Disclosure of Invention
Aiming at the defects, the invention provides a composite management method for planting the lemongrass in the leaf moringa oleifera forest, which realizes the efficient and intensive utilization of land, relieves the influence of shortage of land resources on the development of moringa oleifera and lemongrass industries and enriches the excellent modes of composite agriculture and forestry in China.
The invention is realized by adopting the following technical scheme:
a compound management method for planting lemongrass in leaf moringa oleifera forests comprises the following measures:
(1) selecting a forest land:
selecting a forest land with high temperature, rain, sufficient sunlight, good drainage and fertile soil, having no severe frost and cold damage weather all the year round, wherein the annual average rainfall is between 800 and 1800mm, the elevation of the forest land is below 600m, the gradient is less than or equal to 20 degrees, the soil is neutral or weakly acidic, and the content of gravels in the soil is less than or equal to 10 percent;
(2) land preparation of forest land:
when the slope of the forest land is less than 10 degrees, performing full-reclamation land preparation, and when the slope of the forest land is more than or equal to 10 degrees and less than or equal to 20 degrees, performing terrace-type belt land preparation; the soil digging depth is more than or equal to 25cm, ridges form a horizontal ridge surface with the width of 1.5-2 m and the height of 10-15 cm, the ridge surface is finely raked after mixing 1000 kg/mu of organic fertilizer with soil, and drainage channels are smoothly drained at two sides of the ridge; opening a moringa planting ditch with the width of 5-8 cm and the depth of 6-7 cm at the ridge surface which is 10cm away from the upper drainage ditch; digging a lemongrass sowing ditch with the row spacing of 35cm, the width of 3-4 cm and the depth of 2-3 cm in a ridge surface strip-shaped area which is 10cm away from the lower drainage ditch and 50cm away from the moringa oleifera planting ditch;
(3) planting:
sowing and planting moringa oleifera and citronella grass in 3-4 months; dibbling 2-3 moringa seeds subjected to seed treatment in a moringa planting ditch every 50cm, covering soil for 4-6 cm, and compacting; mixing fine soil or plant ash into the lemongrass seeds according to the seed amount of 1.8-2 kg/mu, then sowing the mixture into a lemongrass sowing ditch, and covering 1-2 cm of soil;
(4) forest management and protection:
after the moringa seeds germinate for 15 days, combining ridging to remove weeds and carrying out uniform seeding and replanting; after the moringa seeds germinate for 30 days, spraying a leaching compound fertilizer with the effective nutrient content of nitrogen, phosphorus and potassium of more than or equal to 35 percent after raining in combination with weeding, wherein the fertilizing amount is 15 kg/mu; carrying out artificial weeding when weeds grow by 30-50 cm, and topdressing 200kg after each weeding, wherein the fertilizer used for topdressing is obtained by uniformly mixing 500 parts by weight of human and animal manure, 100 parts by weight of fine soil, 35 parts by weight of urea and 10 parts by weight of orange peel water extract and then fermenting for 2 days;
(5) pruning and shaping:
when the height of the moringa oleifera is 50m, cutting off a trunk from a position of 30cm, leaving 3-4 first-level branches after germination, then cutting off from a position of 50cm when the moringa oleifera grows to 70cm, leaving 10-15 second-level branches, then cutting off from a position of 65cm when the moringa oleifera grows to 90cm, and leaving 20-30 third-level branches; supplementing fertilizer in time according to the growth condition of the branches and leaves of the moringa oleifera, and keeping the whole plant height of the moringa oleifera to be 65-70 cm after the leaves are picked for the last time in winter every year;
(6) harvesting and processing:
collecting tender hearts 10-15 cm from the top of the buds of the second-level branches and the third-level branches of the moringa oleifera to be used as vegetables; collecting moringa oleifera mature leaves, namely breaking off the whole branches from the leaf stalks, drying in the air and shaking off the leaves, wherein the collected moringa oleifera mature leaves can be dried to be made into tea or deeply processed; harvesting the cedronella inflorescences after the cedronella inflorescences are half-cooked, spreading, and drying in the sun for later use.
