CN112119824B - Sagittaria trifolia cultivation method - Google Patents
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- 235000015909 Sagittaria sinensis Nutrition 0.000 title description 2
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- 235000015097 nutrients Nutrition 0.000 abstract description 3
- 241000543810 Sasa veitchii Species 0.000 description 21
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- 241000755535 Bambusa emeiensis Species 0.000 description 1
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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Abstract
The invention discloses a method for cultivating arrowheads, which comprises the following steps: controlling the number of the stock bamboo plants of the stock bamboo to be 6-15 plants/cluster, and controlling the average breast diameter of the stock bamboo to be 4-5cm, wherein the stock bamboo is a 1-3-year-old bamboo plant; controlling the ratio of 1-year-old bamboo plants in bamboo bush to 50% -70% in the current year from 11 months to the next year for 1 month, and keeping the content of CiciThe density of the vertical bamboo is less than 12000 plants hm ‑2 (ii) a Fertilizing bamboo clumps 4-5 months per year before bamboo shoots appear, digging annular fertilizing furrows around the bamboo clumps, wherein the depth of the fertilizing furrows is 20cm-30cm, the distance between the fertilizing furrows and the bamboo clumps is 5cm-10cm, and covering a soil layer of 5cm-10cm after fertilizer is scattered into the fertilizing furrows, wherein the application amount of nitrogen fertilizer in the fertilizer is 181 kg.hm ‑2 ‑192kg·hm ‑2 The application amount of the phosphate fertilizer is 8kg hm ‑2 ‑22kg·hm ‑2 The application amount of the potash fertilizer is 32 kg.hm ‑2 ‑49kg·hm ‑2 . According to the method for cultivating the arrowhead, the arrowhead is cultivated from two aspects of accurate regulation and control of the arrowhead structure and accurate regulation and control of the arrowhead nutrient, so that the arrowhead has higher reproduction rate and biomass growth rate at the same time, and the efficient operation of the arrowhead is facilitated.
Description
Technical Field
The invention relates to the field of arrowhead planting, in particular to a arrowhead cultivation method.
Background
The Sasa albo-marginata (Bambusa emeiensis L.C.Chia & H.L.Fung) is an important sympodial bamboo species in the southwest region of China, and has the characteristics of thin stalk wall, long internode, good thin bamboo strip property, long fiber and the like. The Sasa Sagittifolia Vahl is an excellent bamboo weaving and paper pulp raw material, belongs to the most main raw material bamboo species in the bamboo weaving industry in China, is widely applied in Sichuan, guizhou and other places, and is an important economic bamboo species with high yield and wide application.
Traditional ciba runs widely, has "heavily build light pipe", "experience felling" scheduling problem, and the felling bamboo is mainly felled according to market demand, and the randomness is high, does not consider the sustainable production ability of bamboo forest. Meanwhile, the Cizhu woodland management is extensive, and fertilization is performed by experience, so that the use efficiency of the fertilizer is reduced, and the risk of soil pollution is increased.
Therefore, how to provide a cultivation method capable of realizing efficient operation of the Sagittaria sagittifolia becomes a technical problem to be solved urgently in the field.
Disclosure of Invention
One purpose of the invention is to provide a new technical scheme of a Sagittaria sagittifolia cultivation method capable of realizing efficient operation of Sagittaria sagittifolia.
According to a first aspect of the present invention, there is provided a method for cultivating Sagittaria sagittifolia.
The arrowhead cultivating method comprises the following steps:
controlling the number of the stock bamboo plants of the stock bamboo to be 6-15 plants/cluster, and controlling the average breast diameter of the stock bamboo to be 4-5cm, wherein the stock bamboo is a 1-3-year-old bamboo plant;
controlling the ratio of 1-year-old bamboo plants in bamboo cluster to 50% -70% in the current year from 11 months to the next year by 1 month, and keeping the density of Sasa albo-marginata to be less than 12000 plants.hm -2 ；
Fertilizing bamboo clumps 4-5 months per year before bamboo shoots appear, digging annular fertilizing ditches around the bamboo clumps, wherein the depth of the fertilizing ditches is 20cm-30cm, the distance between the fertilizing ditches and the bamboo clumps is 5cm-10cm, spreading fertilizers into the fertilizing ditches, and covering soil layers of 5cm-10cm, wherein the application amount of nitrogen fertilizers in the fertilizers is 181 kg.hm -2 -192kg·hm -2 The application amount of the phosphate fertilizer is 8kg hm -2 -22kg·hm -2 The application amount of the potash fertilizer is 32 kg.hm -2 -49kg·hm -2 。
Optionally, the selection method of the mother bamboos for nursing is as follows:
cutting down the bamboo plants with diseases and insect pests;
reserving 6-15 bamboo plants which grow for 1-3 years and have the diameter at breast height of 4-5cm in the bamboo bush as mother bamboos for maintenance, and cutting the remaining 1-3-year-old bamboo plants in the bamboo bush.
