CN111279989A - Planting method of sweet elephant grass - Google Patents
Planting method of sweet elephant grass Download PDFInfo
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- CN111279989A CN111279989A CN201811501965.3A CN201811501965A CN111279989A CN 111279989 A CN111279989 A CN 111279989A CN 201811501965 A CN201811501965 A CN 201811501965A CN 111279989 A CN111279989 A CN 111279989A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G20/00—Cultivation of turf, lawn or the like; Apparatus or methods therefor
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
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Abstract
A planting method of sweet grassiness comprises the following steps: 1) land preparation: deep ploughing 50-70 cm before year, adding the selenium-rich base fertilizer along with the deep ploughing, fine ploughing after year, removing stone impurities, leveling to form a ridge, forming a drainage ditch between the ridge and the ridge, digging planting holes on the ridge, and filling the selenium-rich base fertilizer into the planting holes; 2) seedling raising; 3) transplanting; 4) field management: watering and draining waterlogging in time, dressing selenium-rich foliar fertilizer every 8-10 days after transplanting for 15 days, and dressing selenium-rich compound fertilizer when seedlings grow to plants with the height of 60-65 cm; and two days after each harvest, dressing the selenium-rich root fertilizer once in combination with soil loosening and watering, harvesting two days after the last crop before winter, and applying the selenium-rich winter fertilizer once in combination with soil loosening and watering to ensure the smooth overwintering and the next year regeneration of root buds. By applying the sweet grassiness planting method, the sweet grassiness has good growth vigor, high yield and high selenium content, and can provide economical and practical selenium-rich food for breeding the mountain pigs.
Description
Technical Field
The invention relates to the technical field of planting, in particular to a planting method of sweetgrass.
Background
The pennisetum purpureum belongs to plants of the pennisetum of the Gramineae, is novel high-protein high-yield pasture widely cultivated in tropical and subtropical regions, has the characteristics of strong adaptability, quick propagation, good quality, long utilization period and the like, can be harvested for 6-8 times per year, is tall and big, has the plant height of 2-3 meters generally, can reach more than 5 meters for tall people, has developed root system, has strong extending fibrous roots, is distributed in soil layers about 40 centimeters deep, can reach 4 meters for the deepest people, and can save energy to grow aerial roots in middle and lower stems in warm and humid seasons; the stems are clustered, upright, nodular, 1-2 cm in diameter and round; the tillering is more, and usually 50-100 tillers are produced; the leaves grow mutually, the length is 40-100 cm, the width is 1-3 cm, and the leaves are provided with fuzz; the panicle is yellow brown or yellow, the length of the panicle is 15-30 cm, more than 250 spikelets are arranged on each panicle, and 3 flowers are arranged on each spikelet; the seeds are easy to fall off when being mature, the germination rate of the seeds is very low, and the seedlings grow very slowly.
The sweet elephant grass is an important food source of the mountain flower pigs due to high fresh and sweet degree, less crude fiber, fresh, tender and juicy, good palatability and easiness in digestion, however, the sweet elephant grass products obtained by the existing sweet elephant grass planting technology are common and can only be used as common food materials of the mountain flower pigs, and cannot bring greater improvement to the quality and the economic benefit of the mountain flower pigs.
Disclosure of Invention
The technical problem to be solved by the invention is to provide a planting method of sweet grassiness to obtain the selenium-rich sweet grassiness.
The technical problem solved by the invention is realized by adopting the following technical scheme:
a planting method of sweet grassiness comprises the following steps:
1) land preparation: selecting soil with a deep soil layer, loose and fertile soil, sunny exposure and good drainage performance, deeply ploughing by 50-70 cm before year, adding a selenium-rich base fertilizer along with the deep ploughing, finely ploughing after year, removing stone impurities, leveling to form a bed, forming a drainage ditch between beds, digging planting holes on the beds, and filling a selenium-rich base fertilizer in the planting holes;
2) seedling culture: selecting healthy stems without diseases and insect pests as seed nodes, obliquely inserting the prepared seed nodes with axillary buds facing upwards and forming an angle of 45 degrees with the ground into soil, keeping the soil moist in a seedling period, and forming transplanted seedlings when the seedlings grow to 20-25 cm;
3) transplanting: transplanting the seedlings into planting holes, thoroughly watering the roots with root fixing water, and regularly watering the root fixing water to keep the soil moist until the seedlings turn green;
4) field management: watering and draining waterlogging in time, dressing selenium-rich foliar fertilizer every 8-10 days after transplanting for 15 days, and dressing selenium-rich compound fertilizer when seedlings grow to plants with the height of 60-65 cm; and two days after each harvest, dressing the selenium-rich root fertilizer once in combination with soil loosening and watering, harvesting two days after the last crop before winter, and applying the selenium-rich winter fertilizer once in combination with soil loosening and watering to ensure the smooth overwintering and the next year regeneration of root buds.
