CN107646560B - Planting method of alfalfa in alpine pasturing areas - Google Patents
Planting method of alfalfa in alpine pasturing areas Download PDFInfo
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- CN107646560B CN107646560B CN201710894987.XA CN201710894987A CN107646560B CN 107646560 B CN107646560 B CN 107646560B CN 201710894987 A CN201710894987 A CN 201710894987A CN 107646560 B CN107646560 B CN 107646560B
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01B—SOIL WORKING IN AGRICULTURE OR FORESTRY; PARTS, DETAILS, OR ACCESSORIES OF AGRICULTURAL MACHINES OR IMPLEMENTS, IN GENERAL
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- A01B79/02—Methods for working soil combined with other agricultural processing, e.g. fertilising, planting
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Abstract
The invention discloses a planting method of alfalfa in alpine pastoral areas, which comprises the following steps: s1, selecting land: selecting sandy loam or loam plots with flat topography, good drainage and deep soil layers; s2, land preparation and fertilization: comprises the steps of sequentially applying base fertilizer, ploughing and harrowing and finely harrowing on the selected land parcel; s3, selecting seeds and planting: the method specifically comprises the steps of seed selection, seed cleaning and sunning treatment, mixed seed treatment and sowing; s4, field management: comprises the steps of topdressing and irrigation; s5, ripening and harvesting. Through a series of measures of taking in each step for alfalfa establishes the planting in the success of high and cold pastoral area, has solved the single problem of high and cold pastoral area artificial meadow forage grass variety on the one hand, and on the other hand can improve forage grass unit area protein output, improves forage grass quality and utilization ratio, effectively compensaties the situation that high and cold pastoral area winter spring hay period domestic animal protein nutrition lacks, improves artificial meadow quality, promotes high and cold pastoral area artificial meadow ecosystem function.
Description
Technical Field
The invention relates to the technical field of pasture cultivation in alpine pasturing areas, in particular to a planting method of alfalfa in alpine pasturing areas.
Background
Alfalfa (Medicago L.), from the order of Dougales, Papilionaceae, Medicago, widely distributed in Europe, Asia, America and Africa, over 60 species worldwide, 16 species in China, widely distributed, both wild and cultivated. The alfalfa is the earliest and most widely cultivated forage grass in the world, is known as the king of pasture, has high yield and excellent grass quality, and is favored by various livestock and poultry. The growing time of the alfalfa is short, the leguminous forage is planted according to general sowing measures, the alfalfa is difficult to be successfully planted in the alpine pastoral area under the limitation of natural conditions, the alfalfa becomes a great obstacle for limiting the development of the alfalfa planting industry in the alpine pastoral area, and the sustainable development of the alfalfa grassland is severely restricted.
Due to special geographical conditions and unique natural environment in alpine pasturing areas, the grasses such as elymus, old awn wheat, poa annua and the like are used as excellent cultivation forage grasses widely planted in pasturing areas of Qinghai province and become main forage grasses in winter and spring hay seasons, but the perennial grasses are used as energy type pasture grasses, have generally low protein content and cannot meet the normal requirements of cold-season livestock on protein nutrition. The establishment of the grass-bean mixed sowing artificial grassland can improve the yield and the protein content of the pasture in unit area and improve the quality and the utilization rate of the pasture. However, due to the limitation of natural conditions, the introduction and cultivation of leguminous forage in alpine pasturing areas is generally common vetch, the common vetch serving as an annual climbing herbaceous plant cannot grow vertically and needs to be planted every year, so that the planting cost is remarkably increased, the common vetch and perennial gramineous forage cannot be planted in a mixed manner, and the purpose of one-time planting for years and perpetual utilization is achieved. If alfalfa can be successfully planted in the alpine pastoral area, the increase of the forage grass amount and the improvement of the quality can be promoted, and the sustainable utilization rate of the artificial grassland is improved.
Disclosure of Invention
In view of the above, the invention provides a planting method of alfalfa in alpine pasturing areas, which can be successfully planted in the alpine pasturing areas, promote the increase of forage grass amount and the improvement of quality in the alpine pasturing areas, and improve the sustainable utilization rate of artificial grasslands.
