Forest land soil water retention and fertility increasing method

Abstract

The invention belongs to the technical field of microbial fertilizers, and particularly relates to a forest land soil water retention and fertility increasing method which is characterized by comprising the following steps: firstly, forming ditches with the depth of 20-30cm on the surface of soil according to the density of 1 / m < 2 > to 2 / m < 2 >, applying organic matters into the ditches, and covering the ditches with soil; mixing bacillus velezensis and the water-absorbing bamboo fiber material to obtain a mixture, and scattering the mixture on the surface of the forest land soil; the dosage of the organic matters put into each ditch is 79g / m < 2 >-719g / m < 2 >; wherein the weight part ratio of the bacillus velezensis to the water-absorbing bamboo fiber material is (1-50): (1-50); the use amount of the mixture scattered on the surface of the forest land soil is 23 g / m < 2 >-359 g / m < 2 >. An efficient, environment-friendly and sustainable soil improvement scheme is provided for forestry production, sustainable development of forestry is promoted, the bamboo shoot yield is increased, and the productivity and stability of a forest ecological system are improved.

Description

TECHNICAL FIELD

[0001] The application belongs to the technical field of microbial fertilizer, and particularly relates to a method for water retention and fertilizer increase of forest soil. BACKGROUND

[0002] Soil fertility and water storage capacity directly affect the growth rate and yield of forest trees. With the continuous development and utilization of forestry resources, and the intensification of global climate change, forest soil is facing unprecedented challenges. Land desertification is one of the serious environmental problems currently faced by the world, which seriously threatens the sustainable use of land resources and the stability of the ecological system. Desertification not only leads to a decline in land productivity, but also exacerbates water shortages and ecological degradation, posing a serious threat to the sustainable management of forest land. Therefore, developing a method for water retention and fertilizer increase of forest land is of great significance for preventing and controlling land desertification and improving forest soil quality. SUMMARY

[0003] To solve the above problems, the application provides a method for water retention and fertilizer increase of forest soil, which is used for soil improvement and optimization of forest growth conditions.

[0004] The application is implemented by the following technical solutions: A method for water retention and fertilizer increase of forest soil, comprising the following steps: First, a ditch with a depth of 20cm~30cm is opened on the soil surface at a density of 1 / m 2 ~2 / m 2 , and organic matter is applied in the ditch and then covered with soil; then Bacillus velezensis and water-absorbing bamboo fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil; the amount of organic matter put in each ditch is 79g / m 2 ~719g / m 2 .

[0005] The weight ratio of the Bacillus velezensis and the water-absorbing bamboo fiber material is 1~50:1~50.

[0006] The amount of the mixture scattered on the surface of the forest soil is 23g / m 2 ~359g / m 2 .

[0007] Preferably, the weight ratio of the Bacillus velezensis and the water-absorbing bamboo fiber material is 1~15:2~30.

[0008] Preferably, the water-absorbing bamboo fiber is a water-absorbing Dendrocalamus latiflorus fiber material.

[0009] Preferably, the preparation method of the water-absorbing Dendrocalamus latiflorus fiber material comprises the following steps: The bamboo shoots grown for 250-350 days are washed and ground into bamboo powder with a mesh size of 75-85.

[0010] The bamboo shoots grown for 250-350 days are washed and ground into bamboo powder with a mesh size of 75-85.

[0011] The bamboo shoots grown for 250-350 days are washed and ground into bamboo powder with a mesh size of 75-85. 8 CFU / g~1×10 9 CFU / g.

[0012] Preferably, the organic matter is the bamboo leaves after composting.

[0013] Preferably, the composting is carried out under the conditions of 50-60% humidity for 60-70 days.

[0014] Preferably, the soil is kept under the following conditions before the organic matter is put in: the water content of the soil is kept at 40-50%, the pH value of the soil is 6-8, and the temperature of the soil is kept at 20-25 DEG C.