Further, the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 100-150 parts of fermented sheep manure, 40-50 parts of selenium slag powder, 40-50 parts of turfy soil, 20-30 parts of perlite and 10-20 parts of compound fertilizer; the application amount of the selenium-rich base fertilizer is 3200-3600 kg/mu.
Further, the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 40-50 parts of fermented sheep manure, 30-40 parts of selenium slag powder, 15-25 parts of nitrogen fertilizer, 25-35 parts of phosphate fertilizer and 15-25 parts of calcium silicon fertilizer, wherein the application amount of the selenium-rich base fertilizer is 150-300 g/hole.
Further, the selenium-rich and selenium-rich foliar fertilizer comprises 1-1.5 parts of sodium selenite, 65-75 parts of monopotassium phosphate, 8-10 parts of boric acid, 5-10 parts of turf, 5-10 parts of humic acid, 0.2-0.4 part of compound sodium nitrophenolate, 3-3.5 parts of mepiquat chloride and 2.8-3 parts of kaolin, the application concentration of the selenium-rich foliar fertilizer is 0.1-0.3%, and the application amount after dilution is 600-700 kg/mu.
Further, the selenium-rich compound fertilizer comprises the following raw materials in parts by weight: 20-30 parts of compound fertilizer, 20-30 parts of turfy soil and 0.5-1 part of sodium selenite, wherein the application amount of the selenium-rich compound fertilizer is 40-80 kg/mu.
Further, the selenium-rich root fertilizer comprises the following raw materials in parts by weight: 60-80 parts of fermented sheep manure, 40-50 parts of turfy soil, 40-50 parts of selenium slag powder and 20-40 parts of nitrogen fertilizer, wherein the application amount of the selenium-rich root fertilizer is 80-100 kg/mu.
Further, the selenium-rich winter fertilizer comprises the following raw materials in parts by weight: 100-150 parts of fermented sheep manure, 40-50 parts of selenium slag powder, 40-50 parts of turfy soil, 20-30 parts of perlite and 10-20 parts of compound fertilizer; the application amount of the selenium-rich winter fertilizer is 100-200 kg/mu.
Has the advantages that: the planting method of the sweet grassiness provided by the invention is scientific and regular in fertilization, the sweet grassiness grows well, the yield is up to 15000 kg/mu, and the content of selenium element in the harvested sweet grassiness is 200-250 ug/kg through detection, so that economical and practical selenium-rich food can be provided for breeding of the mountain pigs, and the planting method has important practical production significance.
Detailed Description
In order to make the technical means, the creation characteristics, the achievement purposes and the effects of the invention easy to understand, the invention is further described with the specific embodiments.
Example 1
The embodiment relates to a planting method of sweet grassiness, which comprises the following steps:
1) land preparation: selecting soil with a deep soil layer, loose fertility, sunny exposure and good drainage performance, deep ploughing for about 60cm before year, and adding a selenium-rich base fertilizer along with the deep ploughing, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 120 parts of fermented sheep manure, 45 parts of selenium slag powder, 45 parts of turfy soil, 25 parts of perlite and 15 parts of compound fertilizer; the application amount of the selenium-rich base fertilizer is 3500 kg/mu, deep ploughing and the abundant selenium-rich fertilizer ensure the root system absorption and nutrient supply of the elephant grass, the elephant grass has developed root system and strong absorption capacity, can absorb the nutrients in the selenium-rich base fertilizer to the maximum extent and enrich selenium elements, and then is transported to stem leaves; after year, fine ploughing, removing impurities such as stones, leveling to form a ridge, forming a drainage ditch between the ridge and the ridge, digging planting holes on the ridge, wherein the hole distance of the planting holes is 50cm multiplied by 60cm, and filling selenium-rich base fertilizer in the planting holes, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 45 parts of fermented sheep manure, 35 parts of selenium slag powder, 20 parts of nitrogen fertilizer, 30 parts of phosphate fertilizer and 20 parts of calcium silicon fertilizer, wherein the application amount of the selenium-rich base fertilizer is 260 g/hole.