Further, the organic fertilizer in the step (2) is prepared from the following raw materials in parts by weight: 30-35 parts of pig manure, 20-25 parts of peanut shell, 10-15 parts of phosphorus tailings, 15 parts of cassava residue, 5-8 parts of urea, 6-9 parts of orange peel water extract, 5-7 parts of grape peel water extract, 8-10 parts of bacillus subtilis, 4-5 parts of lactobacillus plantarum and 5-6 parts of bacillus fibrosus; the preparation method of the organic fertilizer comprises the steps of mixing pig manure, peanut shells, phosphorus tailings, manioc wastes and urea, spraying a mixed solution of orange peel water extract, grape peel water extract, bacillus subtilis, lactobacillus plantarum and cellulose bacillus while turning over, putting the mixture into a fermentation tank or a fermentation tank for fermentation after uniformly mixing, controlling the fermentation temperature to be 36-38 ℃, and fermenting for 15 days to obtain the organic fertilizer.
Further, the water extract of orange peel in the step (2) and the step (4) is prepared by mixing and decocting orange peel and water according to the mass ratio of 1:5 for 1 hour, and filtering to obtain filtrate to obtain the water extract of orange peel; and (3) mixing the grape skin and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate to obtain the grape skin water extract.
Further, the seed treatment in the step (3) is to soak the moringa seeds for 1 hour by using a potassium permanganate solution with the mass concentration of 0.2%, to take out and wash the moringa seeds, to soak the moringa seeds in warm water at 65 ℃, to change water for 1 time every 4 hours, to take out and to prepare for sowing after soaking for 12 hours.
Compared with the prior art, the technical scheme has the following beneficial effects:
1. the organic fertilizer is prepared by fermenting pig manure, peanut shells, phosphate tailings, cassava dregs and the like serving as main raw materials, wherein the content of N, P, Ca in the pig manure is high, 80.1% of dry matters of the pig manure is organic matters, the content of easily degradable organic carbon is 27.3%, the contents of hemicellulose and cellulose are low, the contents of crude fat and lignin are high, and components capable of being utilized by crops in the manure account for about 70%, so that the organic fertilizer has high utilization value as the organic fertilizer. The compound microbial inoculum of bacillus subtilis, lactobacillus plantarum and bacillus fibrosus is used, pig manure, peanut shells, phosphate tailings and cassava residues can be effectively decomposed, a large amount of organic matters and inorganic matters such as carbon elements, nitrogen elements, potassium elements and phosphorus elements can be released, and researches show that the organic matter content in the obtained organic fertilizer can reach 25-34%, the inorganic matter content can reach 20-37%, the quick-acting phosphorus content can reach 3.9-5.1 mg/kg, and the amino acid content can reach more than 26.1%.
2. The added orange peel water extract contains a large amount of oxalic acid, anthocyanin, tartaric acid and other components, the activity of stably activated phosphorus ions can be enhanced, the oxidation resistance is enhanced, the grape peel water extract contains tartaric acid, oxalic acid, pyruvic acid and anthocyanin, the hydroxyl radical scavenging capability is realized, the better oxidation resistance is realized, the combination of the two extracts can achieve the effects of synergy and dual guarantee, and the growth of the lemongrass is promoted.
3. The content of crude fiber in the peanut shell reaches more than 60%, the water absorption is strong, the air permeability is good, and the organic fertilizer prepared by mixing and fermenting the peanut shell and pig manure can make the soil soft and not hardened, so that the soil structure is effectively protected. The prepared organic fertilizer can further ferment soil, so that the soil has the functions of water storage, moisture preservation and fertilizer storage like solid organic fertilizer, more sufficient fertilizer, water and nutrient are provided for normal growth of the moringa oleifera and the lemongrass, and the soil microbial community structure of the soil can be improved.
4. Because the existence of a large amount of gravels in the soil can influence the physical characteristics of the soil, such as the volume weight of the soil, the porosity of the soil, the temperature of the soil, the water content of the soil and the like, and even the infiltration characteristic of the soil, and further influence the root development and the water and fertilizer absorption of plants, the invention selects the forest land with the soil gravel content less than or equal to 10 percent to be suitable for planting the moringa oleifera and the lemongrass when selecting the forest land.