[0015] Compared with the prior art, the present application has the following beneficial effects: The present application provides a method for water retention and soil fertilization in a forest soil, which comprises the following steps: first, grooves with a depth of 20-30 cm are dug on the surface of the soil at a density of 1 / m 2 ~2 / m 2 , and then the grooves are filled with organic matter and covered; second, Bacillus velezensis and water-absorbing bamboo fiber material are mixed to obtain a mixture, and the mixture is then scattered on the surface of the forest soil; and third, the amount of the organic matter put in each groove is 79 g / m 2 ~719 g / m 2 ; wherein the weight ratio of the Bacillus velezensis to the water-absorbing bamboo fiber material is 1-50:1-50, and the amount of the mixture scattered on the surface of the forest soil is 23 g / m 2 ~359 g / m 2The method for water retention and soil fertilization of forest land provided by the application uses the special microbial fertilizer for forest land made of bacillus velezensis and water-absorbing bamboo fiber, applies the special microbial fertilizer for forest land on the soil where the forest grows, and puts organic matter in the soil to optimize the growth conditions of the forest. The method for water retention and soil fertilization of forest land provided by the application considers the new material level, the microbial level and the field biological relationship level, and uses bacillus velezensis, water-absorbing bamboo fiber material and organic matter for the first time, which provides a theoretical basis and a practical feasible way for rhizosphere microecological improvement, soil remediation and desertification control. Experiments prove that the method increases the yield of bamboo shoots in forest land by 7.2% to 61%, and has important ecological value and social value.

[0016] In addition, through repeated laboratory research and field tests, it is found that the combination of bacillus velezensis, water-absorbing bamboo fiber material and organic matter has good promotion effect, low cost and other advantages, and does not pollute the environment, so it is suitable for wide application. BRIEF DESCRIPTION OF DRAWINGS

[0017] In order to more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only some embodiments of the present application, and for those skilled in the art, other drawings can be obtained without creative labor on the basis of these drawings.

[0018] Figure 1 Field map after application of bacillus velezensis, water-absorbing bamboo fiber material and organic matter of the present application.

[0019] Figure 2 Field map of the control area of the present application. DETAILED DESCRIPTION

[0020] In order to facilitate the understanding of the present application, the present application will be described more fully below, and the preferred embodiments of the present application are given. However, the present application can be realized in many different forms, and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0021] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which the present application belongs. The terms used in the specification of the present application herein are only for the purpose of describing specific embodiments and are not intended to limit the present application.

[0022] The bacillus velezensis used in the present application is disclosed in the document "Long W, Yu J, Xiao M, et al. Effect of rhizosphere micro-ecological growth system based on bamboo fiber polymer materials on the growth of Baiye No. 1 [J]. Forestry Science and Technology, 2023, 48(05): 9-13+43."

[0023] Example 1 A method for water retention and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder, content 1×10 9 CFU / g, provided by Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0024] (2) Preparation of water-absorbing bamboo fiber material Take the bamboo stem of Dendrocalamus latiflorus grown for 250 days in the bamboo base of Yongfu Town, Muchuan County, Sichuan Province as the material, wash it with tap water, grind it into fine bamboo powder with a fineness of 75 mesh, and treat it with a microwave with a power of 550 W at a temperature of 75 ℃ for 35 minutes to realize the directional modification of bamboo fiber and obtain the water-absorbing bamboo fiber material.

[0025] (3) Organic matter The rotten bamboo leaves provided by the Key Laboratory of Bamboo Pest Control and Resource Development are used as the organic matter. Fresh and pest-free bamboo leaves are selected, impurities and large branches are removed, and then cut into small pieces. After fermentation for 60 days under the condition of humidity of 50%, the organic matter is obtained.

[0026] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120m 2 . The test land is divided into 6 areas, wherein the test treatment area is 20m 2 , repeated 3 times; the control area is 20m 2 , repeated 3 times.

