CN111837854A - Method for producing pubescent angelica seeds - Google Patents
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Abstract
The invention provides a method for producing pubescent angelica seeds, which comprises the following steps: after land selection, applying a base fertilizer consisting of decomposed farmyard manure, calcium magnesium phosphate fertilizer and a sustaining boron base fertilizer, and deep ploughing, fine raking and ridging to obtain a land to be planted; when the radix angelicae pubescentis medicinal materials are harvested, the fresh roots of the radix angelicae pubescentis which are good in development, free of rot and insect diseases and good in fresh weight are selected as seed roots; planting 1 plant in each hole with the bud upwards, covering soil, and setting the planting density at 1320 plants/mu; after transplanting and field planting of the seed roots, topdressing is carried out twice, and thoroughly decomposed human and animal manure or thoroughly decomposed cake fertilizer is topdressed in the middle and last ten days of 4 months for the first time; applying a mixture of urea and potassium sulfate to the soil in the last 5 th or last 6 th month, covering soil, and spraying boric fertilizer to the bottoms of the leaves; when the seeds are mature in 9 months, the seeds at the middle part and the upper part of the plant are collected firstly, and the seeds at the lower part are collected after 7-10 days. The yield per mu of the radix angelicae pubescentis seeds reaches about 40kg, the thousand seed weight reaches more than 4g, the yield and the quality of the radix angelicae pubescentis seeds are obviously improved, and the seed production benefit is greatly improved.
Description
Technical Field
The invention belongs to the technical field of seed production, and particularly relates to a method for producing radix angelicae pubescentis seeds.
Background
The pubescent angelica is a dry root of Angelica gigas nakai of Umbelliferae, is a common Chinese medicinal material, and has been planted manually for more than 300 years; mainly produced in provinces such as Hubei province and Gansu province, the planting area reaches more than 10 ten thousand mu, has become the pillar industry in local rural areas. But the production technology of the radix angelicae pubescentis seeds is laggard, the seeds are produced by adopting an interval digging or seed selection transplanting mode, the planting density is high (about 2000 plants/mu), 20 kg/mu of calcium magnesium phosphate fertilizer is used as a base fertilizer, and 10 kg/mu-20 kg/mu of compound fertilizer is topdressed in the flowering period. The seed yield is low (about 25kg per mu), and the seeds are fine (the weight of thousand seeds is mostly less than 3.5g), and the quality is poor.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides the method for producing the seeds of the radix angelicae pubescentis, the acre yield of the seeds of the radix angelicae pubescentis reaches about 40kg, the thousand seed weight reaches more than 4g, the yield and the quality of the seeds of the radix angelicae pubescentis are obviously improved, and the production benefit of the seeds is greatly improved.
In order to solve the technical problems, the invention adopts the technical scheme that: a production method of radix angelicae pubescentis seeds comprises the following steps:
s1, land selection and preparation: selecting a field block of loam or sandy loam with the gradient of 0-15 degrees, removing impurities on the ground of the field block in the middle-upper ten days of 11 months, raking out tree roots and grass roots, airing after deep ploughing, then applying base fertilizer, deep ploughing and fine raking, and ridging to obtain a land to be planted; the base fertilizer is composed of the following raw materials in parts by weight: 1000 kg/mu to 2000 kg/mu of decomposed farmyard manure, 30 kg/mu of calcium magnesium phosphate fertilizer and 150 g/mu of sustaining boron; p in the calcium magnesium phosphate fertilizer2O5The content of the active component is more than or equal to 12 percent;
the method is characterized in that the method comprises the following steps that (1) radix angelicae pubescentis seeds are produced by farmers in radix angelicae pubescentis production areas, most of the radix angelicae pubescentis seeds are produced in an interval digging mode, the planting density is high (about 2000 plants/mu), radix angelicae pubescentis roots are not selected and transplanted, base fertilizers are not applied, deep ploughing is not carried out, only 10 kg/mu-20 kg/mu of compound fertilizers are applied in a topdressing mode in the flowering period, other part of the farmers adopt a digging and transplanting mode, 20 kg/mu of calcium magnesium phosphate fertilizers are required to be applied as base fertilizers, deep ploughing is carried out on the land, rotten farmyard fertilizers are not applied, and 10 kg/mu-20 kg/mu of compound;