5. In the process of planting the lemongrass in the moringa oleifera forest, the invention can replace and foster the cultivation, and the soil structure is improved, the nutrient content is improved and the growth of the moringa oleifera is obviously improved by taking measures of artificial weeding, soil turning, soil preparation, fertilization and the like. Meanwhile, after the lemongrass is planted, the biological diversity is improved, the forest stand space structure is optimized, the ecological environment of the moringa oleifera pure forest is effectively improved, and the product output and variety are increased. Therefore, the popularization and the application of the technology can effectively improve the ecological economic benefit of the land in unit area.
6. Through measures of tree height control, pruning and shaping, leaf picking and the like of the moringa oleifera, favorable illumination, space and nutrient requirements are provided for growth of the lemongrass in the moringa oleifera forest, the lemongrass can normally grow, and compared with single action of the lemongrass in a field, the yield per unit area has no obvious difference. Therefore, the popularization and the application of the technology can well realize the efficient intensive utilization of the land, relieve the situation of the shortage of land resources at present and help to promote the development of the moringa oleifera and lemongrass industries.
7. Through scientific experimental comparison, the invention selects the lemongrass as the intermediate crop under the moringa oleifera forest, and through innovation in aspects of land selection, land preparation, planting, inter-forest management and maintenance, pruning and shaping, harvesting, processing and the like, aims to innovate the development idea of the agriculture and forestry composite operation industry, relieve the influence of shortage of land resources on the development of the moringa oleifera and lemongrass industry, improve the utilization efficiency of the forest land, reduce plant diseases and insect pests, increase economic benefits and enrich the excellent mode of the composite agriculture and forestry in China.
Detailed Description
The invention is further illustrated by the following examples, which are not to be construed as limiting the invention thereto. The specific experimental conditions and methods not indicated in the following examples are generally conventional means well known to those skilled in the art.
Example 1:
a compound management method for planting lemongrass in leaf moringa oleifera forests comprises the following measures:
(1) selecting a forest land:
selecting a forest land which is high in temperature and rainy, sufficient in sunlight, good in drainage and fertile in soil, having no severe frost and cold damage weather all the year round, wherein the annual average rainfall is 800-1800 mm, the elevation of the forest land is below 600m, the slope is 5 degrees, the soil is fertile and weakly acidic, and the content of gravels in the soil is 3 percent;
(2) land preparation of forest land:
adopting full-tillage land preparation, ploughing by a tractor to dig a horizontal furrow surface with the depth of 100cm and the width of 1.5m and the height of 10cm, finely raking the furrow surface after mixing 1000 kg/mu of organic fertilizer with soil, and ensuring that drainage ditches drain smoothly on two sides of the furrow; opening a moringa planting ditch with the width of 5-8 cm and the depth of 6-7 cm at the ridge surface which is 10cm away from the upper drainage ditch; digging a lemongrass sowing ditch with the row spacing of 35cm, the width of 3-4 cm and the depth of 2-3 cm in a ridge surface strip-shaped area which is 10cm away from the lower drainage ditch and 50cm away from the moringa oleifera planting ditch; the organic fertilizer is prepared from the following raw materials in parts by weight: 35 parts of pig manure, 20 parts of peanut shell, 15 parts of phosphorus tailings, 15 parts of manioc waste, 8 parts of urea, 6 parts of orange peel water extract, 5 parts of grape peel water extract, 8 parts of bacillus subtilis, 5 parts of lactobacillus plantarum and 6 parts of bacillus fibrosus; the preparation method of the organic fertilizer comprises the steps of mixing pig manure, peanut shells, phosphorus tailings, manioc wastes and urea, spraying a mixed solution of orange peel water extract, grape peel water extract, bacillus subtilis, lactobacillus plantarum and cellulose bacillus while turning over, putting the mixture into a fermentation tank or a fermentation tank for fermentation after uniformly mixing, controlling the fermentation temperature to be 37 ℃, and obtaining the organic fertilizer after fermenting for 15 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate; the grape skin water extract is prepared by mixing grape skin and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(3) planting:
