A method for rejuvenating Fargesia quadrangularis forest
By adjusting the age structure of bamboo forests and combing underground stems, the problems of the reduction in the yield of square bamboo forests year by year and the increase in pests and diseases were solved, and the stable and bumper production of bamboo shoots and the comprehensive recovery of bamboo forests were achieved.
Patent Information
- Application Number
- CN202410731427.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Patents(China)
- Current Assignee / Owner
- Filing Date
- 2024-06-06
- Publication Date
- 2025-06-27
- Estimated Expiration
- 2044-06-06
AI Technical Summary
The existing technology cannot achieve stable and high yields and comprehensive rejuvenation of square bamboo forests, resulting in a decrease in bamboo shoot output year by year, and the increase in bamboo poles and bamboo shoots are affected by pests and diseases.
By adjusting the age structure of bamboo forests, young bamboo, strong bamboo and adult bamboo are retained, damaged, lodged bamboo poles or pests are harvested, and mature bamboos are gradually cut off, combined with combing and cutting of underground stems, the bamboo shoot rate and bamboo shoot yield are improved.
The bamboo shoot output in square bamboo forests has increased annually, reaching 100% or more in three years, achieving the goal of stable and bumper production and comprehensive recovery, while reducing the incidence of pests and diseases.
Smart Images
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Abstract
Description
Technical Field
[0001] The invention relates to the technical field of bamboo forest rejuvenation, and in particular to a method for rejuvenation of a square bamboo forest. Background Art
[0002] Chimonobambusa quadrangularis (Fenzi) Makino is a plant of the genus Fenzi in the Poaceae family. It is 3 to 8 meters tall and nearly square. The new culms are densely covered with prickles and hairs. Each node below the middle of the culm has curved thorn-like aerial roots. Chimonobambusa quadrangularis is an excellent small timber bamboo species with high strength and good toughness. The culms can be used as walking sticks and are often used to make handicrafts. The flowering period is March to April, the seeds mature in May, and the shoot period is September to October. The bamboo shoots are fine in texture, thick in flesh, and delicious and tender. It is mainly distributed in Jiangsu, Anhui, Chongqing, Guizhou, and Yunnan in China, and is an important economic bamboo species in the southwest region.
[0003] Square bamboo shoots are known as the king of bamboo shoots, with excellent quality and good market price. However, traditional square bamboo forest production management is extensive, which makes the ratio of bamboos of different ages unsuitable, resulting in a decrease in bamboo shoot yield year by year, an increase in the number of bamboo poles and bamboo shoots affected by diseases and pests, an increase in the density of disease and pest populations, and a significant decrease in bamboo forest growth and bamboo shoot yield.
[0004] At present, the square bamboo forest is usually rejuvenated by cutting down old bamboos, adjusting the age structure of bamboo forests and applying fertilizers, thereby increasing the yield of bamboo shoots in the square bamboo forest. The yield of the square bamboo forest increased by 34.2% in the first year, about 26% in the second year, and 19% in the third year. It can be seen that the existing method only increases the yield of the square bamboo forest in the first year. As time goes by, the yield of the bamboo forest decreases year by year. By the third year, the yield increase is less than 20%, which cannot achieve the stable and high yield of square bamboo shoots and fully achieve the purpose of rejuvenating the square bamboo forest.
[0005] Therefore, it is necessary to provide a rejuvenation method that can enable the square bamboo forest to produce sustained, stable and high yields. Summary of the invention
[0006] In order to solve the problem in the prior art that it is impossible to achieve stable and high yield of square bamboo forests and thus achieve complete rejuvenation, the present invention provides a method for rejuvenation of square bamboo forests.
[0007] The present invention realizes a reasonable bamboo forest age structure ratio of the Fang bamboo forest by adjusting the age structure of the bamboo forest, that is, retaining young bamboo, middle-aged bamboo and mature bamboo, felling damaged, fallen or diseased and weak bamboo affected by pests and diseases, and gradually cutting down the over-mature bamboo, so that the Fang bamboo forest to be rejuvenated can not only improve the photosynthetic efficiency and the growth amount of the bamboo forest, but also increase the ability of the Fang bamboo forest to resist pests and diseases, withstand wind, snow and toppling. By combing and cutting the rhizomes, the bamboo shoot emergence rate and the yield of bamboo shoots are improved, so that the yield of the Fang bamboo forest increases year by year, reaching an increase of 100% or more in three years, thus realizing stable and high-yield production of the Fang bamboo forest and comprehensive rejuvenation.