according to the method, when the radix angelicae pubescentis medicinal materials are dug, a method of transplanting superior seed roots is selected for producing radix angelicae pubescentis seeds, base fertilizer is needed to be applied before transplanting, soil is deeply turned over, and thoroughly decomposed farmyard manure is applied to increase the content of organic matters such as soil humus; applying 30 kg/mu of calcium magnesium phosphate fertilizer to meet the great demand of the radix angelicae pubescentis on phosphorus nutrients for bolting, flowering and fructification; applying boron fertilizer to promote the normal fertilization process and improve the seed setting rate; in addition, as the pubescent angelica root producing area is mostly acid soil, the calcium magnesium phosphate fertilizer can also play a role in reducing the acidity of the soil;
s2, selecting seed roots: when the radix angelicae pubescentis medicinal material is harvested, selecting the fresh roots of the radix angelicae pubescentis which are good in development, free of rot, disease and insect damage and good in fresh weight as seed roots;
s3, transplanting and planting: carrying out hole planting on the seed roots obtained in the step S2 on ridges of the land to be planted obtained in the step S1 according to the plant spacing of 50-60 cm, planting 1 plant in each hole with the bud upwards, covering soil, and carrying out intertillage weeding in time, wherein the planting density is 1320 plants/mu;
in the vegetative growth stage of the radix angelicae pubescentis, the plant height is less than 80cm, and the crown width is about 30cm, so that close planting is needed to obtain higher yield of medicinal materials (roots); in the reproductive growth stage, the plant height can reach more than 2 meters, the crown width can reach more than 80cm, and the radix angelicae pubescentis is rotten and deteriorated and cannot be used as a medicinal material while seeds are produced;
the planting density is reduced, and the growth and development of individual plants are facilitated; secondly, the consumption of the radix angelicae pubescentis seed roots is reduced from 2000 per mu to 1320 per mu, 680 seed roots are saved per mu, the fresh weight of each plant is 300g, the dry rate is 30%, the price of dry medicines is 25 yuan (2019-2020, the ground price of the dry radix angelicae pubescentis is generally 26 yuan-30 yuan), and more than 1500 yuan can be saved per mu; thirdly, the radix angelicae pubescentis is unlimited inflorescence and anemophilous flowers, so that the density is reduced, ventilation and light transmission in the field are facilitated, pollination is promoted, and the maturing rate is improved;
s4, topdressing: after transplanting and field planting of the seed roots, topdressing is carried out twice, wherein in the middle and last ten days of 4 months, top dressing is carried out on thoroughly decomposed fertilizer; topdressing the fertilizer in the last 5 th or last 6 th month; the second fertilizer dressing method comprises the following steps: after the mixture of urea and potassium sulfate is applied to the soil, covering soil, and spraying boron fertilizer diluted by 1500 times with water to the bottom of plant leaves; the dosage of the urea in the mixture of the urea and the potassium sulfate is 7.5 kg/mu, and the dosage of the potassium sulfate is 15 kg/mu; the decomposed manure applied for the first time is decomposed human and animal manure with the use amount of 1500 kg/mu to 2000 kg/mu or decomposed cake manure with the use amount of 50 kg/mu;
the pubescent angelica is generally located in a high-altitude mountain area of more than 1500 meters, the winter is slowly rewarming in spring, roots of the pubescent angelica generally grow branches and leaves at the bottom of 3 months and at the beginning of 4 months, nutrients required for nutritional growth are provided by the roots of the pubescent angelica, the demand for quick-acting nutrients is low, so the fertilizer is not suitable for dressing, in the first ten days of 6 months, the pubescent angelica enters a reproductive growth stage from nutritional growth, the plant height is less than 80cm, the pubescent angelica grows to 2 meters or more in 20 days, simultaneously flowers and fruits, the nutrient demand is huge, so the quick-acting fertilizer (a mixture of urea and potassium sulfate) needs to be dressed, the demand for boron fertilizer is also high, the boron fertilizer needs to be sprayed for supplement, the nutritional growth of the pubescent angelica is more favorable, in the prior art (the dressing of compound fertilizer is 10 kg/mu-20 kg/mu in the flowering period), the dressing opportunity is not available, the plants of the pubescent angelica in the flowering period completely, has already bloomed and begins to fruit, at which point the demand for nutrients is already small;
s5, seed harvesting: when the seeds are mature in 9 months, the seeds at the middle part and the upper part of the plant are firstly harvested, and the seeds at the lower part of the plant are harvested after 7-10 days.