sowing moringa oleifera and citronella grass in the last ten days of 3 months; dibbling 2-3 moringa seeds subjected to seed treatment in a moringa planting ditch every 50cm, covering soil for 4-6 cm, and compacting; mixing fine soil or plant ash into the lemongrass seeds according to the seed amount of 1.8 kg/mu, then sowing the mixture into the lemongrass sowing trench, and covering 2cm of soil; the seed treatment is to soak the moringa seeds for 1 hour by using a potassium permanganate solution with the mass concentration of 0.2 percent, to take out and wash the moringa seeds, to soak the moringa seeds in warm water at the temperature of 65 ℃, to change water for 1 time every 4 hours, to take out and to prepare for sowing after soaking for 12 hours;
(4) forest management and protection:
after the moringa seeds germinate for 15 days, combining ridging to remove weeds and carrying out uniform seeding and replanting; after the moringa seeds germinate for 30 days, spraying a leaching compound fertilizer with the effective nutrient content of nitrogen, phosphorus and potassium of 40 percent after raining in combination with weeding, wherein the fertilizing amount is 15 kg/mu; carrying out artificial weeding when weeds grow by 30-50 cm, and topdressing 200kg after each weeding, wherein the fertilizer used for topdressing is obtained by uniformly mixing 500 parts by weight of human and animal manure, 100 parts by weight of fine soil, 35 parts by weight of urea and 10 parts by weight of orange peel water extract and then fermenting for 2 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(5) pruning and shaping:
when the height of the moringa oleifera is 50m, cutting off a trunk from a position of 30cm, leaving 3-4 first-level branches after germination, then cutting off from a position of 50cm when the moringa oleifera grows to 70cm, leaving 10-15 second-level branches, then cutting off from a position of 65cm when the moringa oleifera grows to 90cm, and leaving 20-30 third-level branches; supplementing fertilizer in time according to the growth condition of the branches and leaves of the moringa oleifera, and keeping the whole plant height of the moringa oleifera to be 65-70 cm after the leaves are picked for the last time in winter every year;
(6) harvesting and processing:
collecting tender hearts 10-15 cm from the top of the buds of the second-level branches and the third-level branches of the moringa oleifera to be used as vegetables; collecting moringa oleifera mature leaves, namely breaking off the whole branches from the leaf stalks, drying in the air and shaking off the leaves, wherein the collected moringa oleifera mature leaves can be dried to be made into tea or deeply processed; harvesting the cedronella inflorescences after the cedronella inflorescences are half-cooked, spreading, and drying in the sun for later use.
Example 2:
a compound management method for planting lemongrass in leaf moringa oleifera forests comprises the following measures:
(1) selecting a forest land:
selecting a forest land which is high in temperature and rainy, sufficient in sunlight, good in drainage and fertile in soil, having no severe frost and cold damage weather all the year round, wherein the annual average rainfall is 800-1800 mm, the elevation of the forest land is below 600m, the slope is 5 degrees, the soil is fertile and weakly acidic, and the content of gravels in the soil is 10 percent;
(2) land preparation of forest land:
