be stubbed at a density of 33%. BRIEF DESCRIPTION OF THE DRAWINGS

[0032] Figure 1 Schematic diagram of stubble height.

[0033] Figure 2 is a schematic diagram of stubble density; Indicates a cluster of stalked stalks ... that have been pruned. DETAILED DESCRIPTION

[0034] The technical solution of the present invention is clearly and completely described below in conjunction with the embodiments. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] Example 1

[0036] This embodiment provides a method for renewing and strengthening an artificial sedge forest in a desert sandy land.

[0037] The method for regeneration and rejuvenation of the artificial flower stick forest in this embodiment is located in the Erkehashaha Sumu research area of ​​Alashan Left Banner, Alashan League, Inner Mongolia, between 37°42′-38°38′ north latitude and 103°21′-104°10′ east longitude. The area is located in the hinterland of the Tengger Desert in the southwest of Alashan Left Banner, and has a typical temperate continental monsoon climate with cold winters and hot summers, strong winds, much sand, drought and little rain, and frequent wind erosion and sandstorms.

[0038] Tools for trimming: backpack brush cutter, ruler, string, marker, pen.

[0039] Selection of pruning area: The row spacing of the flower stick forest in this area is 5m, and the spacing between flower stick clusters is 3m. It has been growing for 4 years, growing slowly, showing lignification and a tendency to degenerate.

[0040] Stubble period: In April, May, June, July, August, September and mid-October, randomly select a strip of flower sticks in the test site and use a backpack brush cutter to stubble them. The stubble method is to stubble flush with the ground (i.e., leave stubble 0 cm), and repeat 3 times. At the same time, select (select the first-level branches of the three flower sticks with large, medium and small growth in turn, and avoid selecting dry and dead branches when selecting) and bring part of the flower sticks after stubble back to the Grassland Adaptive Management Laboratory of the College of Forestry and Grassland of Ningxia University for segmentation, drying and crushing, and determine the nutritional content of the flower sticks and evaluate the feeding value; at the same time, mark them and determine the regeneration performance;

[0041] Stubble height: In September, use a backpack brush cutter to trim the flower sticks. Set 4 stubble heights of 0cm, 10cm, 20cm, and 30cm. Repeat each height 3 times. Use a tag to mark and fix it. Then measure the regeneration performance of the flower sticks. Figure 1 shown.

[0042] Stubble density: In September, a backpack brush cutter was used to perform strip stubble. Five stubble densities were set, namely, no stubble (0% stubble), one strip stubble every two strips (33% stubble), one strip stubble every other strip (50% stubble), two strip stubble every other strip (66% stubble), and three strip stubble every other strip (75% stubble). All of them were stubbled flush with the ground (i.e., 0 cm stubble left). Three replicates were set for each treatment, and the stubble was all flush with the ground. Changes in forest vegetation, soil properties, and wind erosion characteristics were measured. Figure 2 shown.

[0043] Management after pruning: After pruning, clean up the branches, bury the loose flower sticks at the root neck, strengthen the closure management, and prevent livestock from eating the branches sprouting from the pruning.

[0044] In order to achieve the purpose of flower stick renewal and rejuvenation and scientific feeding, the embodiment of the present invention studies the effects of different stubble periods, different stubble heights and different stubble densities on flower sticks. With the increase of planting years, flower sticks show signs of decay and aging such as slow growth and severe lignification. At the same time, bald spots appear in the forest land, and the ability to prevent and fix sand is reduced, which seriously affects the ecological benefits. Therefore, the flower sticks need to be stubbed for the first time. Stubble can promote the sprouting of new branches on the flower sticks, vigorous growth, and improved forest quality. Therefore, scientific stubble technology is crucial. From the perspective of the relative feeding value of flower sticks, the present invention determines that the most suitable stubble period is mid-June; the best stubble height is stubble flush with the ground (stubble 0 cm); taking into account wind erosion characteristics, ecological protection and stubble feeding, the flower stick forest can be stubbed at a density of 33%.

[0045] The embodiments described above are only some embodiments of the present invention, not all embodiments. The detailed description of the embodiments of the present invention is not intended to limit the scope of the invention claimed for protection, but only represents selected embodiments of the present invention. All other embodiments obtained without creative work and related deductions and substitutions made by ordinary technicians in the field under the conditions of the concept of the present invention belong to the scope of protection of the present invention.

Claims

1. A method for renewing and strengthening a stalk-shaped pollen plantation, characterized in that: The method comprises flower stick selection and flower stick stubble treatment, wherein the flower stick stubble treatment comprises setting different stubble periods, different stubble heights and different stubble densities.

2. The method according to claim 1, characterized in that The setting of different stubble periods specifically includes: The flower sticks were pruned in mid-April, May, June, July, August, September and October respectively, and the nutrient content was then measured. The relative feeding value was evaluated based on the nutrients, and the regeneration performance was monitored at the same time; the pruning period was determined by the relative feeding value of the flower sticks; and the pruning period of the flower sticks was determined to be June.

3. The method according to claim 2, characterized in that The setting of different stubble heights specifically includes: The stubble heights were set to 0 cm, 10 cm, 20 cm, and 30 cm, respectively, and then the flower stick regeneration performance was monitored; the stubble height of the flower stick was determined to be 0 cm.

4. The method according to claim 3, characterized in that The setting of different stubble densities specifically includes: The pruning density was set to 0%, 33%, 50%, 66% and 75% respectively, and then the vegetation, soil properties and wind erosion characteristics of the flower stick plantation were monitored; the pruning density of the flower stick was determined to be 33%.

5. The method according to claim 1, characterized in that The flower stick selection specifically includes: In the northern desert area, select areas with consistent terrain, vegetation, soil and direction of taro planting belts, and taro forests with a forest age of 4 years or more shall be pruned.

6. The method according to claim 5, characterized in that The flower sticks in the flower stick area are as follows: The row spacing of the flower stick forest is 5m, and the spacing between flower stick clusters is 3m. They have been growing for 4 years or more and are seriously lignified.

7. The method according to claim 4, characterized in that The stubble of 0% means no stubble, the stubble of 33% means stubble of one strip every two strips, the stubble of 50% means stubble of one strip every other strip, the stubble of 66% means stubble of two strips every other strip, and the stubble of 75% means stubble of three strips every other strip.

8. A method for renewing and strengthening artificial spatholobi forests in desert sandy land, characterized in that: The method comprising any one of claims 1 to 7.

9. Use of the method according to any one of claims 1 to 7 in the regeneration and rejuvenation of artificial spatholobi forests on sandy land in desert areas.

10. Use of the method according to any one of claims 1 to 7 in the regeneration and rejuvenation of artificial stalked sedge forests in the Erkehashaha Sumu research area of ​​Alxa Left Banner, Alxa League, Inner Mongolia.

Images