The pubescent angelica is an unlimited inflorescence, the plant grows gradually along with bolting, the inflorescence at the middle upper part of the plant blooms firstly, fruits firstly and matures firstly, and most of the nutrition of the plant is obtained; the inflorescence at the lower part of the plant blooms 7-10 days after the inflorescence at the middle upper part blooms, then fruits, then matures, only residual part nutrition of the plant is obtained, and the seed quality is slightly worse than that at the middle upper part;
firstly, harvesting seeds at the middle upper part, wherein the seeds are high-quality seeds; after 7-10 days, the lower seeds are mature, and then the lower seeds are collected, so that the seeds can be preliminarily classified.
Preferably, the ridge width of the ridge forming in the S1 is 50 cm-60 cm, the ridge height is 15 cm-20 cm, and the furrow width is 50 cm-60 cm.
Preferably, the fresh weight of the seed root in S2 is 400 g/root to 2000 g/root.
Preferably, the thickness of the casing soil in S3 is 3 cm-4 cm.
Preferably, in the step S4, when the fertilizer is applied for the second time, the depth of the mixture of the urea and the potassium sulfate applied to the soil is 3 cm-15 cm.
Compared with the prior art, the invention has the following advantages:
according to the method, when the radix angelicae pubescentis medicinal materials are dug, a method of transplanting superior seed roots is selected for producing radix angelicae pubescentis seeds, base fertilizer is needed to be applied before transplanting, soil is deeply turned over, and thoroughly decomposed farmyard manure is applied to increase the content of organic matters such as soil humus; applying a calcium magnesium phosphate fertilizer to 30 kg/mu to meet the huge demand of flowering and fructifying of the radix angelicae pubescentis on phosphorus nutrients; applying boron fertilizer to promote the normal fertilization process and improve the seed setting rate; and because the pubescent angelica root producing area is mostly acid soil, the calcium magnesium phosphate fertilizer can also play a role in reducing the acidity of the soil. The pubescent angelica is generally located in a high-altitude mountain area with the height of more than 1500 meters, the winter is slowly warmed up, the roots of the pubescent angelica generally grow branches and leaves at the bottom of 3 months and at the beginning of 4 months, the roots of the pubescent angelica provide nutrients required by nutrient growth, the demand for available nutrients is low, so the fertilizer is not suitable for additional application, the soil fertility can be increased and the nutrient duration can be increased by applying a thoroughly decomposed fertilizer, the pubescent angelica enters a reproductive growth stage with the nutrient growth, the plant height is less than 80cm, only 2 meters can grow in 30 days, flowers and fruits are grown, the demand for nutrients is huge, so the available fertilizer (a mixture of urea and potassium sulfate) needs to be applied, the boron fertilizer needs to be sprayed for supplement due to the fruition, the nutrient growth demand of the pubescent angelica is better facilitated, the seeds are harvested in different periods during harvesting, the yield and the quality of the seeds are improved, and the yield of the pubescent angelica seeds reaches about 40kg, the thousand seed weight reaches more than 4g (4.21 g-4.53 g), the yield and the quality of the radix angelicae pubescentis seeds are obviously improved, and the seed production benefit is greatly improved.