[0027] Open a 30cm deep ditch every 1 / m 2 on the surface of the soil, and keep the soil moisture content at 40%; the pH value of the soil is 6; the temperature of the soil is 20℃, and the organic matter is applied after covering the soil; the bacillus velezensis and the water-absorbing bamboo fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 385.28g / m 2 , and the weight ratio of the bacillus velezensis and the water-absorbing bamboo fiber material is 15:30. The amount of the organic matter is 716.56g / m 2 . In the control area, only 1074.84g / m 2 of organic matter is used in each area, and no other materials are used. Each area is watered with 100kg to keep the soil moist to ensure that the suitable living environment is achieved.Figure 1 A field map after applying the bacillus velezensis, the water-absorbing Dendrocalamus latiflorus fiber material and the organic matter. Figure 2 A field map of a control area.

[0028] The bamboo shoot yield was measured, and the results showed that, compared with the control, the bamboo shoot yield in the area using the method for water retention and fertilizer increase of forest soil was obviously increased by 61%.

[0029] Example 2 A method for water retention and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis The bacillus velezensis powder has a content of 1×10 9 CFU / g, which is provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0030] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material The Dendrocalamus latiflorus stems grown for 250 days in the bamboo sea base of Yongfu Town in Muchuan were used as materials, washed with tap water, and ground into fine bamboo powder with a fineness of 75 meshes. The bamboo fiber was directionally modified by microwave treatment at a power of 550 W and a temperature of 75℃ for 35 minutes, and the water-absorbing Dendrocalamus latiflorus fiber material was obtained.

[0031] (3) Organic matter The rotten Dendrocalamus latiflorus leaves provided by the Key Laboratory of Bamboo Pest Control and Resource Development were used as the organic matter. Fresh and pest-free Dendrocalamus latiflorus leaves were cut into small pieces after removing impurities and large branches, and fermented for 60 days under the condition of 50% humidity to obtain the organic matter.

[0032] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120m 2 . The test land is divided into 6 areas, of which the test treatment area is 20m 2 , repeated 3 times; the control area is 20m 2 , repeated 3 times.

[0033] A 30cm deep ditch was opened on the surface of the soil every 1m 2 , and the soil moisture content was maintained at 40%; the pH value of the soil was 6; the soil temperature was 20℃, and the organic matter was applied after covering the soil; the bacillus velezensis and the water-absorbing Dendrocalamus latiflorus fiber material were mixed to obtain a mixture, and the mixture was scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 385.28g / m 2 , and the weight ratio of the bacillus velezensis to the water-absorbing Dendrocalamus latiflorus fiber material is 15:30. The amount of the organic matter is 79.62g / m 2 . In each area of the control area, only 437.9g / m 2No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure the suitable living environment is reached.

[0034] The bamboo shoot yield is determined. The results show that, compared with the control, the bamboo shoot yield in the area using the method for water conservation and fertilizer increase of forest soil is obviously increased by 34.3%.

[0035] Example 3 A method for water conservation and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 9 CFU / g is provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0036] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material The Dendrocalamus latiflorus stems grown for 250 days in the bamboo base of Yongfu Town, Muchuan County are used as the material. After being washed with tap water, the stems are ground into fine bamboo powder with a fineness of 75 meshes. The bamboo fiber is directionally modified by microwave treatment at a temperature of 75℃ for 35 minutes with a microwave power of 550W, and the water-absorbing Dendrocalamus latiflorus fiber material is obtained.

[0037] (3) Organic matter The rotten Dendrocalamus latiflorus leaves provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development are used as the organic matter. Fresh and pest-free Dendrocalamus latiflorus leaves are cut into small pieces after impurities and large branches are removed, and are fermented for 60 days under the condition of a humidity of 50% to obtain the organic matter.

[0038] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; and the area of the test land is 120m 2 . The test land is divided into six areas, wherein the test treatment area is 20m 2 , repeated three times; and the control area is 20m 2 , repeated three times.