adopting full reclamation and land preparation; the machine ploughing digging depth is 25cm, ridges are formed into horizontal ridge surfaces with the width of 2m and the height of 15cm, the ridge surfaces are finely dug and leveled after 1000 kg/mu of organic fertilizer is mixed with soil, and drainage channels are smoothly drained at two sides of the ridges; opening a moringa planting ditch with the width of 5-8 cm and the depth of 6-7 cm at the ridge surface which is 10cm away from the upper drainage ditch; digging a lemongrass sowing ditch with the row spacing of 35cm, the width of 3-4 cm and the depth of 2-3 cm in a ridge surface strip-shaped area which is 10cm away from the lower drainage ditch and 50cm away from the moringa oleifera planting ditch; the organic fertilizer is prepared from the following raw materials in parts by weight: 32 parts of pig manure, 23 parts of peanut shell, 12 parts of phosphorus tailings, 15 parts of manioc waste, 6 parts of urea, 7 parts of orange peel water extract, 5 parts of grape peel water extract, 8 parts of bacillus subtilis, 5 parts of lactobacillus plantarum and 6 parts of bacillus fibrosus; the preparation method of the organic fertilizer comprises the steps of mixing pig manure, peanut shells, phosphorus tailings, manioc wastes and urea, spraying a mixed solution of orange peel water extract, grape peel water extract, bacillus subtilis, lactobacillus plantarum and cellulose bacillus while turning over, putting the mixture into a fermentation tank or a fermentation tank for fermentation after uniformly mixing, controlling the fermentation temperature to be 36 ℃, and obtaining the organic fertilizer after fermenting for 15 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate; the grape skin water extract is prepared by mixing grape skin and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(3) planting:
sowing moringa oleifera and citronella grass in the middle ten days of 4 months; dibbling 2-3 moringa seeds subjected to seed treatment in a moringa planting ditch every 50cm, covering soil for 4-6 cm, and compacting; mixing fine soil or plant ash into the lemongrass seeds according to the seed amount of 2 kg/mu, then sowing the mixture into the lemongrass sowing trench, and covering soil for 1-2 cm; the seed treatment is to soak the moringa seeds for 1 hour by using a potassium permanganate solution with the mass concentration of 0.2 percent, to take out and wash the moringa seeds, to soak the moringa seeds in warm water at the temperature of 65 ℃, to change water for 1 time every 4 hours, to take out and to prepare for sowing after soaking for 12 hours;
(4) forest management and protection:
after the moringa seeds germinate for 15 days, combining ridging to remove weeds and carrying out uniform seeding and replanting; after the moringa seeds sprout for 30 days, spraying a leaching compound fertilizer with 55 percent of available nutrient content of nitrogen, phosphorus and potassium after raining in combination with weeding, wherein the fertilizing amount is 15 kg/mu; carrying out artificial weeding when weeds grow by 30-50 cm, and topdressing 200kg after each weeding, wherein the fertilizer used for topdressing is obtained by uniformly mixing 500 parts by weight of human and animal manure, 100 parts by weight of fine soil, 35 parts by weight of urea and 10 parts by weight of orange peel water extract and then fermenting for 2 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(5) pruning and shaping:
when the height of the moringa oleifera is 50m, cutting off a trunk from a position of 30cm, leaving 3-4 first-level branches after germination, then cutting off from a position of 50cm when the moringa oleifera grows to 70cm, leaving 10-15 second-level branches, then cutting off from a position of 65cm when the moringa oleifera grows to 90cm, and leaving 20-30 third-level branches; supplementing fertilizer in time according to the growth condition of the branches and leaves of the moringa oleifera, and keeping the whole plant height of the moringa oleifera to be 65-70 cm after the leaves are picked for the last time in winter every year;
(6) harvesting and processing:
collecting tender hearts 10-15 cm from the top of the buds of the second-level branches and the third-level branches of the moringa oleifera to be used as vegetables; collecting moringa oleifera mature leaves, namely breaking off the whole branches from the leaf stalks, drying in the air and shaking off the leaves, wherein the collected moringa oleifera mature leaves can be dried to be made into tea or deeply processed; harvesting the cedronella inflorescences after the cedronella inflorescences are half-cooked, spreading, and drying in the sun for later use.