In order to achieve the purpose of the invention, the invention adopts the following technical scheme:
a planting method of alfalfa in alpine pasturing areas comprises the following steps:
s1, selecting land: selecting sandy loam or loam plots with flat topography, good drainage and deep soil layers, wherein the pH value of the selected plots is 6.0-9.0;
s2, land preparation and fertilization: comprises the steps of sequentially applying base fertilizer, ploughing and harrowing and finely harrowing on the selected land parcel; wherein, the fertilizers for applying the base fertilizer are farmyard manure and nitrogen-phosphorus compound fertilizer, the using amount of the farmyard manure is 1000 kg/mu-2000 kg/mu, the using amount of the nitrogen-phosphorus compound fertilizer is 6 kg/mu-15 kg/mu, and the plowing depth is 20-30 cm;
s3, selecting seeds and planting:
s31, selecting seeds: selecting a root-tiller-type and/or branched-type alfalfa variety with the autumn sleeping grade reaching 1-3 grade and strong regeneration capacity;
s32, seed cleaning and seed drying treatment: manually cleaning or mechanically cleaning the alfalfa to remove pollutant residues and remove miscellaneous grains, broken grains and shriveled grains mixed in alfalfa seeds; selecting clear weather before sowing, and drying the seeds in the sun for 2-3 days to improve the germination rate and survival rate of the seeds;
s33, mixed seed treatment: mixing fine sandy soil and alfalfa seeds according to a ratio of 4-5: 1, or uniformly mixing surface soil of an old alfalfa field and alfalfa seeds according to a ratio of 2-3: 1;
s34, sowing: adopting a seeder to ditch and sow alfalfa, adopting a ridge culture and row sowing method, wherein the ditching depth is 9-10 cm, covering soil after sowing, the thickness of the covering soil is 1-2 cm, and the sowing row spacing is 30-50 cm; wherein, nitrogen fertilizer, phosphate fertilizer and potash fertilizer are added as seed fertilizer during seeding;
s4, field management: comprises the steps of topdressing and irrigation;
in the stage from tillering to jointing of alfalfa, potassium fertilizer is applied to promote the accumulation of nutrient substances stored at the root of an alfalfa plant; the potash fertilizer is monopotassium phosphate or potassium sulfate fertilizer, the application amount is 5 kg/mu-10 kg/mu, and the side deep groove fertilization is adopted in the fertilization method;
irrigation follows the principle of 'deep irrigation and less irrigation', the irrigation amount is based on the saturation of soil water content, and at least water permeates into the main roots by 5cm below: performing spring irrigation when the seedlings of the alfalfa emerge in spring or after the seedlings turn green until the height of the seedlings is 2-3 cm, and performing autumn irrigation before freezing in autumn;
s5, mature harvest:
a mowing mode is adopted, the mowing time is controlled to be 4-5 weeks before frost, and the growth time of at least one month is ensured from the mowing time to the withering and yellow time of the alfalfa plant; and harvesting with high stubble, the height of the remained stubble is more than 5 cm.
Preferably, in step S1, the selected plot is planted with a previous crop of gramineae.
Preferably, in step S1, the soil of the selected plot is subjected to pH detection, and if the pH is less than 6.0, the soil is adjusted by dolomite powder or limestone to increase the pH to 6.0 to 9.0; if the pH value is more than 9.0, the sulfur powder is used for adjusting the soil to reduce the pH value to between 6.0 and 9.0.
Preferably, in step S1, the pH value of the selected plot is adjusted to 7.0-8.0.
Preferably, in step S2, the base fertilizer further includes potash fertilizer, and the amount of the potash fertilizer is 8 kg/mu to 12 kg/mu.
Preferably, in step S32, the washed alfalfa seeds are further treated with rhizobium inoculant.
Preferably, in step S34, the sowing time is selected between 4 months and 7 months, and the sowing should be performed as early as possible according to the soil moisture and precipitation conditions while avoiding the frost damage of the night frost.
Preferably, in step S34, the seeding date is selected from 5 to 6 middle of the month.
Preferably, in step S34, the ratio of the nitrogen fertilizer, the phosphate fertilizer and the potassium fertilizer is 5:1: 2.
preferably, in step S5, the alfalfa sown in the current year is not harvested and is harvested again from the second year.
Preferably, in step S5, for the cut alfalfa plants, after the alfalfa plants are withered and yellow, raking and burying the stems, so that the stems of the alfalfa plants are buried in the soil with the thickness of 3-5 cm.