Optionally, the number ratio of 1-year-old bamboo plants to the rest bamboo plants in the mother bamboo is (1-1.5): 1.
Optionally, the number ratio of the 2-year-old bamboo plants to the 3-year-old bamboo plants in the mother bamboo is 1:1.
Optionally, the proportion of 1 year old bamboo plants in the bamboo clumps is 60% -70%.
Optionally, the number ratio of 1-year-old bamboo plant, 2-year-old bamboo plant and 3-year-old bamboo plant in the bamboo clump is (3.5-4): 1:1.
Optionally, the number ratio of 1-year-old bamboo plants, 2-year-old bamboo plants and 3-year-old bamboo plants in the bamboo bush is 4.
Optionally, when the proportion of 1-year-old bamboo plants in the bamboo clump is controlled, 4-year-old and more than 4-year-old bamboo plants are felled.
Optionally, maintaining the density of Sasa albo-marginata at 8000 strain hm -2 -10000 strains hm -2 。
Optionally, the application amount of the phosphate fertilizer is 10kg hm -2 。
According to the method for cultivating the Sagittaria sagittifolia, the Sagittaria sagittifolia is cultivated from two aspects of the accurate regulation and control of the Sagittaria sagittifolia structure and the accurate regulation and control of the Sagittaria sagittifolia nutrient, so that the Sagittaria sagittifolia has higher reproduction rate and biomass growth rate at the same time, and the efficient operation of the Sagittaria sagittifolia is facilitated.
Other features of the present invention and advantages thereof will become apparent from the following detailed description of exemplary embodiments thereof, which proceeds with reference to the accompanying drawings.
Drawings
The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments of the invention and together with the description, serve to explain the principles of the invention.
FIG. 1 is a graph of the effect of the age structure of Sasa albo-marginata on reproduction rate.
Fig. 2 is a graph of the effect of the age structure of Sasa albo-marginata on the rate of biomass increase.
FIG. 3 is a graph showing the effect of the number of stock bamboo plants on the reproduction rate.
FIG. 4 is a graph showing the effect of the number of stock plants on biomass growth rate.
FIG. 5 is a graph showing the effect of breast diameter of mother bamboo on reproduction rate.
FIG. 6 is a graph showing the effect of breast diameter of mother bamboos on biomass growth rate.
FIG. 7 is a graph showing the effect of the density of the vertical bamboo on the reproduction rate.
FIG. 8 is a graph showing the effect of the density of vertical bamboo on the rate of biomass growth.
FIG. 9 is a graph showing the effect of nitrogen fertilizer application rate on reproduction rate.
FIG. 10 is a graph of the effect of nitrogen fertilizer application rate on biomass growth rate.
FIG. 11 is a graph showing the effect of phosphate fertilizer application rate on reproductive rate.
FIG. 12 is a graph showing the effect of applied amount of phosphate fertilizer on the rate of biomass growth.
FIG. 13 is a graph showing the effect of potassium fertilizer application rate on reproduction rate.
FIG. 14 is a graph showing the effect of potassium fertilizer application rate on biomass growth rate.
Detailed Description
Various exemplary embodiments of the present invention will now be described in detail with reference to the accompanying drawings. It should be noted that: the relative arrangement of the components and steps, the numerical expressions and numerical values set forth in these embodiments do not limit the scope of the present invention unless it is specifically stated otherwise.
The following description of at least one exemplary embodiment is merely illustrative in nature and is in no way intended to limit the invention, its application, or uses.
Techniques, methods, and apparatus known to one of ordinary skill in the relevant art may not be discussed in detail but are intended to be part of the specification where appropriate.
In all examples shown and discussed herein, any particular value should be construed as merely illustrative, and not limiting. Thus, other examples of the exemplary embodiments may have different values.