Example 3:
a compound management method for planting lemongrass in leaf moringa oleifera forests comprises the following measures:
(1) selecting a forest land:
selecting a forest land which is high in temperature and rainy, sufficient in sunlight, good in drainage and fertile in soil, having no severe frost and cold damage weather all the year round, wherein the annual average rainfall is 800-1800 mm, the elevation of the forest land is below 600m, the slope is 10 degrees, the soil is fertile and neutral, and the content of gravels in the soil is 5 percent;
(2) land preparation of forest land:
adopting terrace type strip soil preparation; the machine ploughing digging depth is 50cm, ridges are formed into horizontal ridge surfaces with the width of 1.6m and the height of 12cm, the ridge surfaces are finely dug and leveled after 1000 kg/mu of organic fertilizer mixed soil, and drainage channels are guaranteed to drain water smoothly at two sides of the ridges; opening a moringa planting ditch with the width of 5-8 cm and the depth of 6-7 cm at the ridge surface which is 10cm away from the upper drainage ditch; digging a lemongrass sowing ditch with the row spacing of 35cm, the width of 3-4 cm and the depth of 2-3 cm in a ridge surface strip-shaped area which is 10cm away from the lower drainage ditch and 50cm away from the moringa oleifera planting ditch; the organic fertilizer is prepared from the following raw materials in parts by weight: 30 parts of pig manure, 25 parts of peanut shell, 10 parts of phosphorus tailings, 15 parts of manioc waste, 5 parts of urea, 9 parts of orange peel water extract, 7 parts of grape peel water extract, 10 parts of bacillus subtilis, 4 parts of lactobacillus plantarum and 5 parts of bacillus fibrosus; the preparation method of the organic fertilizer comprises the steps of mixing pig manure, peanut shells, phosphorus tailings, manioc wastes and urea, spraying a mixed solution of orange peel water extract, grape peel water extract, bacillus subtilis, lactobacillus plantarum and cellulose bacillus while turning over, putting the mixture into a fermentation tank or a fermentation tank for fermentation after uniformly mixing, controlling the fermentation temperature to be 37 ℃, and obtaining the organic fertilizer after fermenting for 15 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate; the grape skin water extract is prepared by mixing grape skin and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(3) planting:
sowing and planting moringa oleifera and citronella grass in 3-4 months; dibbling 2-3 moringa seeds subjected to seed treatment in a moringa planting ditch every 50cm, covering soil for 4-6 cm, and compacting; mixing fine soil or plant ash into the lemongrass seeds according to the seed amount of 1.9 kg/mu, then sowing the mixture into the lemongrass sowing trench, and covering soil for 1 cm; the seed treatment is to soak the moringa seeds for 1 hour by using a potassium permanganate solution with the mass concentration of 0.2 percent, to take out and wash the moringa seeds, to soak the moringa seeds in warm water at the temperature of 65 ℃, to change water for 1 time every 4 hours, to take out and to prepare for sowing after soaking for 12 hours;
(4) forest management and protection:
after the moringa seeds germinate for 15 days, combining ridging to remove weeds and carrying out uniform seeding and replanting; after the moringa seeds sprout for 30 days, spraying a leaching compound fertilizer with the effective nutrient content of nitrogen, phosphorus and potassium of 35 percent after raining in combination with weeding, wherein the fertilizing amount is 15 kg/mu; carrying out artificial weeding when weeds grow by 30-50 cm, and topdressing 200kg after each weeding, wherein the fertilizer used for topdressing is obtained by uniformly mixing 500 parts by weight of human and animal manure, 100 parts by weight of fine soil, 35 parts by weight of urea and 10 parts by weight of orange peel water extract and then fermenting for 2 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(5) pruning and shaping:
when the height of the moringa oleifera is 50m, cutting off a trunk from a position of 30cm, leaving 3-4 first-level branches after germination, then cutting off from a position of 50cm when the moringa oleifera grows to 70cm, leaving 10-15 second-level branches, then cutting off from a position of 65cm when the moringa oleifera grows to 90cm, and leaving 20-30 third-level branches; supplementing fertilizer in time according to the growth condition of the branches and leaves of the moringa oleifera, and keeping the whole plant height of the moringa oleifera to be 65-70 cm after the leaves are picked for the last time in winter every year;
(6) harvesting and processing:
collecting tender hearts 10-15 cm from the top of the buds of the second-level branches and the third-level branches of the moringa oleifera to be used as vegetables; collecting moringa oleifera mature leaves, namely breaking off the whole branches from the leaf stalks, drying in the air and shaking off the leaves, wherein the collected moringa oleifera mature leaves can be dried to be made into tea or deeply processed; harvesting the cedronella inflorescences after the cedronella inflorescences are half-cooked, spreading, and drying in the sun for later use.