[0008] To achieve the above object, the specific technical solution of the present invention is as follows.
[0009] A method for rejuvenating a Fang bamboo forest, comprising the following steps:
[0010] Form first bamboo forest belts and second bamboo forest belts with spaced arrangements for the Fang bamboo forest to be rejuvenated; the widths of the first bamboo forest belts and the second bamboo forest belts can be specifically set according to the actual scope of the Fang bamboo forest to be rejuvenated, and the present invention does not limit the widths of the first bamboo forest belts and the second bamboo forest belts; preferably, the width of the first bamboo forest belt is less than the width of the second bamboo forest belt;
[0011] The specific formation process of the first bamboo forest belt is as follows: cut down all the above-ground bamboo poles; comb and cut the rhizomes to promote the bamboo shoot emergence rate and the yield of bamboo shoots in the current year, and after the cutting is completed, carry out full reclamation of the land, fertilize, and cover the soil;
[0012] Among them, the Fang bamboo forest to be rejuvenated refers to a low-yield and low-efficiency Fang bamboo forest, and the felling is carried out along the contour line of the mountain or in the north-south direction on the flat ground; the over-mature bamboo poles are bamboo poles that are four years old or above, and the diseased bamboo poles are bamboo poles invaded by pests and diseases; the weak bamboo poles are mostly slender bamboo poles with insufficient nutrition in the late stage of bamboo shoot emergence.
[0013] The specific formation process of the second bamboo forest belt is as follows: cut down the over-mature bamboo poles and the diseased and weak bamboo poles to adjust the age structure of the bamboo forest and improve the growth amount of the Fang bamboo forest and the yield of bamboo shoots; the proportion of the number of Fang bamboo in each age period in the age structure of the bamboo forest is: 30% - 40% for young bamboo, 20% - 30% for middle-aged bamboo, 20% - 30% for mature bamboo, and 10 - 15% for over-mature bamboo, with a total of 100%;
[0014] In the initial stage of bamboo shoot emergence, that is, from the start of bamboo shoot emergence to the 10th day: pick the bamboo shoots emerging in the initial bamboo shoot stage in the second bamboo forest belt, and pick the newly emerging bamboo shoots in the first bamboo forest belt; the bamboo shoots emerging in the initial bamboo shoot stage are bamboo shoots about 20 cm out of the ground;
[0015] In the middle stage of bamboo shoot emergence, that is, from the 10th day to the 30th day of bamboo shoot emergence: retain the bamboo shoots emerging in the middle bamboo shoot stage or the peak bamboo shoot emergence stage in the second bamboo forest belt and cultivate them into bamboo; retain the bamboo shoots emerging in the first bamboo forest belt and cultivate them into bamboo;
[0016] In the late stage of bamboo shoot emergence, that is, after the 30th day of shoot emergence: all bamboo shoots that have emerged about 20 cm above the ground are completely harvested;
[0017] Repeat the above steps in the second and third years to complete the rejuvenation of the square bamboo forest.
[0018] The present invention realizes a reasonable proportion of standing bamboo age structure in the bamboo forest by retaining young bamboo, middle-aged bamboo and mature bamboo, and harvesting old and mature bamboo that is damaged, fallen, weak or diseased, and gradually cutting down the old and mature bamboo; in the age structure of the bamboo forest, the proportion of 1-year-old young bamboo is the largest, and the main purpose is to increase the overall photosynthetic efficiency of the square bamboo forest, thereby effectively improving the growth of the bamboo forest. Retaining a certain amount of middle-aged or mature bamboo, the main purpose is to increase the overall ability of the square bamboo forest to resist wind, snow and toppling.