The cultivation method of the arrowhead comprises the following steps:
accurately regulating and controlling the structure of the Sagittaria sagittifolia:
(1) The number of the plants of the mother bamboos for maintenance is controlled to be 6-15 plants/bundle, the average diameter at breast height of the mother bamboos for maintenance is 4cm-5cm, and the mother bamboos for maintenance are all 1-3 year-old bamboo plants. The average breast diameter of the mother bamboos kept for breeding can be measured by adopting the following method: at 1.3m from the ground, measurements were made once each in the north-south and east-west directions using a vernier caliper or a breast caliper, and the average was taken. Keeping female bamboos is beneficial to ensuring the updating and breeding of new cizhu bamboos.
In specific implementation, the selection method of the mother bamboos for nursing can be as follows:
and (5) cutting the bamboo plants with the diseases and insect pests.
Reserving 6-15 bamboo plants which grow for 1-3 years and have the diameter at breast height of 4-5cm in the bamboo bush as mother bamboos for maintenance, and cutting the remaining 1-3-year-old bamboo plants in the bamboo bush. The number ratio of 1 year old bamboo plant to the rest bamboo plant in the mother bamboo can be (1-1.5): 1.
Further, the number ratio of 2-year-old bamboo plants to 3-year-old bamboo plants in the mother bamboos kept for breeding is 1:1.
(2) Controlling the ratio (quantity ratio) of 1-year-old bamboo plants in bamboo bush at 50-70% in the current year from 11 months to the next year by 1 month, and keeping the density of Sasa albo-marginata to be less than 12000 plants.hm -2 . The bamboo plants over 1 year can be harvested at the right time from 11 months in the current year to 1 month in the next year. In specific implementation, the density of the Sasa albo-marginata is 8000 strains hm -2 -10000 strains hm -2 。
Furthermore, the proportion of 1 year-old bamboo plants in the bamboo bush is 60-70%.
In specific implementation, the number ratio of 1-year-old bamboo plants, 2-year-old bamboo plants and 3-year-old bamboo plants in the bamboo bush can be (3.5-4): 1:1. Further, the number ratio of 1-year-old bamboo plants, 2-year-old bamboo plants and 3-year-old bamboo plants in the bamboo bush is 4.
When the proportion of 1-year-old bamboo plants in the bamboo bush is controlled, 4-year-old and 4-year-old bamboo plants are cut down.
Accurately regulating and controlling the nutrients of the Sagittaria sagittifolia:
fertilizing bamboo clumps 4-5 months per year before bamboo shoots appear, digging annular fertilizing ditches around the bamboo clumps, wherein the depth of the fertilizing ditches is 20cm-30cm, the distance between the fertilizing ditches and the bamboo clumps is 5cm-10cm, spreading fertilizer into the fertilizing ditches, and covering a soil layer of 5cm-10cm, wherein the application amount (pure nitrogen content) of the nitrogen fertilizer in the fertilizer is 181 kg-hm -2 -191kg·hm -2 Amount of phosphorus fertilizer applied (P) 2 O 5 Amount) of 8 kg. Hm -2 -22kg·hm -2 Potassium fertilizer application amount (K) 2 O amount) of 32 kg. Hm -2 -49kg·hm -2 。
In specific implementation, the application amount of the phosphate fertilizer can be 10kg hm -2 。
The experimental procedures used in the following examples are conventional unless otherwise specified, the materials and reagents used are commercially available unless otherwise specified, and the equipment used in the experiments are well known to those skilled in the art.
Experimentally, setting: the experimental plot is set by selecting sympodial bamboo forest with basically consistent standing conditions in the ancient river town of Chaning county, sichuan province.Wherein, the age structure, the number of the stock plants of the mother bamboos and the size of the mother bamboos are regulated and controlled by taking the clumps as units, 5 times of repetition is set for each structure type, and 100 clumps are selected in total. The age structure is set to 7 types, and 35 clumps are selected; setting 6 types of stock plants of the mother bamboos, and selecting 30 sample clusters; the mean breast diameter was 7 types, and 35 plexuses were selected. The rational density experiment was set up for 7 samples, with a standard of 10 × 10m for a total of 3 replicates, and 21 samples for a total of 21 samples. Each cluster bamboo in the sample plot is numbered, and each dried bamboo is marked by red lacquer. After the standard place is set, the basic conditions such as longitude, latitude, altitude, slope direction, slope position, gradient, operation condition and the like of each sample are investigated and recorded. The basic soil conditions of the Sasa Sagittifolia Linn land are as follows: soil volume weight 1.28g cm -3 pH value of 4.39 and organic matter content of 16.91 g/kg -1 The soil layer thickness is 65-75 cm, and the soil is moist.