According to the planting method of the alfalfa in the alpine pasturing area, provided by the embodiment of the invention, through a series of measures adopted in each step, the alfalfa is successfully planted in the alpine pasturing area, so that the problem of single variety of the artificial grassland in the alpine pasturing area is solved, the yield of protein in unit area of the pasture can be increased, the quality and the utilization rate of the pasture are improved, the condition of lacking of protein nutrition of livestock in a hay period in winter and spring in the alpine pasturing area is effectively compensated, the quality of the artificial grassland is improved, and the function of an ecological system of the artificial grassland in the alpine pasturing area is improved.
Detailed Description
In order to make the objects, technical solutions and advantages of the present invention more apparent, embodiments of the present invention are described in detail below.
The embodiment provides a planting method of alfalfa in alpine pastoral areas, which mainly comprises the steps of land selection, land preparation and fertilization, seed selection and planting, field management and mature harvesting.
Step S1, selecting land
Selecting sandy loam or loam plots with flat terrain, good drainage and deep soil layers. The low-lying soil which is easy to waterlog is not suitable for planting the alfalfa. The alfalfa is not resistant to strong acid and strong alkali, is favored by neutral or slightly alkaline soil, and can grow in the soil with the pH value of 6.0-9.0. The alfalfa has strong salt tolerance and can grow in soil with the soluble salt content of 0.3 percent. Alfalfa nodules cannot form when the pH of the soil is below 6.0, and alfalfa cannot grow due to calcium deficiency when the pH is below 5.0.
In a preferred embodiment, for the selected plot, the previous crop planted is a gramineous crop. Further, detecting the pH value of the soil of the selected land parcel, and if the pH value is less than 6.0, adjusting the soil by using dolomite powder or limestone to increase the pH value to between 6.0 and 9.0; if the pH value is more than 9.0, the sulfur powder is used for adjusting the soil to reduce the pH value to between 6.0 and 9.0. Most preferably, the selected plot is adjusted to a pH of between 7.0 and 8.0.
Step S2, land preparation and fertilization: comprises the steps of sequentially applying base fertilizer, ploughing and harrowing and finely harrowing on the selected land parcel;
before sowing, applying base fertilizer in combination with soil preparation, wherein the tilling depth is more than 20-30 cm. The nitrogen can be fixed by rooting tumors at the roots of the alfalfa, but the nitrogen nutrition from the seedling stage to the root nodule formation is mainly supplemented by fertilization. The organic fertilizer is an excellent fertilizer for improving the soil structure and improving the soil fertility, 1000 kg-2000 kg of decomposed farmyard manure is applied to each mu of land for base fertilizer, 6 kg-15 kg of nitrogen-phosphorus compound fertilizer is applied to each mu of land, and the soil and the fertilizer are uniformly mixed by appropriate deep ploughing and soil preparation after the fertilizer is applied, thereby being beneficial to root growth and seedling emergence. The alfalfa planting land requires deep soil layer and has deep-turning and deep-loosening foundation; high soil preparation quality, fine leveling and harrowing, fine soil crushing and seedling alignment and strengthening are required.
In a preferable scheme, the fertilizer for applying the base fertilizer also comprises a potassium fertilizer, and the dosage of the potassium fertilizer can be selected to be 8 kg/mu-12 kg/mu.
Step S3, selecting seeds for planting
S31, selecting seeds: according to soil fertility and climatic conditions in southerly and southerly pasturing areas of Qinghai province, selecting a root-tiller-type and/or branched-type alfalfa variety which is high in quality, high in yield, has physiological dormancy, achieves 1-3 grades of autumn dormancy, and is high in regeneration capacity.
S32, seed cleaning and seed drying treatment: the alfalfa is cleaned manually or mechanically to eliminate residual pollutant and eliminate impurity, broken and shrivelled alfalfa seeds, and the purity and germination rate are up to 85%. Selecting clear weather before sowing, and drying the seeds in the sun for 2-3 days in a dry sunny place to improve the germination rate and survival rate of the seeds.
Further, in a preferred scheme, the washed alfalfa seeds can be subjected to rhizobium inoculation treatment.
S33, mixed seed treatment: the fine sandy soil and the alfalfa seeds are mixed according to the proportion of 4-5: 1, so that the alfalfa seeds can be easily and uniformly sown into soil during subsequent sowing, or the surface soil of an old alfalfa field and the alfalfa seeds are uniformly mixed according to the proportion of 2-3: 1, and the purpose of inoculating the root nodules is effectively achieved.