[0039] A 30cm-deep ditch is formed on the surface of the soil every 1m 2 , and the soil moisture content is kept at 40%; the pH value of the soil is 6; and the soil temperature is kept at 20℃ after the organic matter is applied and the soil is covered; the Bacillus velezensis and the water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 135.35g / m 2 , and the weight ratio of the Bacillus velezensis to the water-absorbing Dendrocalamus latiflorus fiber material is 15:2. The amount of the organic matter is 716.56g / m 2 . Only the organic matter 851.91g / m 2No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure the suitable living environment is reached.

[0040] The bamboo shoot yield is determined. The results show that, compared with the control, the bamboo shoot yield in the area using the method for water retention and fertilizer increase of forest soil is obviously increased by 39.5%.

[0041] Example 4 A method for water retention and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 9 CFU / g is provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0042] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material The Dendrocalamus latiflorus stem grown for 300 days in the bamboo base of Yongfu Town, Muchuan County is used as the material. After being washed with tap water, the bamboo stem is ground into fine bamboo powder with a fineness of 80 meshes. The bamboo fiber is directionally modified by microwave treatment at a temperature of 80℃ for 40 minutes with a microwave power of 600W, and the water-absorbing Dendrocalamus latiflorus fiber material is obtained.

[0043] (3) Organic matter The rotten Dendrocalamus latiflorus leaves provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development are used as the organic matter. Fresh and pest-free Dendrocalamus latiflorus leaves are cut into small pieces after impurities and large branches are removed, and are fermented for 65 days under the condition of humidity of 55% to obtain the organic matter.

[0044] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; and the area of the test land is 120m 2 . The test land is divided into six areas, wherein the test treatment area is 20m 2 , repeated three times; and the control area is 20m 2 , repeated three times.

[0045] A 30cm-deep ditch is dug on the surface of the soil every 1m 2 , and the soil moisture content is kept at 45%; the pH value of the soil is 7; and the soil temperature is kept at 23℃ after the organic matter is applied and the soil is covered; the Bacillus velezensis and the water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 135.35g / m 2 , and the weight ratio of the Bacillus velezensis to the water-absorbing Dendrocalamus latiflorus fiber material is 15:2. The amount of the organic matter is 79.62g / m 2 . Only the organic matter 214.97g / m 2 is used in each area of the control area.No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure a suitable living environment.

[0046] The bamboo shoot yield is determined. The results show that, compared with the control, the bamboo shoot yield in the area using the method for water retention and fertilizer increase of forest soil is obviously increased by 24%.

[0047] Example 5 A method for water retention and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 8 CFU / g, provided by the Sichuan Provincial Key Laboratory of Bamboo Pest Control and Resource Development.

[0048] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material The Dendrocalamus latiflorus stems grown for 300 days in the bamboo base of Yongfu Town in Muchuan County are used as materials. After being washed with tap water, the fine bamboo powder with a fineness of 80 meshes is obtained. The bamboo fiber is directionally modified by microwave treatment at a temperature of 80℃ for 40 minutes with a power of 600W, and the water-absorbing Dendrocalamus latiflorus fiber material is obtained.

[0049] (3) Organic matter The rotten Dendrocalamus latiflorus leaves provided by the Key Laboratory of Bamboo Pest Control and Resource Development are used. Fresh and pest-free Dendrocalamus latiflorus leaves are cut into small pieces after removing impurities and large branches. The organic matter is obtained by fermenting under the condition of humidity of 55% for 65 days.

[0050] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120m 2 . The test land is divided into 6 areas, wherein the test treatment area is 20m 2 , repeated 3 times; the control area is 20m 2 , repeated 3 times.

[0051] A 30cm deep ditch is dug on the surface of the soil every 1m 2 , and the soil moisture content is kept at 45%; the pH value of the soil is 7; the soil temperature is 23℃, and the organic matter is applied after covering the soil; Bacillus velezensis and water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 246.81g / m 2 , and the weight ratio of Bacillus velezensis to water-absorbing Dendrocalamus latiflorus fiber material is 1:30. The amount of the organic matter is 716.56g / m 2 . In the control area, only 963.37g / m 2No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure the suitable living environment is reached.