Example 4:
a compound management method for planting lemongrass in leaf moringa oleifera forests comprises the following measures:
(1) selecting a forest land:
selecting a forest land which is high in temperature and rainy, sufficient in sunlight, good in drainage and fertile in soil, having no severe frost and cold damage weather all the year round, wherein the annual average rainfall is 800-1800 mm, the elevation of the forest land is below 600m, the slope is 15 degrees, the soil is fertile and weakly acidic, and the gravel content in the soil is 6 percent;
(2) land preparation of forest land:
adopting terrace type strip soil preparation; the machine ploughing digging depth is 30cm, ridges are formed into horizontal ridge surfaces with the width of 2m and the height of 15cm, the ridge surfaces are finely dug and leveled after 1000 kg/mu of organic fertilizer is mixed with soil, and drainage channels are smoothly drained at two sides of the ridges; opening a moringa planting ditch with the width of 5-8 cm and the depth of 6-7 cm at the ridge surface which is 10cm away from the upper drainage ditch; digging a lemongrass sowing ditch with the row spacing of 35cm, the width of 3-4 cm and the depth of 2-3 cm in a ridge surface strip-shaped area which is 10cm away from the lower drainage ditch and 50cm away from the moringa oleifera planting ditch; the organic fertilizer is prepared from the following raw materials in parts by weight: 33 parts of pig manure, 22 parts of peanut shell, 13 parts of phosphorus tailings, 15 parts of manioc waste, 7 parts of urea, 8 parts of orange peel water extract, 6 parts of grape peel water extract, 9 parts of bacillus subtilis, 5 parts of lactobacillus plantarum and 5 parts of bacillus fibrosus; the preparation method of the organic fertilizer comprises the steps of mixing pig manure, peanut shells, phosphorus tailings, manioc wastes and urea, spraying a mixed solution of orange peel water extract, grape peel water extract, bacillus subtilis, lactobacillus plantarum and cellulose bacillus while turning over, putting the mixture into a fermentation tank or a fermentation tank for fermentation after uniformly mixing, controlling the fermentation temperature to be 38 ℃, and obtaining the organic fertilizer after fermenting for 15 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate; the grape skin water extract is prepared by mixing grape skin and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(3) planting:
sowing moringa oleifera and citronella grass in the last ten days of 3 months; dibbling 2-3 moringa seeds subjected to seed treatment in a moringa planting ditch every 50cm, covering soil for 4-6 cm, and compacting; mixing fine soil or plant ash into the lemongrass seeds according to the seed amount of 2 kg/mu, then sowing the mixture into the lemongrass sowing trench, and covering soil for 2 cm; the seed treatment is to soak the moringa seeds for 1 hour by using a potassium permanganate solution with the mass concentration of 0.2 percent, to take out and wash the moringa seeds, to soak the moringa seeds in warm water at the temperature of 65 ℃, to change water for 1 time every 4 hours, to take out and to prepare for sowing after soaking for 12 hours;
(4) forest management and protection:
after the moringa seeds germinate for 15 days, combining ridging to remove weeds and carrying out uniform seeding and replanting; after the moringa seeds germinate for 30 days, spraying a leaching compound fertilizer with the effective nutrient content of nitrogen, phosphorus and potassium of 40 percent after raining in combination with weeding, wherein the fertilizing amount is 15 kg/mu; carrying out artificial weeding when weeds grow by 30-50 cm, and topdressing 200kg after each weeding, wherein the fertilizer used for topdressing is obtained by uniformly mixing 500 parts by weight of human and animal manure, 100 parts by weight of fine soil, 35 parts by weight of urea and 10 parts by weight of orange peel water extract and then fermenting for 2 days; the orange peel water extract is prepared by mixing orange peel and water according to the mass ratio of 1:5, decocting for 1 hour, and filtering to obtain filtrate;
(5) pruning and shaping:
when the height of the moringa oleifera is 50m, cutting off a trunk from a position of 30cm, leaving 3-4 first-level branches after germination, then cutting off from a position of 50cm when the moringa oleifera grows to 70cm, leaving 10-15 second-level branches, then cutting off from a position of 65cm when the moringa oleifera grows to 90cm, and leaving 20-30 third-level branches; supplementing fertilizer in time according to the growth condition of the branches and leaves of the moringa oleifera, and keeping the whole plant height of the moringa oleifera to be 65-70 cm after the leaves are picked for the last time in winter every year;
(6) harvesting and processing:
collecting tender hearts 10-15 cm from the top of the buds of the second-level branches and the third-level branches of the moringa oleifera to be used as vegetables; collecting moringa oleifera mature leaves, namely breaking off the whole branches from the leaf stalks, drying in the air and shaking off the leaves, wherein the collected moringa oleifera mature leaves can be dried to be made into tea or deeply processed; harvesting the cedronella inflorescences after the cedronella inflorescences are half-cooked, spreading, and drying in the sun for later use.