S34, sowing: adopting a seeder to ditch and sow alfalfa, adopting a ridge culture and row sowing method, wherein the ditching depth is 9-10 cm, covering soil after sowing, the thickness of the covering soil is 1-2 cm, and the sowing row spacing is 30-50 cm; wherein, nitrogen fertilizer, phosphate fertilizer and potash fertilizer are added as seed fertilizer during seeding.
Wherein, the sowing time is determined according to the local natural conditions and the characteristics of the alfalfa. The general principle is that the seedlings are sowed as early as possible on the premise of avoiding the frost damage of night frost according to the soil moisture content and the precipitation condition. For alpine pasturing areas in Qinghai province, alfalfa can be sown from 4 months to 7 months. Spring sowing and summer sowing are mostly adopted in alpine regions. Spring sowing is mostly adopted in areas with good moisture content and little harm of wind and sand in spring, sowing is preferably started when the temperature of soil rises to the lowest temperature required by germination of alfalfa seeds, and the roots of the spring-sown alfalfa are well developed, so that safe overwintering is facilitated. However, in most regions in alpine pasturing areas, the characteristics of climate environments such as extremely cold in winter, severe wind erosion in winter and spring, drought in spring, late frost reduction and the like exist, and the mode of sowing in summer is generally adopted, but the alfalfa grows slowly in the current year of sowing, so that sowing in summer is preferably carried out early but not late, and sowing in 6 months is preferably carried out. The optimal sowing time is from 5 late to 6 middle of the month, so that the alfalfa needs at least 2.5 months of growth and development time, the number of branches of the plant is at least 2 before the plant starts to winter, the root neck is enlarged, and the diameter of the root neck is preferably more than 0.5 cm.
Wherein, for the seed fertilizer: most alfalfa seeds adopted in the prior production are uncoated seeds, few nodules are formed in the current year of sowing, and a proper amount of nitrogen fertilizer is applied as seed fertilizer during sowing to promote the formation of alfalfa nodules. And the phosphate fertilizer is applied as seed fertilizer, the growing period of the alfalfa is prolonged, the fixation and absorption of nitrogen of alfalfa root nodules are promoted, the cold resistance of the alfalfa is increased, and the overwintering rate is improved. The phosphate fertilizer is not easy to move, needs to be applied in advance, and is preferably applied enough at one time before or during sowing. The potassium fertilizer is used as seed fertilizer, which can inhibit weed invasion, prevent disease and pest incidence, and improve forage grass quality. Preferably, the ratio of the nitrogen fertilizer to the phosphorus fertilizer to the potassium fertilizer is 5:1: 2.
S4, field management
(1) And seedling management: the seedling management is very important for alfalfa planting, and the key management of sowing in spring and summer is to prevent weeds and ensure the soil moisture content.
(2) And topdressing: in the branching stage of the alfalfa, potassium fertilizer is applied to promote the accumulation of nutrient substances stored at the roots of alfalfa plants; the potash fertilizer is monopotassium phosphate or potassium sulfate fertilizer, the application amount is 5 kg/mu-10 kg/mu, and the fertilizing method adopts side deep groove fertilization. Topdressing is an essential factor for improving the overwintering rate of the alfalfa. In the stage from tillering to jointing of alfalfa, potassium fertilizer is applied to promote the accumulation of nutrient substances stored at the root of alfalfa plants, especially to improve the content of potassium in plant bodies and the cold resistance of the plants, and the content of potassium in the alfalfa bodies reflects the strength of the cold resistance of the plants to a certain extent. The fertilizer application method can adopt side deep groove fertilizer application, the fertilizer is distributed about 5cm below the seed side, and the application amount of the potassium dihydrogen phosphate or potassium sulfate fertilizer is 5-10 kg/mu. The fertilizer application method can also adopt the application of a foliar fertilizer, and 10-15 kg of nitrogen phosphorus potassium compound fertilizer is applied per mu.
(3) And irrigation: the alfalfa irrigation follows the principle of 'deep irrigation and less irrigation', the irrigation amount is based on the fact that the water content of soil is saturated, at least water permeates into the main roots by less than 5cm, shallow irrigation can affect the alfalfa root system to go deep, the root system is enabled to transversely expand in surface soil, the alfalfa root system and the alfalfa fibrous root system are caused, and the alfalfa irrigation is easily affected by freezing damage. The alfalfa is usually irrigated once in each of the two spring and autumn seasons. Specifically, spring irrigation is carried out when the alfalfa seedlings emerge in spring or after the green returning to the height of the seedlings of 2-3 cm, autumn irrigation is carried out before freezing in autumn, and autumn irrigation in 9 months is favorable for hibernation of the alfalfa.