[0052] The bamboo shoot yield is determined. The results show that, compared with the control, the bamboo shoot yield in the area using the method for water conservation and fertilizer increase of forest soil is obviously increased by 18.6%.

[0053] Example 6 A method for water conservation and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 8 CFU / g is provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0054] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material After the 300-day-old Dendrocalamus latiflorus stems in the bamboo base of Yongfu Town in Muchuan are washed with tap water, they are ground into fine bamboo powder with a fineness of 80 meshes. The bamboo fiber is directionally modified by microwave treatment at a temperature of 80℃ for 40 minutes with a microwave power of 600W, and the water-absorbing Dendrocalamus latiflorus fiber material is obtained.

[0055] (3) Organic matter The rotten Dendrocalamus latiflorus leaves are provided by the Key Laboratory of Bamboo Pest Control and Resource Development. Fresh and pest-free Dendrocalamus latiflorus leaves are cut into small pieces after impurities and large branches are removed, and are fermented for 65 days under the condition of humidity of 55% to obtain the organic matter.

[0056] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120m 2 . The test land is divided into six areas, wherein the test treatment area is 20m 2 , repeated three times; the control area is 20m 2 , repeated three times.

[0057] A 30cm-deep ditch is opened on the surface of the soil every 1m 2 , and the soil moisture content is kept at 45%; the pH value of the soil is 7; the soil temperature is 23℃, and the organic matter is applied and covered after application; Bacillus velezensis and water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 246.81g / m 2 , and the weight ratio of Bacillus velezensis to water-absorbing Dendrocalamus latiflorus fiber material is 1:30. The amount of the organic matter is 79.62g / m 2 . Only the organic matter 326.43g / m 2 is used in each area of the control area.No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure a suitable living environment.

[0058] The bamboo shoot yield is determined. The results show that, compared with the control, the bamboo shoot yield of the area using the method for water retention and fertilizer increase of forest soil is obviously increased by 12%.

[0059] Example 7 A method for water retention and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 8 CFU / g, provided by the Sichuan Provincial Key Laboratory of Bamboo Pest Control and Resource Development.

[0060] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material Take the Dendrocalamus latiflorus stems grown in the bamboo base of Yongfu Town, Muchuan County for 350 days as the material, wash them with tap water, grind them into fine bamboo powder with a fineness of 85 meshes, and treat them with a microwave with a power of 650 W at a temperature of 85 ℃ for 45 minutes to realize directional modification of the bamboo fiber and obtain the water-absorbing Dendrocalamus latiflorus fiber material.

[0061] (3) Organic matter The rotten Dendrocalamus latiflorus leaves are provided by the Key Laboratory of Bamboo Pest Control and Resource Development. Fresh and pest-free Dendrocalamus latiflorus leaves are selected, impurities and larger branches are removed, and then cut into small pieces. After fermentation for 70 days under the condition of 60% humidity, the organic matter is obtained.

[0062] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120 m 2 . The test land is divided into six areas, of which the test treatment area is 20 m 2 , repeated three times; the control area is 20 m 2 , repeated three times.

[0063] A 30 cm deep ditch is opened on the surface of the soil every 1 m 2 , and the soil moisture content is kept at 50%; the pH value of the soil is 8; the soil temperature is 25 ℃, and the organic matter is applied after covering the soil; Bacillus velezensis and water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 23.88 g / m 2 , and the weight ratio of Bacillus velezensis to water-absorbing Dendrocalamus latiflorus fiber material is 1:2. The amount of the organic matter is 716.56 g / m 2 . Only 740.44 g / m 2 of organic matter is used in each area of the control area.No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure the appropriate living environment is reached.

[0064] The bamboo shoot yield was determined. The results show that, compared with the control, the bamboo shoot yield in the area using the method for water retention and fertilizer increase of forest soil is obviously increased by 12.6%.