[0019] In another preferred embodiment, the young bamboo is one-year-old square bamboo, the middle-aged bamboo is two-year-old square bamboo, the mature bamboo is three-year-old square bamboo, and the mature bamboo is four-year-old and above square bamboo.
[0020] In another preferred embodiment, the bamboo density of the second bamboo forest belt is 3-4 culms / m 2 .
[0021] By regulating the bamboo density of the second bamboo forest belt and the density of healthy bamboo culms in the first bamboo forest belt, not only can the internal light of the square bamboo forest be sufficient as a whole, reducing the nutrient competition between bamboo forest belts and affecting the later growth of bamboo. For the whole bamboo forest, the method of adjusting the bamboo age structure is adopted, retaining 30%-40% of young bamboo, 20%-30% of middle-aged bamboo, 15%-25% of mature bamboo, and 10%-20% of old and mature bamboo. In the implementation of this method, the cut bamboo culms are basically retained in the bamboo forest, and the removal labor cost is relatively high, so it is rarely used in production practice, increasing the risk of bamboo forest diseases and pests.
[0022] In another preferred embodiment, the specific process of combing and cutting the rhizomes is as follows:
[0023] Retain 1-year-old rhizomes and cut off 2-year-old and above rhizomes.
[0024] Square bamboo belongs to the scattered bamboo category. Its shoot emergence amount has the closest relationship with the growth of rhizomes. Moreover, the annual growth length of rhizomes and the number of shoot buds formed directly affect the shoot emergence rate and bamboo shoot yield in the current year. Therefore, the growth management of square bamboo rhizomes directly affects the health of the square bamboo forest and the bamboo shoot yield.
[0025] By retaining 1-year-old rhizomes and cutting off 2-year-old and above rhizomes, the growth of rhizomes can be effectively repaired, so that the shoot emergence rate and bamboo shoot yield can be significantly improved.
[0026] In another preferred embodiment, the density of the bamboo shoots retained in the second bamboo forest belt during the middle shoot stage or the peak shoot emergence stage is 2 to 3 shoots per square meter. 2 .
[0027] In another preferred embodiment, the density of the bamboo shoots retained in the first bamboo forest belt during the middle shoot stage or the peak shoot emergence stage is 3 to 5 shoots per square meter. 2 .
[0028] In another preferred embodiment, the bamboo shoots emerging during the early shoot stage are the shoots emerging 10 days before shoot emergence;
[0029] The bamboo shoots emerging during the middle shoot stage or the peak shoot emergence stage are the shoots emerging from the 10th day to the 30th day of shoot emergence;
[0030] The late shoot emergence stage is the shoots emerging from the 30th day of shoot emergence to the following spring.
[0031] In another preferred embodiment, the cultivated bamboo forest also includes pest and disease control. The specific methods for pest and disease control of square bamboo forests are as follows:
[0032] Firstly, rejuvenate the bamboo forest land. Secondly, for pest and disease control, install black lights around the square bamboo forest. Most of the pests that cause great harm to the degraded square bamboo forest are Lepidoptera pests. Hanging black lights around the bamboo forest to trap the adult Lepidoptera pests can achieve the goal of pest control. Thirdly, cut down the mature and old bamboo poles and the weak and diseased bamboo poles and burn them or make them into bamboo charcoal, that is, harmless treatment.
[0033] By carrying out harmless treatment on the mature and old bamboo poles and the weak and diseased bamboo poles, the number of pest and disease sources can be effectively reduced, and the occurrence of pests and diseases can be greatly prevented. Especially by removing the weak and diseased bamboo poles and carrying out harmless treatment, the incidence of square bamboo sooty mold and rust can be reduced.
[0034] Compared with the prior art, the present invention has the following beneficial effects:
[0035] (1) The present invention realizes a healthy and vigorous standing bamboo age structure ratio in the bamboo forest by retaining young bamboo, strong bamboo, and mature bamboo, felling damaged, fallen, weak, and pest-infected bamboo poles, and cutting down mature bamboo. By adjusting the bamboo age structure, the proportion of young bamboo is increased, which improves the photosynthetic efficiency of the square bamboo forest, increases the growth of the bamboo forest, and retaining a certain amount of strong and mature or mature bamboo can improve the ability of the square bamboo forest to resist wind, snow, and toppling. By combing and cutting the rhizomes, the shoot emergence rate and the bamboo shoot yield can be effectively increased, so that the bamboo shoot yield of the square bamboo forest increases by more than 30% year by year on the original basis, and the bamboo shoot yield can increase by more than 100% in the third year.