S5, mature harvest
The mowing mode is adopted, and the mowing time and the stubble height are strict. The mowing is a main utilization mode of the alfalfa, and is also an important factor influencing the safe overwintering of the alfalfa. When cutting, the nutrient regeneration of the alfalfa and the accumulation of root system storage nutrients are fully considered. The mowing time is controlled to be 4-5 weeks before frost, and the growth time of at least one month is ensured from the mowing to the withering and yellow period of the alfalfa; and harvesting the high stubble, wherein the height of the remained stubble is preferably 5-6 cm. For areas with little snowfall, the stubble height should be above 10 cm. Firmly avoid the need of shoveling and cutting by an iron shovel.
In the preferable scheme, the warm season time of the alpine pasturing area is short, the seedlings grown in the same year after alfalfa planting are short, the root systems are not robust, the seedlings are not suitable to be mowed at the end of autumn in the same year after sowing, and the seedlings are harvested from the next year (the next year).
Further, in a preferable scheme, for the cut alfalfa plants, after the alfalfa plants are withered and yellow, raking and burying the necks of the alfalfa plants so that the alfalfa roots and the necks of the alfalfa plants are buried in the soil with the thickness of 3-5 cm.
In the above-described cultivation method, the parts not specifically described may be performed by referring to the prior art, and for example, the step of field management may further include weed removal and the like.
The planting method of the alfalfa in the alpine pasturing area provided by the embodiment comprises the steps of taking a series of measures, planting the alfalfa in the alpine pasturing area successfully, solving the problem that the variety of the artificial grassland pasture in the alpine pasturing area is single on the one hand, improving the yield of the protein in the unit area of the pasture on the other hand, improving the quality and the utilization rate of the pasture, effectively compensating the situation that the protein nutrition of livestock in the winter and spring hay period of the alpine pasturing area is deficient, improving the quality of the artificial grassland, and improving the function of the ecological system of the artificial grassland in the alpine pasturing.
The foregoing is directed to embodiments of the present application and it is noted that numerous modifications and adaptations may be made by those skilled in the art without departing from the principles of the present application and are intended to be within the scope of the present application.
Claims (2)
1. A planting method of alfalfa in alpine pastoral areas of Qinghai-Tibet plateau is characterized by comprising the following steps:
s1, selecting land: selecting sandy loam or loam plots with flat topography, good drainage and deep soil layers, wherein the previous crops of the selected plots are gramineous crops, and the pH value is 6.0-9.0; detecting the pH value of the soil of the selected land, and if the pH value is less than 6.0, adjusting the soil by using dolomite powder or limestone to increase the pH value to between 6.0 and 9.0; if the pH value is more than 9.0, adjusting the soil by using sulfur powder to reduce the pH value to between 6.0 and 9.0;
s2, land preparation and fertilization: sequentially performing base fertilizer application, plowing, harrowing and fine harrowing on the selected land parcel; the fertilizer for applying the base fertilizer comprises farmyard manure, a nitrogen-phosphorus compound fertilizer and a potassium fertilizer, wherein the using amount of the farmyard manure is 1000 kg/mu-2000 kg/mu, the using amount of the nitrogen-phosphorus compound fertilizer is 6 kg/mu-15 kg/mu, the using amount of the potassium fertilizer is 8 kg/mu-12 kg/mu, and the plowing depth is 20-30 cm;
s3, selecting seeds and planting:
s31, selecting seeds: selecting a root-tiller-type and/or branched-type alfalfa variety with the autumn sleeping grade reaching 1-3 grade and strong regeneration capacity;
s32, seed cleaning and seed drying treatment: manually cleaning or mechanically cleaning the alfalfa to remove pollutant residues, removing miscellaneous particles, broken particles and shriveled particles mixed in the alfalfa seeds, and inoculating rhizobia to the cleaned alfalfa seeds; selecting clear weather before sowing, and drying the seeds in the sun for 2-3 days to improve the germination rate and survival rate of the seeds;