Classifying according to the size of the breast diameter and one diameter grade of every 0.5cm, calculating a weighted average value of bamboo plants of each diameter grade as an average breast diameter, wherein the specific classification table is as follows:
TABLE 1 breast-height diameter grading table
The structural formula of age is S a ＝N 1 and/N, dimensionless. Wherein S is a Is age structure, N is the number of mother bamboos of 2 years and more than 2 years, N 1 The number of the mother bamboos is 1 year. For the convenience of data comparison and analysis, the Sagittaria sagittifolia age structure is divided into 6 levels according to different age structure values, and the specific corresponding values are shown in Table 2.
TABLE 2 age-Classification Table
Table 3 shows the number of stock bamboo plants.
TABLE 3 type of stock plant number of mother bamboo
Table 4 is a type of the density of the arrowbamboo.
TABLE 4 vertical bamboo Density types
On the basis of the orthogonal rotation combination design (table 5), different fertilizer application rates are encrypted (table 6). A total of 78 samples with a standard size of 10 × 10m were set. Wherein 11 nitrogen fertilizer applying treatments are arranged, each treatment is repeated for 3 times, and 33 sample plots are arranged in total; 8 phosphate fertilizer treatments are carried out, each treatment is repeated for 3 times, and 24 identical plots are arranged; the potash fertilizer treatment was 7, each treatment was repeated 3 times, and the total number of treatments was 21. Each cluster bamboo in the sample plot is numbered, and each dried bamboo is marked by red lacquer. After the standard place is set, the basic conditions such as longitude, latitude, altitude, slope direction, slope position, gradient, operation condition and the like of each sample are investigated and recorded. Sasa albo-marginata forest land soil basic condition: soil volume weight 1.28g cm -3 pH value of 4.39 and organic matter content of 16.91 g/kg -1 The soil layer thickness is 65-75 cm, and the soil is moist.
TABLE 5 coding table for Ciba fertilizing amount
TABLE 6 Ciba fertilizing amount table
Biomass survey: selecting 5 bamboo bundles which grow well and have no diseases and insect pests in the test forest as standard bamboo bundles for measuring biomass. And (4) extracting 16 Cihu bamboo plants with different ages and different breast diameters in the bamboo plexus as standard bamboos for test analysis. Sawing off selected bamboo plants from the stalk base, measuring the ground diameter, the breast diameter and the full length of the bamboo stalks after removing branches and leaves, then respectively taking down branches and leaves, and immediately measuring the fresh weights of the branches, the leaves and the stalks. Meanwhile, 500g of branches, leaves and stalks are taken respectively, taken back to a laboratory, placed in an oven at 85 ℃ and dried to constant weight, the dry weight is weighed after cooling, the water content is calculated, and the biomass of the whole plant is calculated. The biomass of the experimental bamboo clumps was obtained according to the age and breast diameter status of the sample clumps in the plots.
The formula of the reproduction rate is R = N s /N m And is dimensionless. Wherein R is the reproduction rate, N m Is the number of the parent bamboo plants, N s The number of finished bamboos.
Biomass growth rate formula B = B n /B o And is dimensionless. Wherein, B n For newly grown bamboo biomass, B o Is the mother bamboo biomass.
From fig. 1, a fitting function of the age structure and reproduction rate of Sasa albomarginata can be obtained: y = -0.0134x 2 +0.0816x+0.3641，R 2 ＝0.7842。
As can be seen from FIG. 1, the reproductive rate of Sasa albo-marginata changes in a downward parabolic shape with the age scale increasing, and the reproductive rate is highest at an age scale value of 0.5-1.5, which exceeds 0.52.
From fig. 2, a fit function of the arrowhead age structure to the biomass growth rate can be derived: y = -0.0172x 2 +0.1392x+0.1036，R 2 ＝0.8218。
As can be seen from FIG. 2, the biomass growth rate was changed in a parabolic manner with the opening facing downward, similarly to the growth rate, and the maximum biomass growth rate was 0.37 at an age-scale value of 2.0 to 2.5.
Comprehensively analyzing the relationship between the propagation rate and the biomass growth rate and the age structure, wherein the proportion of 1-year-old mother bamboos in bamboo clusters is 50-60%, and the number of new bamboo plants of Sasa albo-marginata is the largest; the proportion of 1 year old mother bamboo plant in bamboo cluster is 60-67%, and the biomass of new Sasa albo-marginata is larger.