[0036] (2) The present invention can effectively reduce the number of pest and disease sources and reduce the incidence of square bamboo sooty mold, rust, etc. by carrying out harmless treatment on the cut mature and old bamboo poles and the weak and diseased bamboo poles.
[0037] (3) The present invention hangs black light lamps on the edge of bamboo forests to lure and kill adult lepidopteran pests, thereby achieving the goal of insect prevention. DETAILED DESCRIPTION
[0038] In order to make the purpose, technical solution and advantages of the present invention more clearly understood, the present invention is further described in detail below in conjunction with the embodiments. It should be understood that the specific embodiments described herein are only used to explain the present invention and are not used to limit the present invention.
[0039] Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without making any creative work shall fall within the scope of protection of the present invention.
[0040] In the embodiments of the present invention, the materials and equipment used, unless otherwise specified, can be purchased on the market.
[0041] In the process of square bamboo forest management, due to long-term extensive management, bamboos of different ages in the square bamboo forest are not structurally suitable, which leads to a decrease in bamboo shoot yield year by year, an increase in the number of bamboo poles and bamboo shoots damaged by pests and diseases, an increase in the density of pests and diseases, and a significant decrease in bamboo forest growth and bamboo shoot yield. In order to increase the yield of square bamboo forests, rejuvenation is currently usually used to increase the yield of square bamboo forests.
[0042] At present, the commonly used rejuvenation method is to adopt the cultivation methods such as cutting down old bamboos and applying fertilizers according to the high-yield cultivation technology requirements of square bamboo forests, which is quite different from the high-yield square bamboo forest structure in the unit area. However, the above method is difficult to restore the growth and bamboo shoot yield of square bamboo forests in a short period of time, and the method cannot achieve stable and high yield of bamboo shoots in square bamboo forests, and the whole rejuvenation process consumes a lot of manpower and material resources.
[0043] The embodiment of the present invention provides a method for rejuvenation of a square bamboo forest, comprising the following steps:
[0044] From May to June, the square bamboo forest to be rejuvenated forms the first bamboo forest belt and the second bamboo forest belt set at intervals;
[0045] The specific formation process of the first bamboo forest belt is as follows: all the above-ground bamboo poles are cut down; the underground rhizomes are combed and cut to promote the shoot emergence rate and bamboo shoot yield in the current year; after the standing bamboo is felled, strip-shaped full reclamation and soil preparation are carried out, the underground rhizomes are combed and cut, fertilized, and covered with soil; since Chimonobambusa quadrangularis belongs to scattered bamboo, the relationship between the shoot emergence amount and the growth of underground rhizomes (rhizomes) is the closest. The annual growth length of underground rhizomes (rhizomes) and the number of shoot buds formed directly affect the shoot emergence rate and bamboo shoot yield in the current year. Therefore, the growth management of the underground rhizomes (rhizomes) of Chimonobambusa quadrangularis directly affects the health of the Chimonobambusa quadrangularis forest and the bamboo shoot yield. The core of the rejuvenation technology is the repair of the growth of underground rhizomes (rhizomes). In the embodiment of the present invention, the underground rhizomes are combed and cut to promote the growth of underground rhizomes (rhizomes) in the current year, improve the shoot emergence rate, and increase the bamboo shoot yield.
[0046] The specific formation process of the second bamboo forest belt is as follows: cut down old bamboo poles and weak and diseased bamboo poles to adjust the age structure of the bamboo forest and accelerate the growth and yield improvement of the Chimonobambusa quadrangularis forest; the proportion of Chimonobambusa quadrangularis in each age period in the age structure of the bamboo forest is: young bamboo 30% - 40%, middle-aged bamboo 20% - 30%, mature bamboo 20% - 30%, and mature bamboo 10 - 15%, with a total of 100%;
[0047] Among them, young bamboo can increase the overall photosynthetic efficiency of the Chimonobambusa quadrangularis forest, and thus can effectively improve the growth of the bamboo forest; middle-aged bamboo can increase the overall ability of the Chimonobambusa quadrangularis forest to resist wind, snow, and toppling; mature bamboo has formed dense branches and leaves and a large rhizome system, which can fully absorb nutrients and water for photosynthesis, thereby further improving the growth of the bamboo forest.