s33, mixed seed treatment: mixing fine sandy soil and alfalfa seeds according to the proportion of 4-5: 1;
s34, sowing: adopting a seeder to ditch and sow alfalfa, adopting a ridge culture and row sowing method, wherein the ditching depth is 9-10 cm, covering soil after sowing, the thickness of the covering soil is 1-2 cm, and the sowing row spacing is 30-50 cm; wherein, nitrogen fertilizer, phosphate fertilizer and potash fertilizer are added as seed fertilizer during seeding; in the seed fertilizer, the proportion of the nitrogenous fertilizer, the phosphate fertilizer and the potash fertilizer is 5:1: 2; the sowing time is selected from the last ten days of month 5 to the middle ten days of month 6; and the seedlings should be sowed as early as possible on the premise of avoiding the frost damage of night frost according to the soil moisture content and the precipitation condition;
s4, field management: comprises the steps of topdressing and irrigation;
in the stage from tillering to jointing of alfalfa, potassium fertilizer is applied to promote the accumulation of nutrient substances stored at the root of an alfalfa plant; the potash fertilizer is monopotassium phosphate or potassium sulfate fertilizer, the application amount is 5 kg/mu-10 kg/mu, and the side deep groove fertilization is adopted in the fertilization method;
irrigation follows the principle of 'deep irrigation and less irrigation', the irrigation amount is based on the saturation of soil water content, and at least water permeates into the main roots by 5cm below: performing spring irrigation when the seedlings of the alfalfa emerge in spring or after the seedlings turn green until the height of the seedlings is 2-3 cm, and performing autumn irrigation before freezing in autumn;
s5, mature harvest:
a mowing mode is adopted, the mowing time is controlled to be 4-5 weeks before frost, and the growth time of at least one month is ensured from the mowing time to the withering and yellow time of the alfalfa plant; harvesting the high stubble, wherein the height of the remained stubble is more than 5 cm; the alfalfa planted in the current year is not harvested, the alfalfa is harvested from the second year, and the harvested alfalfa plants are harrowed up to bury necks after the alfalfa plants are withered and yellow, so that the roots and the necks of the alfalfa plants are buried in the soil with the thickness of 3-5 cm.
2. The method for planting alfalfa in alpine pasturing areas of Qinghai-Tibet plateau as claimed in claim 1, wherein in step S1, the pH value of the selected plots is adjusted to 7.0-8.0.
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| CN108243848B (en) * | 2018-02-11 | 2021-02-02 | 中国科学院植物研究所 | High-latitude cold-region alfalfa light-fertilizer regulation and control planting method |
| CN108353733A (en) * | 2018-02-11 | 2018-08-03 | 中国科学院植物研究所 | A kind of implantation methods of the cold area's Alfalfa of high latitude |
| CN109089747A (en) * | 2018-08-01 | 2018-12-28 | 中储草生态农业科技有限责任公司 | A method of improving Alfalfa nutritional quality |
| CN109122174A (en) * | 2018-09-14 | 2019-01-04 | 内蒙古蒙草生态环境（集团）股份有限公司 | A kind of sandy grassland clover type of seeding and implantation methods |
| CN109566280B (en) * | 2018-12-11 | 2021-02-12 | 安徽省农业科学院畜牧兽医研究所 | Irrigation method of alfalfa in desertification soil |
| CN109699229A (en) * | 2019-02-22 | 2019-05-03 | 兰州大学 | A kind of method of wetland with saline-alkaline planting clover Festuca Arundinacea mixed sward |
| CN111345200A (en) * | 2019-12-13 | 2020-06-30 | 固原宝发农牧有限责任公司 | Pasture planting method |
| CN113115688A (en) * | 2019-12-30 | 2021-07-16 | 中国农业科学院草原研究所 | Ridging and direct alfalfa seeding method |
| CN113243255A (en) * | 2021-03-18 | 2021-08-13 | 呼伦贝尔学院 | Lawn planting method for typical grassland area |
| CN113207560B (en) * | 2021-05-14 | 2023-04-25 | 河南青源天仁生物技术有限公司 | Alfalfa planting method by fully-biodegradable mulch film |
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| CN103583176A (en) * | 2013-10-15 | 2014-02-19 | 阜阳市颍泉区腾飞种植专业合作社 | Alfalfa planting method |
| CN106856973A (en) * | 2017-04-19 | 2017-06-20 | 临沂大学 | A kind of breeding method of efficient enhancing alfalfa-leaf function |
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