[0065] Example 8 A method for water retention and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 8 CFU / g, provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0066] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material The Dendrocalamus latiflorus stems grown for 350 days in the bamboo base of Yongfu Town in Muchuan were washed with tap water, ground into fine bamboo powder with a fineness of 85 mesh, and treated with a microwave with a power of 650 W at a temperature of 85℃ for 45 minutes to realize directional modification of the bamboo fiber and obtain the water-absorbing Dendrocalamus latiflorus fiber material.

[0067] (3) Organic matter The rotten Dendrocalamus latiflorus leaves were provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development. Fresh and pest-free Dendrocalamus latiflorus leaves were cut into small pieces after removing impurities and large branches, and fermented for 70 days under the condition of 60% humidity to obtain the organic matter.

[0068] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120m 2 . The test land is divided into 6 areas, of which the test treatment area is 20m 2 , repeated 3 times; the control area is 20m 2 , repeated 3 times.

[0069] A 30cm deep ditch is opened on the surface of the soil every 1m 2 , and the soil moisture content is kept at 50%; the pH value of the soil is 8; the soil temperature is 25℃, and the organic matter is applied after covering the soil; Bacillus velezensis and water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 23.88g / m 2 , and the weight ratio of Bacillus velezensis to water-absorbing Dendrocalamus latiflorus fiber material is 1:2. The amount of the organic matter is 79.62g / m 2 . Only 103.5g / m 2No other material is used. Each area is watered with 100 kg to keep the soil moist to ensure a suitable living environment.

[0070] The bamboo shoot yield is determined. The results show that, compared with the control, the bamboo shoot yield of the area using the method for water conservation and fertilizer increase of forest soil is obviously increased by 7.2%.

[0071] Example 9 A method for water conservation and fertilizer increase of forest soil Raw material preparation: (1) Bacillus velezensis Bacillus velezensis powder with a content of 1×10 8 CFU / g, provided by the Sichuan Key Laboratory of Bamboo Pest Control and Resource Development.

[0072] (2) Preparation of water-absorbing Dendrocalamus latiflorus fiber material The Dendrocalamus latiflorus stem grown for 350 days in the bamboo base of Yongfu Town, Muchuan County is used as the material. After being washed with tap water, the bamboo powder with a fineness of 85 meshes is obtained. The bamboo fiber is directionally modified by microwave treatment at a temperature of 85℃ for 45 minutes with a power of 650W, and the water-absorbing Dendrocalamus latiflorus fiber material is obtained.

[0073] (3) Organic matter The rotten Dendrocalamus latiflorus leaves provided by the Key Laboratory of Bamboo Pest Control and Resource Development are used as the organic matter. The fresh and pest-free Dendrocalamus latiflorus leaves are cut into small pieces after removing impurities and large branches, and fermented for 70 days under the condition of humidity of 60% to obtain the organic matter.

[0074] The soil of the test land is in Muchuan County, Leshan City, Sichuan Province; the area of the test land is 120m 2 . The test land is divided into six areas, wherein the test treatment area is 20m 2 , repeated three times; the control area is 20m 2 , repeated three times.

[0075] A 30cm deep ditch is opened on the surface of the soil every 1m 2 , and the soil moisture content is kept at 50%; the pH value of the soil is 8; the soil temperature is kept at 25℃, and the organic matter is applied and covered after application; the Bacillus velezensis and the water-absorbing Dendrocalamus latiflorus fiber material are mixed to obtain a mixture, and the mixture is scattered on the surface of the forest soil. The amount of the mixture scattered on the surface of the forest soil is 191.08g / m 2 , and the weight ratio of the Bacillus velezensis and the water-absorbing Dendrocalamus latiflorus fiber material is 8:16. The amount of the organic matter is 398.09g / m 2 . Only the organic matter 589.17g / m 2No other material is used. Each area is watered with 100 kg, keeping the soil moist to ensure that the suitable living environment is reached.