[0048] Burn or make bamboo charcoal from the cut old, diseased, and weak bamboo poles above. By this method, the number of pest sources can be effectively reduced, and the occurrence of pests and diseases can be greatly reduced. Especially by removing old, weak, and diseased bamboo poles and making harmless treatment, the incidence of sooty mold and rust of Chimonobambusa quadrangularis can be reduced.
[0049] In September - October, at the initial stage of shoot emergence, that is, from the start of shoot emergence to the 10th day, all bamboo shoots about 20 cm out of the ground are dug.
[0050] In the middle stage of shoot emergence, that is, from the 10th day to the 30th day of shoot emergence, evenly retain 2 - 3 healthy and strong bamboo shoots per square meter in the second bamboo forest belt and cultivate them into bamboo. The rest of the bamboo shoots about 20 cm out of the ground can be all dug; evenly retain 3 - 5 bamboo shoots per square meter of the bamboo shoots emerged in the first bamboo forest belt and cultivate them into bamboo. The rest of the bamboo shoots about 20 cm out of the ground can be all dug;
[0051] In the late stage of shoot emergence, that is, after the 30th day of shoot emergence, all bamboo shoots about 20 cm out of the ground are dug.
[0052] Repeat the above steps in the second and third years to complete the rejuvenation of the Chimonobambusa quadrangularis forest.
[0053] The present invention realizes a reasonable proportion of standing bamboo age structure in the bamboo forest by retaining young bamboo, middle-aged bamboo and mature bamboo, and cutting and felling old and mature bamboo damaged, toppled, weak or affected by pests and diseases, and gradually cutting down the old and mature bamboo; in the age structure of the bamboo forest, the proportion of 1-year-old young bamboo is the largest, and the main purpose is to increase the overall photosynthetic efficiency of the square bamboo forest, thereby effectively improving the growth of the bamboo forest. Retaining a certain amount of middle-aged or mature bamboo mainly aims to increase the overall ability of the square bamboo forest to resist wind, snow and toppling.
[0054] Through three years, the rejuvenation treatment of the original low-yield and low-efficiency square bamboo forest can be completely achieved. At the same time, within the three years of the rejuvenation treatment, the bamboo shoot yield of the square bamboo forest increases by more than 30% year by year based on the original bamboo shoot yield. By the third year, the bamboo shoot yield can increase by 100% and above.
[0055] The old bamboo poles in the following embodiments refer to bamboo poles that are 4 years old or above; the diseased bamboo poles refer to those that can show obvious pest and disease invasion holes and disease spots on the bamboo poles after being invaded by pests and diseases, which directly affect the growth of the bamboo forest; the weak bamboo poles refer to those with slender and small bamboo poles, whose height and thickness are far lower than the average height and thickness of the bamboo poles in the bamboo forest, with poor growth and development, and can only resist wind and snow pressure by relying on the surrounding bamboo poles, and cannot independently withstand the wind and bear the snow on the branches and leaves; the strong bamboo poles refer to the component bamboo poles of the bamboo forest, which are strong in growth and can independently withstand the wind and bear the snow on the branches and leaves.