From FIG. 3, a fitting function of the number of stock bamboo plants and the reproduction rate can be obtained: y = -0.0103x 2 +0.0615x+0.3931，R 2 ＝0.5587。
As can be seen from FIG. 3, the propagation rate of Sasa albo-marginata changes in a downward parabolic shape with the increase of the number of stock bamboo plants, and the propagation rate is higher than 0.50 when the number of stock bamboo plants is 6-15.
From fig. 4, a fitting function of the number of stock bamboo plants and biomass growth rate can be obtained: y = -0.0109x 2 +0.073x+0.2253，R 2 ＝0.732。
As can be seen from FIG. 4, the biomass growth rate varied in a parabolic manner with the opening downward, similar to the propagation rate, and exceeded 0.35 when the number of plants was 6 to 15.
Comprehensively analyzing the relationship between the reproduction rate and the biomass growth rate and the age structure, and when the number of the mother bamboo plants is 6-15, the highest reproduction rate and biomass growth rate are achieved.
The fitting function of the breast diameter and the reproduction rate of the mother bamboo can be obtained from the figure 5: y = -0.0869x 2 +0.8567x-1.5765，R 2 ＝0.9656。
As can be seen from FIG. 5, the propagation rate of Sasa albomarginata changes in a downward opening parabolic shape with the increase of the mean diameter grade of the mother bamboos, and the propagation rate is higher when the mean diameter at breast height is 4-5cm and is 0.55.
From fig. 6, a fitting function of the breast diameter and biomass growth rate of the mother bamboos for stocking can be obtained: y = -0.0643x 2 +0.6201x-1.1295，R 2 ＝0.7513。
As can be seen from FIG. 6, the biomass growth rate was similar to the growth rate, and varied in a parabolic manner with the opening facing downward, and the biomass growth rate was 0.37 when the average chest diameter was 5 to 6 cm.
Comprehensively analyzing the relationship between the reproduction rate and the biomass growth rate and the average breast diameter of the mother bamboos, wherein when the average breast diameter of the mother bamboos is 4-5cm, the Sagittaria trifoliata has the highest reproduction rate and biomass growth rate.
From fig. 7, a fitting function of the phyllostachys nigra density and the reproduction rate can be obtained: y =0.0039x 2 -0.0824x+0.7405，R 2 ＝0.7247。
As can be seen from FIG. 7, the propagation rate and biomass growth rate of Sasa albo-marginata decreased in a parabolic manner with the increase of the density of the Lizhu, wherein the density of the Lizhu is less than 8000 strains/hm 2 The highest forest stand reproduction rate is 0.70.
From fig. 8, a fitting function of the bamboo density and biomass growth rate can be obtained: y = -0.0032x 2 +0.0017x+0.4003，R 2 ＝0.6884。
As can be seen from FIG. 8, the growth rate of Ci bamboo biomass has the same trend as the propagation rate, and the density of the Lizhu bamboo is 8000-10000 strains/hm 2 The biomass growth rate of the strain is the highest and is 0.41, and then 10000-12000 strains/hm 2 The biomass growth rate of (2) was 0.39.
Comprehensively analyzing the relationship between the propagation rate and biomass growth rate and the density of the Phyllostachys nigra, wherein the reasonable density of the Phyllostachys nigra should be less than 12000 plants/hm 2 Further, the density of the vertical bamboo can be 8000-10000 strains/hm 2 。
From fig. 9, a fitting function of nitrogen application rate and reproduction rate can be derived: y = -8E-06x 2 +0.0029x+0.3384，R 2 ＝0.7056。
As can be seen from FIG. 9, the propagation rate of Sasa albo-marginata is in the trend of rising first and then falling along with the increase of the application amount of the nitrogen fertilizer, and when the application amount of the nitrogen fertilizer is 164.68 kg.hm -2 When the number of the cells is small, the highest reproduction rate is 0.69.
From fig. 10, a fitting function of the nitrogen fertilizer application rate and the biomass growth rate can be derived: y = -6E-06x 2 +0.0023x+0.2024，R 2 ＝0.6031。
As can be seen from FIG. 10, the biomass growth rate and the reproduction rate have a similar trend and a parabolic downward opening change, when the nitrogen fertilizer is applied at 225 kg. Hm -2 When the strain is used, the propagation rate is 0.55 at most.
Comprehensively analyzing the relationship between the propagation rate and the biomass growth rate and the application amount of the nitrogen fertilizer, wherein the application amount is 181-192 kg.hm -2 In addition, the Sasa albo-marginata has higher reproduction rate and biomass growth rate.