The present invention will be described in further detail with reference to examples.
Detailed Description
Example 1
The method for producing the pubescent angelica seeds comprises the following steps:
s1, land selection and preparation: selecting a loam field block with the gradient of 0 degrees in a left spring hole village of a Fujia village in Wufeng county, removing impurities on the ground of the field block in the middle-upper ten days of 11 months, raking out tree roots and grass roots, airing after deep ploughing, then applying a base fertilizer, deep ploughing and fine raking, and ridging to obtain a land to be planted; the base fertilizer is composed of the following raw materials in parts by weight: 1000 kg/mu of decomposed farmyard manure, 30 kg/mu of calcium magnesium phosphate fertilizer and 150 g/mu of sustaining boron; the ridge width of the ridging is 50cm, the ridge height is 15cm, and the furrow width is 50 cm; p in the calcium magnesium phosphate fertilizer2O5The content of the active component is more than or equal to 12 percent; the supported boron is purchased from the market;
the method is characterized in that the method comprises the following steps that (1) radix angelicae pubescentis seeds are produced by farmers in radix angelicae pubescentis production areas, the seeds are mostly produced in an interval digging mode, the planting density is high (about 2000 plants/mu), the root selection and transplanting of the radix angelicae pubescentis are not carried out, base fertilizer is not applied, deep ploughing is not carried out, only 10 kg/mu-20 kg/mu of compound fertilizer is applied before radix angelicae pubescentis blossoming, in addition, part of the farmers adopt a digging and transplanting mode, 20 kg/mu of calcium magnesium phosphate fertilizer is needed to be applied as the base fertilizer, deep ploughing is carried out, rotten farmyard manure is not applied, and 10 kg/mu-20 kg/mu of compound fertilizer is;
according to the method, when the radix angelicae pubescentis medicinal materials are dug, a method of transplanting superior seed roots is selected for producing radix angelicae pubescentis seeds, base fertilizer is needed to be applied before transplanting, soil is deeply turned over, and thoroughly decomposed farmyard manure is applied to increase the content of organic matters such as soil humus; applying a calcium magnesium phosphate fertilizer to 30 kg/mu to meet the huge demand of flowering and fructifying of the radix angelicae pubescentis on phosphorus nutrients; applying boron fertilizer to promote the normal fertilization process and improve the seed setting rate; in addition, as the pubescent angelica root producing area is mostly acid soil, the calcium magnesium phosphate fertilizer can also play a role in reducing the acidity of the soil;
s2, selecting seed roots: when the radix angelicae pubescentis medicinal material is harvested, selecting the fresh roots of the radix angelicae pubescentis which are good in development, free of rot, disease and insect damage and good in fresh weight as seed roots; the fresh weight of the seed roots is 400-2000 g/root;
s3, transplanting and planting: carrying out hole planting on the seed roots obtained in the step S2 on ridges of the land to be planted obtained in the step S1 according to the plant spacing of 50cm, planting 1 plant in each hole with the bud upwards, covering soil, wherein the thickness of the covered soil is 3-4 cm, the planting density is 1320 plants/mu, and intertillage weeding is carried out in time during the planting process;
in the vegetative growth stage of the radix angelicae pubescentis, the plant height is less than 80cm, and the crown width is about 30cm, so that close planting is needed to obtain higher yield of medicinal materials (roots); in the reproductive growth stage, the plant height can reach more than 2 meters, the crown width can reach more than 80cm, seeds are produced, and meanwhile, the roots of the radix angelicae pubescentis are rotten and deteriorated and cannot be used as medicinal materials;