[0056] Example 1:
[0057] A method for rejuvenating a square bamboo forest includes the following steps:
[0058] S1. Select a low-yield and low-efficiency square bamboo forest. In May to June, second bamboo forest belts are respectively arranged at intervals in the square bamboo forest to be rejuvenated;
[0059] Among them, the width of the first bamboo forest belt is 90 cm, that is, a 90-cm bamboo forest area;
[0060] The width of the second bamboo forest belt is 180 cm, that is, an 180-cm bamboo forest belt;
[0061] The specific operation process of the 90-cm bamboo forest area is as follows: Along the mountain contour or in the north-south direction of the flat ground, cut down all the standing bamboo on the 90-cm-wide land, and then carry out full reclamation and soil preparation with a tillage depth of 20 cm. During the tillage, comb the rhizomes, retain the 1-year-old rhizomes, and bury them in place. Cut off the rhizomes over 2 years old and bury them in the ground on the spot. After completing the combing and cutting of the rhizomes, apply fertilizers at a rate of 5.5 kg / m 2 and then carry out soil covering treatment to obtain a 90-cm bamboo forest area;
[0062] Among them, the quality requirement of the covering soil is to cover all the rhizomes and the applied fertilizers; the fertilizer is a mixture of 5 kg of farmyard manure (organic fertilizer) and 0.5 kg of compound fertilizer;
[0063] The specific operation process of the 180-cm bamboo forest belt is as follows: Cut down the old and mature bamboo poles, all diseased bamboo poles and weak bamboos, and adjust the age structure of the bamboo forest to make the bamboo forest density 3 - 4 poles / m 2 , to obtain the 180-cm bamboo forest belt; the proportion of Chimonobambusa quadrangularis in each age period of the age structure of the bamboo forest is: young bamboo 30% - 40%, strong bamboo 20% - 30%, mature bamboo 20% - 30%, mature bamboo 10 - 15%, with a total of 100%;
[0064] S2. After concentrating and removing the cut old, diseased and weak bamboo poles from the bamboo forest, burn them or make them into bamboo charcoal; the above methods can effectively reduce the number of pest sources and can greatly prevent the occurrence of pests and diseases. Especially by removing the old, weak and diseased bamboo poles and carrying out harmless treatment, the incidence of sooty mold and rust of Chimonobambusa quadrangularis can be reduced.
[0065] S3. In the initial stage of bamboo shoot emergence from September to October (i.e., from the start of bamboo shoot emergence to the 10th day): Dig all the bamboo shoots that have emerged about 20 cm out of the ground;
[0066] In the middle stage of bamboo shoot emergence (i.e., from the 10th day to the 30th day of bamboo shoot emergence): Evenly retain 2 - 3 healthy and strong bamboo shoots per square meter in the 180-cm bamboo forest belt and cultivate them into bamboo, and the rest of the bamboo shoots can be dug out completely when they emerge about 20 cm out of the ground; evenly retain 3 - 5 healthy and strong bamboo shoots per square meter in the 90-cm bamboo forest area and cultivate them into bamboo, and the rest of the bamboo shoots can be dug out completely when they emerge about 20 cm out of the ground;
[0067] S4. In the late stage of bamboo shoot emergence, that is, from the 30th day of bamboo shoot emergence to the next spring, dig all the bamboo shoots;
[0068] S5. In the second and third years, repeat steps S1 - S4 to complete the rejuvenation of the Chimonobambusa quadrangularis forest; and hang black lights beside the bamboo forest to trap and kill the adults of Lepidoptera pests to achieve the goal of pest control.
[0069] By using the above rejuvenation method, the rejuvenation treatment of the original low-yield and low-efficiency Chimonobambusa quadrangularis forest can be completely achieved in three years. During the three years of rejuvenation treatment, the bamboo shoot yield of the Chimonobambusa quadrangularis forest increases by more than 30% year by year on the basis of the original bamboo shoot yield. By the third year, the bamboo shoot yield can increase by more than 100%.
[0070] Control example 1:
[0071] Adopt the existing technology and only through the cultivation method of cutting down all the old, weak and diseased bamboos and applying fertilizers. The specific process is as follows:
[0072] The bamboo forest to be rejuvenated is evenly divided into two parts, and the method in Example 1 and the prior art are used as the comparative example respectively, that is, rejuvenation is carried out only by cutting down all old, weak and diseased bamboos and fertilizing, and the changes in the bamboo shoot yield of the square bamboo forest are recorded. The results are shown in Table 1.