[0076] The bamboo shoot yield is determined, and the results show that, compared with the control, the bamboo shoot yield in the area using the method for improving the water retention and fertilization of forest soil is obviously increased by 29.2%.

[0077] From the above results, it can be seen that the method for improving the water retention and fertilization of forest soil adopted in the present application has achieved remarkable results, and has successfully increased the bamboo shoot yield in the test treatment area. Compared with the control area, the bamboo shoot yield increase rate in the different treatment areas all exceeds 5%.

[0078] From the above results, it can be seen that the three materials of bacillus velezensis, water-absorbing bamboo fiber and organic matter each play a unique and significant role in the bamboo shoot yield increase rate. The increase in bamboo shoot yield is related to bacillus velezensis, water-absorbing bamboo fiber and organic matter, and the combined use of the three materials can further improve the bamboo shoot yield, providing a new idea and method for improving the water retention and fertilization capacity of forest soil.

[0079] In summary, the method for improving the water retention and fertilization of forest soil provided in the present application uses bacillus velezensis, water-absorbing bamboo fiber material and organic matter as three components, and through repeated laboratory research and field tests, it is found that the three components have the advantages of good effect, low cost and no environmental pollution for improving the water retention and fertilization capacity of forest soil, and provide an efficient, environmentally friendly and sustainable soil improvement scheme for forestry production, which helps to promote the sustainable development of forestry and improve the productivity and stability of the forest ecosystem.

[0080] The technical features of the above-described embodiments can be combined in any manner. To make the description concise, all possible combinations of the technical features in the above-described embodiments are not described, but as long as the combinations of the technical features do not contradict each other, they should be considered as within the scope of the present disclosure.

[0081] The above-described embodiments only express several embodiments of the present application, and the description is more specific and detailed, but it should not be understood as limiting the scope of the patent. It should be noted that for ordinary skilled persons in the art, without departing from the concept of the present application, some modifications and improvements can be made, which are within the scope of the present application. Therefore, the protection scope of the present application patent should be subject to the appended claims.

Claims

1. A method for retaining water and increasing fertility in forest soil, characterized in that: The steps include: First, press 1 / m on the soil surface. 2 ~2 pieces / m 2 Dig a trench with a depth of 20cm~30cm, add organic matter into the trench and cover with soil; Bacillus velezensis and water-absorbing bamboo fiber materials were mixed to obtain a mixture, which was then spread on the surface of the forest soil; the amount of organic matter put into each trench was 79g / m 2 ~719g / m 2 ; Wherein, the weight ratio of the Bacillus Velez and the water-absorbing bamboo fiber material is 1-50:1-50; The amount of the mixture spread on the surface of the forest soil is 23g / m 2 ~359g / m 2 .

2. The method according to claim 1, characterized in that The weight ratio of the Bacillus Velez and the water-absorbing bamboo fiber material is 1-15:2-30.

3. The method according to claim 1, characterized in that The water-absorbing bamboo fiber is a water-absorbing hemp bamboo fiber material.

4. The method according to claim 3, characterized in that The preparation method of the water-absorbing bamboo fiber material comprises the following steps: Use 250-350-day-old bamboo stems as the material, clean them, and grind them into 75-85 mesh bamboo powder; The water-absorbing bamboo fiber material is processed by microwave with a power of 550W to 650W and a temperature of 75°C to 85°C for 35 minutes to 45 minutes.

5. The method according to claim 1, wherein The Velez Bacillus is Velez Bacillus powder, and the concentration of live bacteria in the powder is 1×10 8 CFU / g~1×10 9 CFU / g.

6. The method according to claim 1, characterized in that The organic matter is the composted bamboo leaves.

7. The method according to claim 6, characterized in that The composting treatment is carried out under the condition of humidity of 50% to 60% for fermentation for 60 to 70 days.

8. The method according to claim 1, characterized in that Before adding organic matter, the soil should maintain the following conditions: the soil moisture content is maintained at 40% to 50%; the soil pH value is maintained at 6 to 8; and the soil temperature is maintained at 20°C to 25°C.

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