the planting density is reduced, and the growth and development of individual plants are facilitated; secondly, the consumption of the radix angelicae pubescentis seed roots is reduced from 2000 per mu to 1320 per mu, 680 seed roots are saved per mu, the fresh weight of each plant is 300g, the dry rate is 30%, the price of dry medicines is 25 yuan (2019-2020, the ground price of the dry radix angelicae pubescentis is generally 26 yuan-30 yuan), and more than 1500 yuan can be saved per mu; thirdly, the radix angelicae pubescentis is unlimited inflorescence and anemophilous flowers, so that the density is reduced, ventilation and light transmission in the field are facilitated, pollination is promoted, and the maturing rate is improved;
s4, topdressing: after transplanting and field planting of the seed roots, topdressing is carried out twice, wherein in the middle and last ten days of 4 months, top dressing is carried out on thoroughly decomposed fertilizer; topdressing the fertilizer in the first 6 th month; the second fertilizer dressing method comprises the following steps: after the mixture of urea and potassium sulfate is applied to the soil, covering soil, and spraying boron fertilizer diluted by 1500 times with water to the bottom of plant leaves; the dosage of the urea in the mixture of the urea and the potassium sulfate is 7.5 kg/mu, and the dosage of the potassium sulfate is 15 kg/mu; the decomposed manure applied for the first time is decomposed human and animal excreta with the dosage of 1500 kg/mu; when the fertilizer is applied for the second time, the depth of the mixture of the urea and the potassium sulfate applied to the soil is 3 cm;
the pubescent angelica is produced in a high-altitude mountain area with the height of more than 1500 meters generally, the winter season is relatively slow to warm up in spring, the roots of the pubescent angelica generally grow branches and leaves at the bottom of 3 months and at the beginning of 4 months, the roots of the pubescent angelica provide nutrients required by nutrient growth, the demand for available nutrients is low, so the application of a chemical fertilizer is not suitable, in the first ten days of 6 months, the pubescent angelica grows nutritionally and enters a reproductive growth stage, the plant height is less than 80cm, only 2 meters can grow in 30 days, the fruits and flowers are grown simultaneously, the demand for nutrients is huge, so the available fertilizer (a mixture of urea and potassium sulfate) needs to be applied, the boron fertilizer needs to be applied for supplement, the nutrient growth of the pubescent angelica is more facilitated, in the prior art (the application of a compound fertilizer in the flowering phase is 10 kg/mu-20 kg/mu), the time of topdressing is short, the pubescent angelica plants in the flowering, has already bloomed and begins to fruit, at which point the demand for nutrients is already small; s5, seed harvesting: when the seeds are mature in 9 months, the seeds at the middle part and the upper part of the plant are collected firstly, and the seeds at the lower part of the plant are collected after 10 days.
The pubescent angelica is an unlimited inflorescence, the plant grows gradually along with bolting, the inflorescence at the middle upper part of the plant blooms firstly, fruits firstly and matures firstly, and most of the nutrition of the plant is obtained; the inflorescence at the lower part of the plant blooms 7-10 days after the inflorescence at the middle upper part blooms, and then the inflorescence is fruited and matured, only the nutrition of the residual part of the plant is obtained, so that the seed quality is slightly worse than that at the middle upper part;
firstly, harvesting seeds at the middle upper part, wherein the seeds are high-quality seeds; after 7-10 days, the lower seeds are mature, and then the lower seeds are collected, so that the seeds can be preliminarily classified.
After the harvested seeds of this example were sieved and discarded, the weight of the harvested seeds was 48.4kg, and the thousand seed weight of the harvested seeds was 4.53 g.