[0073] Table 1 Increase in bamboo shoot yield of square bamboo forest by different rejuvenation methods
[0074]
[0075]
[0076] It can be seen from the results in Table 1 that in the comparative example, the increase in the square bamboo forest in the first year was 34.2%, about 26% in the second year, and 19% in the third year. Compared with the method in the present invention, the method in Example 1 of the present invention can achieve the annual increase in the yield of the square bamboo forest, achieve the goal of stable and high yield, and can achieve the comprehensive rejuvenation of the square bamboo. It shows that the present invention can achieve stable and high yield of bamboo shoot yield in the square bamboo forest by adjusting the bamboo forest structure and combing the underground rhizomes (whips), and can increase the yield by 100% or more in three years, achieving the comprehensive rejuvenation of the square bamboo forest.
[0077] The present invention realizes a reasonable proportion of standing bamboo age structure in the bamboo forest by retaining young, strong and mature bamboos, felling damaged, fallen, weak and diseased bamboo poles, and cutting down old and mature bamboos. By adjusting the bamboo age structure, the photosynthetic efficiency of the square bamboo forest is increased by increasing the proportion of young bamboos, and the growth of the bamboo forest is improved. Retaining a certain amount of mature or old and mature bamboos can improve the resistance of the square bamboo forest to wind, snow and toppling. By further combing and cutting the underground rhizomes, the shoot emergence rate and bamboo shoot yield can be effectively increased, so that the bamboo shoot yield of the square bamboo forest can increase by more than 30% year by year on the original basis, and the bamboo shoot yield can increase by 100% or more in the third year.
[0078] The above are only the preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.
Claims
1. A method for rejuvenation of a bamboo forest, characterized in that: The following steps are involved: The square bamboo forest to be rejuvenated forms a first bamboo forest belt and a second bamboo forest belt set at intervals; The width of the first bamboo forest belt is 80 cm, and the width of the second bamboo forest belt is 180 cm; The specific formation process of the first bamboo forest belt is: all the above-ground bamboo poles are cut off; the underground stems are combed and cut off to promote the bamboo shoot growth rate and bamboo shoot yield of the current year; the specific process of combing and cutting the underground stems is as follows: retain the one-year-old underground stems, and cut off the underground stems of two years and above; The specific formation process of the second bamboo forest belt is: cutting down old and mature bamboo poles and sick and weak bamboo poles to adjust the age structure of the bamboo forest and accelerate the growth and yield of the square bamboo forest; the proportion of square bamboos of various ages in the age structure of the bamboo forest is: 30% to 40% of young bamboo, 20% to 30% of strong bamboo, 20% to 30% of mature bamboo, 10% to 15% of mature bamboo, and a total of 100%; the young bamboo is one-year-old square bamboo, the strong bamboo is two-year-old square bamboo, the mature bamboo is three-year-old square bamboo, and the old bamboo is four-year-old and above square bamboo; In the early stage of bamboo shoot growth, newly grown bamboo shoots in the first bamboo forest belt and bamboo shoots grown in the second bamboo forest belt are picked; the bamboo shoots grown in the early stage of bamboo shoot growth refer to the bamboo shoots grown 10 days before the growth; In the middle period of bamboo shoot growth, bamboo shoots grown in the middle period or the peak period of bamboo shoot growth in the second bamboo forest belt are retained; newly grown bamboo shoots grown in the first bamboo forest belt are retained and cultivated into bamboos; the bamboo shoots grown in the middle period or the peak period of bamboo shoot growth are those grown from the 10th to the 30th day of bamboo shoot growth; In the late stage of bamboo shoot growth, all bamboo shoots are harvested; the late stage of bamboo shoot growth refers to the period from the 30th day of bamboo shoot growth to the spring of the following year; Repeat the above steps in the second and third years to complete the rejuvenation of the square bamboo forest; the bamboo forest density of the second bamboo forest belt is 3 to 4 bamboos / m 2 The density of bamboo shoots in the middle or peak period of bamboo shoots in the second bamboo forest belt is 2 to 3 shoots / m 2 The density of bamboo shoots in the middle or peak period of bamboo shoots in the first bamboo forest belt is 3 to 5 shoots / m 2 .
2. The method for rejuvenation of a bamboo forest according to claim 1, characterized in that: The method for rejuvenation of the square bamboo forest also includes disease and insect pest control.