Comparative example 1:
a small plot of the same plot as in example 1 was a control plot of moringa oleifera plain, which was separately divided. The comparative example is consistent with the example 1 in the same land preparation and moringa planting density, and is different from the following point: the base fertilizer is a mixed fertilizer used in conventional planting, and is used for picking normal branches and leaves of the moringa oleifera without fine pruning and shaping.
Comparative example 2:
plots were prepared for the same plot as in example 4, for the individual lots of lemongrass. The comparative example shows the same manner as that of example 4 in the preparation of the lemongrass plot and the planting manner of the lemongrass, and is different from that of example 4 in that: the base fertilizer is a mixed fertilizer used in conventional planting.
The inventor conducts the combined management method for planting the lemongrass under the moringa oleifera forest and the planting method for the moringa oleifera and the lemongrass in the comparative example from 2016, 3 months to the Tan village and the Shang Zhen village in Tan Luo town in the western village region of Guangxi Nanning city, and the related data results are shown in Table 1.
TABLE 1 Table of the change of soil nutrient content in the annual average yield and point of application of Moringa oleifera and Cymbopogon citratus for 2 years
As can be seen from table 1, by applying the technology of the present invention, after 2 years of planting, the moringa oleifera and the lemongrass in examples 1, 2, 3 and 4 grow vigorously, the plants are healthy, no plant diseases and insect pests are caused, considerable moringa oleifera leaf yield and lemongrass harvest yield are obtained after harvesting, and good economic benefits are achieved; meanwhile, the diversity of plants is increased through compound operation, the land utilization efficiency is greatly improved, particularly, the effective N, P, K content of soil nutrients is greatly improved compared with that before compound operation, the soil structure is improved, and good ecological benefits are embodied.
Comparing the embodiments 1-3 with the comparative example 1, it is found that under the same soil climate and other conditions, the organic fertilizer used in the technology of the invention is lacked in the moringa planting process in the comparative example 1, the soil fertility is attenuated, even the effective P content is increased negatively, the moringa grows in the later period and is weak, and the branch and leaf growth amount is obviously reduced due to the lack of scientific pruning and shaping, and the yield of the tender cabbage and the mature fresh leaves is only about 1/2 of that of the embodiments 1-4. This shows that examples 1 to 3 using the technology of the present invention have a better eco-economic benefit than comparative example 1.
Comparing the example 4 with the comparative example 2, the results show that under the same soil climate and other conditions, the yields of the cedronella in the comparative example and the example are not obviously different, but the yield of the moringa oleifera planting in the comparative example 2 is lacked, and the economic benefit is obviously lagged behind that of the example 4; meanwhile, the content of soil nutrients in example 4 is improved well compared with that in comparative example 2, and the content of alkaline hydrolysis N, the content of available P and the content of available K are obviously improved. This shows that example 4 using the technology of the present invention has a much better eco-economic efficiency than comparative example 2.
Furthermore, it should be understood that although the present description refers to embodiments, not every embodiment may contain only a single embodiment, and such description is for clarity only, and those skilled in the art should integrate the description, and the embodiments may be combined as appropriate to form other embodiments understood by those skilled in the art.