Example 2
The method for producing the pubescent angelica seeds comprises the following steps:
s1, land selection and preparation: selecting 0.5 mu of field blocks of sandy loam with the gradient of 10 degrees in the Sanxiong countryside Tianchi mountain in Enshi city, removing impurities on the ground of the field blocks in the middle-upper ten days in 11 months, raking out tree roots and grass roots, airing after deep ploughing, then applying base fertilizer, deep ploughing and fine raking, and ridging to obtain a land to be planted; the base fertilizer is composed of the following raw materials in parts by weight: 2000 kg/mu of decomposed farmyard manure, 30 kg/mu of calcium magnesium phosphate fertilizer and 150 g/mu of sustaining boron; the ridge width of the ridging is 60cm, the ridge height is 20cm, and the furrow width is 60 cm; p in the calcium magnesium phosphate fertilizer2O5The content of the active component is more than or equal to 12 percent; the supported boron is purchased from the market;
s2, selecting seed roots: when the radix angelicae pubescentis medicinal material is harvested, selecting the fresh roots of the radix angelicae pubescentis which are good in development, free of rot, disease and insect damage and good in fresh weight as seed roots; the fresh weight of the seed roots is 400-2000 g/root;
s3, transplanting and planting: carrying out hole planting on the seed roots obtained in the step S2 on ridges of the land to be planted obtained in the step S1 according to the plant spacing of 60cm, planting 1 plant in each hole with upward bud heads, covering soil, wherein the thickness of the covered soil is 3-4 cm, the planting density is 1320 plants/mu, and intertillage weeding is carried out in time during the planting process;
s4, topdressing: after transplanting and field planting of the seed roots, topdressing is carried out twice, wherein in the middle and last ten days of 4 months, top dressing is carried out on thoroughly decomposed fertilizer; topdressing the fertilizer in late 5 months for the second time; the second fertilizer dressing method comprises the following steps: after the mixture of urea and potassium sulfate is applied to the soil, covering soil, and spraying boron fertilizer diluted by 1500 times with water to the bottom of plant leaves; the dosage of the urea in the mixture of the urea and the potassium sulfate is 7.5 kg/mu, and the dosage of the potassium sulfate is 15 kg/mu; the decomposed manure applied for the first time is decomposed human and animal excreta with the use amount of 2000 kg/mu; when the fertilizer is applied for the second time, the depth of the mixture of the urea and the potassium sulfate applied to the soil is 15 cm;
s5, seed harvesting: when the seeds are mature in 9 months, the seeds at the middle part and the upper part of the plant are collected firstly, and the seeds at the lower part of the plant are collected 7 days later.
After the harvested seeds of this example were sieved and discarded, the weight of the harvested seeds was 21.2kg, and the thousand seed weight of the harvested seeds was 4.21 g.
Example 3
The method for producing the pubescent angelica seeds comprises the following steps:
s1, land selection and preparation: selecting 1 mu of field blocks of sandy loam with the gradient of 15 degrees in the Sanxiong countryside Tianchi mountain in Enshi city, removing impurities on the ground of the field blocks in the middle and upper ten days in 11 months, raking out tree roots and grass roots, turning deeply, airing, applying base fertilizer, ploughing deeply and finely, and ridging to obtain a land to be planted; the base fertilizer is composed of the following raw materials in parts by weight: 1500 kg/mu of decomposed farmyard manure, 30 kg/mu of calcium magnesium phosphate fertilizer and 150 g/mu of sustaining boron; the ridge width of the ridging is 55cm, the ridge height is 15cm, and the furrow width is 50 cm; p in the calcium magnesium phosphate fertilizer2O5The content of the active component is more than or equal to 12 percent; the supported boron is purchased from the market;
s2, selecting seed roots: when the radix angelicae pubescentis medicinal material is harvested, selecting the fresh roots of the radix angelicae pubescentis which are good in development, free of rot, disease and insect damage and good in fresh weight as seed roots; the fresh weight of the seed roots is 400-2000 g/root;
s3, transplanting and planting: carrying out hole planting on the seed roots obtained in the step S2 on ridges of the land to be planted obtained in the step S1 according to the plant spacing of 50cm, planting 1 plant in each hole with the bud upwards, covering soil, wherein the thickness of the covered soil is 3-4 cm, the planting density is 1320 plants/mu, and intertillage weeding is carried out in time during the planting process;
s4, topdressing: after transplanting and field planting of the seed roots, topdressing is carried out twice, wherein in the middle and last ten days of 4 months, top dressing is carried out on thoroughly decomposed fertilizer; topdressing the fertilizer in late 5 months for the second time; the second fertilizer dressing method comprises the following steps: after the mixture of urea and potassium sulfate is applied to the soil, covering soil, and spraying boron fertilizer diluted by 1500 times with water to the bottom of plant leaves; the dosage of the urea in the mixture of the urea and the potassium sulfate is 7.5 kg/mu, and the dosage of the potassium sulfate is 15 kg/mu; the decomposed fertilizer applied for the first time is decomposed cake fertilizer with the dosage of 50 kg/mu; when the fertilizer is applied for the second time, the depth of the mixture of the urea and the potassium sulfate applied to the soil is 10 cm;
s5, seed harvesting: when the seeds are mature in 9 months, the seeds at the middle part and the upper part of the plant are collected firstly, and the seeds at the lower part of the plant are collected after 10 days.