As can be seen from FIGS. 11 and 12, the growth rate of Sasa albo-marginata and the growth rate of biomass both tend to increase and decrease with the increase of the applied amount of phosphate fertilizer, when the applied amount of phosphate fertilizer is 10 kg.hm -2 When the growth rate and biomass growth rate reached maximum values, 0.65 and 0.75, respectively.
Comprehensively analyzing the relationship between the propagation rate and the biomass growth rate and the application amount of the phosphate fertilizer, wherein the application amount is 8-22 kg.hm -2 In addition, the Sasa albo-marginata has higher reproduction rate and biomass growth rate.
From fig. 13, a fit function of potash fertilizer application rate and reproduction rate can be derived: y = -0.0002x 2 +0.0129x+0.2638，R 2 ＝0.8926。
As can be seen from FIG. 13, the growth rate of Sasa albo-marginata changes in a parabolic shape with the downward opening as the amount of potassium fertilizer applied is increased, and when the amount of potassium fertilizer applied is 32.38 kg.hm -2 When the number of the seeds is small, the reproduction rate is 0.54 at most.
From fig. 14, a fitted function of potassium fertilizer application rate versus rate of biomass growth can be derived: y = -0.0001x 2 +0.0098x+0.1808，R 2 ＝0.8494。
As can be seen from FIG. 14, the biomass growth rate and the reproduction rate were similar and varied in a parabolic manner with the opening downward, when the potassium fertilizer was applied at 45 kg. Hm -2 When the number of the cells is small, the highest reproduction rate is 0.43.
Comprehensively analyzing the relationship between the propagation rate and the biomass growth rate and the application amount of the potash fertilizer, wherein the application amount is 32-49 kg.hm -2 When the method is used, the Sasa albo-marginata has higher reproduction rate and biomass growth rate.
Although some specific embodiments of the present invention have been described in detail by way of examples, it should be understood by those skilled in the art that the above examples are for illustrative purposes only and are not intended to limit the scope of the present invention. It will be appreciated by those skilled in the art that modifications may be made to the above embodiments without departing from the scope and spirit of the invention. The scope of the invention is defined by the appended claims.
Claims (1)
1. A method for cultivating Sagittaria sagittifolia is characterized by comprising the following steps:
controlling the number of the stock bamboo plants to be 6-15 plants/cluster, and controlling the average breast diameter of the stock bamboo to be 4-5cm, wherein the stock bamboo is a 1-3-year-old bamboo plant, the number ratio of the 1-year-old bamboo plant to the rest bamboo plants in the stock bamboo is (1-1.5): 1, and the number ratio of the 2-year-old bamboo plant to the 3-year-old bamboo plant in the stock bamboo is 1:1;
the selection method of the mother bamboos for keeping in good health comprises the following steps: cutting down the bamboo plants with diseases and insect pests;
reserving 6-15 bamboo plants which grow in 1-3 years in the bamboo bush and have the diameter at breast height of 4-5cm as mother bamboos for maintenance, and felling the remaining 1-3-year-old bamboo plants in the bamboo bush;
controlling the number ratio of 1-year-old bamboo plants, 2-year-old bamboo plants and 3-year-old bamboo plants in the bamboo bush to be 4 -2 -10000 strains hm -2 ；
Fertilizing bamboo clumps 4-5 months per year before bamboo shoots appear, digging annular fertilizing ditches around the bamboo clumps, wherein the depth of the fertilizing ditches is 20cm-30cm, the distance between the fertilizing ditches and the bamboo clumps is 5cm-10cm, spreading fertilizers into the fertilizing ditches, and covering soil layers of 5cm-10cm, wherein the application amount of nitrogen fertilizers in the fertilizers is 181 kg.hm -2 -192kg·hm -2 The dosage of the phosphate fertilizer is 10 kg.hm -2 The application amount of the potash fertilizer is 45 kg.hm -2 。
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| CN112868494A (en) * | 2021-01-14 | 2021-06-01 | 西南林业大学 | Method for felling sympodial bamboos |
| CN112772084A (en) * | 2021-02-05 | 2021-05-11 | 中国林业科学研究院亚热带林业研究所 | Reduced phyllostachys edulis fertilization method |
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| CN110583261B (en) * | 2019-10-12 | 2022-03-25 | 西南科技大学 | Method for planting Sasa sagittifolia by using biological fertilizer |
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