After the harvested seeds of this example were sieved and discarded, the weight of the harvested seeds was 44.2kg, and the thousand seed weight of the harvested seeds was 4.44 g.
The above description is only for the preferred embodiment of the present invention, and is not intended to limit the present invention in any way. Any simple modification, change and equivalent changes of the above embodiments according to the technical essence of the invention are still within the protection scope of the technical solution of the invention.
Claims (5)
1. A production method of radix angelicae pubescentis seeds is characterized by comprising the following steps:
s1, land selection and preparation: selecting a field block of loam or sandy loam with the gradient of 0-15 degrees, removing impurities on the ground of the field block in the middle-upper ten days of 11 months, raking out tree roots and grass roots, airing after deep ploughing, then applying base fertilizer, deep ploughing and fine raking, and ridging to obtain a land to be planted; the base fertilizer is composed of the following raw materials in parts by weight: 1000 kg/mu to 2000 kg/mu of decomposed farmyard manure, 30 kg/mu of calcium magnesium phosphate fertilizer and 150 g/mu of sustaining boron; p in the calcium magnesium phosphate fertilizer2O5The content of the active component is more than or equal to 12 percent;
s2, selecting seed roots: when the radix angelicae pubescentis medicinal material is harvested, selecting the fresh roots of the radix angelicae pubescentis which are good in development, free of rot, disease and insect damage and good in fresh weight as seed roots;
s3, transplanting and planting: carrying out hole planting on the seed roots obtained in the step S2 on ridges of the land to be planted obtained in the step S1 according to the plant spacing of 50-60 cm, planting 1 plant in each hole with the bud upwards, covering soil, and carrying out intertillage weeding in time, wherein the planting density is 1320 plants/mu;
s4, topdressing: after transplanting and field planting of the seed roots, topdressing is carried out twice, wherein in the middle and last ten days of 4 months, top dressing is carried out on thoroughly decomposed fertilizer; topdressing the fertilizer in the last 5 th or last 6 th month; the second fertilizer dressing method comprises the following steps: after the mixture of urea and potassium sulfate is applied to the soil, covering soil, and spraying boron fertilizer diluted by 1500 times with water to the bottom of plant leaves; the dosage of the urea in the mixture of the urea and the potassium sulfate is 7.5 kg/mu, and the dosage of the potassium sulfate is 15 kg/mu; the decomposed manure applied for the first time is decomposed human and animal manure with the use amount of 1500 kg/mu to 2000 kg/mu or decomposed cake manure with the use amount of 50 kg/mu;
s5, seed harvesting: when the seeds are mature in 9 months, the seeds at the middle part and the upper part of the plant are firstly harvested, and the seeds at the lower part of the plant are harvested after 7-10 days.
2. The method for producing pubescent angelica root seeds as claimed in claim 1, wherein ridges in S1 have a ridge width of 50-60 cm, a ridge height of 15-20 cm and a furrow width of 50-60 cm.
3. The method for producing pubescent angelica root seeds of claim 1, wherein the fresh weight of the seed roots in S2 is 400 g/root to 2000 g/root.
4. The method for producing pubescent angelica root seeds of claim 1, wherein the thickness of the covering soil in the step S3 is 3cm to 4 cm.
5. The method for producing pubescent angelica root seeds of claim 1, wherein the depth of the mixture of urea and potassium sulfate applied to the soil is 3cm to 15cm when the fertilizer is applied for the second time in S4.
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