2) Seedling culture: the method comprises the steps of selecting healthy stems without diseases and insect pests as seed nodes, tearing off leaves wrapping axillary buds, cutting into small segments by a knife, wherein the segment surface of the knife edge is an inclined plane, one node is reserved on each segment, one axillary bud is reserved on each segment, the upper part of a bud eye is reserved short, the lower part of the bud eye is reserved long, in order to improve the survival rate, the root-growing powder can be used for soaking for 4 hours conditionally, and the seed nodes cut on the same day are planted on the same day to prevent water loss. The prepared seed nodes are inserted into soil with axillary buds facing upwards and forming an angle of 45 degrees with the ground, the soil is kept moist in the seedling period, and the seedlings can become transplanted seedlings when growing to about 24 cm;
3) transplanting: transplanting the seedlings into planting holes, thoroughly watering the roots with root fixing water, and regularly watering the root fixing water to keep the soil moist until the seedlings turn green;
4) field management: timely watering and draining waterlogging, dressing a selenium-rich foliar fertilizer every 9 days after 15 days of transplantation, wherein the selenium-rich foliar fertilizer comprises 1.2 parts of sodium selenite, 70 parts of monopotassium phosphate, 9 parts of boric acid, 8 parts of turf, 8 parts of humic acid, 0.3 part of compound sodium nitrophenolate, 3.2 parts of mepiquat chloride and 3 parts of kaolin, the application concentration of the selenium-rich foliar fertilizer is 0.2%, the application amount after dilution is 650 kg/mu, and dressing a selenium-rich compound fertilizer when seedlings grow to plants with the height of about 64 cm; the selenium-rich compound fertilizer comprises the following raw materials in parts by weight: 25 parts of compound fertilizer, 28 parts of turfy soil and 0.8 part of sodium selenite, wherein the application amount of the selenium-rich compound fertilizer is 60 kg/mu, and the selenium-rich root fertilizer is applied once in combination with soil loosening and watering two days after each harvest and comprises the following raw materials in parts by weight: 70 parts of fermented sheep manure, 45 parts of turfy soil, 45 parts of selenium slag powder and 30 parts of nitrogen fertilizer, wherein the application amount of the selenium-rich root fertilizer is 90 kg/mu, the selenium-rich winter fertilizer is applied for one time by combining soil loosening and watering after harvesting the last crop before winter so as to ensure the smooth overwintering and the regeneration of root buds in the coming year, and the selenium-rich winter fertilizer comprises the following raw materials in parts by weight: 120 parts of fermented sheep manure, 45 parts of selenium slag powder, 45 parts of turfy soil, 28 parts of perlite and 16 parts of compound fertilizer; the application amount of the selenium-rich winter fertilizer is 160 kg/mu.
Example 2
The embodiment relates to a planting method of sweet grassiness, which comprises the following steps:
1) land preparation: selecting soil with a deep soil layer, loose fertility, sunny exposure and good drainage performance, deep ploughing for about 65cm before year, and adding a selenium-rich base fertilizer along with the deep ploughing, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 100 parts of fermented sheep manure, 40 parts of selenium slag powder, 40 parts of turfy soil, 20 parts of perlite and 10 parts of compound fertilizer; the application amount of the selenium-rich base fertilizer is 3600 kg/mu, deep ploughing and the selenium-rich fertilizer ensures the root system absorption and nutrient supply of the elephant grass, the elephant grass has developed root system and strong absorption capacity, can absorb the nutrients in the selenium-rich base fertilizer to the maximum extent and enrich selenium elements, and then is transported to stem leaves; after year, fine ploughing, removing impurities such as stones, leveling to form a ridge, forming a drainage ditch between the ridge and the ridge, digging planting holes on the ridge, wherein the hole distance of the planting holes is 55cm multiplied by 55cm, and filling selenium-rich base fertilizer in the planting holes, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 40 parts of fermented sheep manure, 30 parts of selenium slag powder, 15 parts of nitrogen fertilizer, 25 parts of phosphate fertilizer and 15 parts of calcium silicon fertilizer, wherein the application amount of the selenium-rich base fertilizer is 150 g/hole.
2) Seedling culture: the method comprises the steps of selecting healthy stems without diseases and insect pests as seed nodes, tearing off leaves wrapping axillary buds, cutting into small segments by a knife, wherein the segment surface of the knife edge is an inclined plane, one node is reserved on each segment, one axillary bud is reserved on each segment, the upper part of a bud eye is reserved short, the lower part of the bud eye is reserved long, in order to improve the survival rate, the root-growing powder can be used for soaking for 4 hours conditionally, and the seed nodes cut on the same day are planted on the same day to prevent water loss. The prepared seed nodes are inserted into soil with axillary buds facing upwards and forming an angle of 45 degrees with the ground, the soil is kept moist in the seedling period, and the seedlings can become transplanted seedlings when growing to about 24 cm;
3) transplanting: transplanting the seedlings into planting holes, thoroughly watering the roots with root fixing water, and regularly watering the root fixing water to keep the soil moist until the seedlings turn green;
4) field management: timely watering and draining waterlogging, dressing a selenium-rich foliar fertilizer every 10 days after 15 days of transplantation, wherein the selenium-rich foliar fertilizer comprises 1 part of sodium selenite, 65 parts of monopotassium phosphate, 8 parts of boric acid, 5 parts of turf, 5 parts of humic acid, 0.2 part of compound sodium nitrophenolate, 3 parts of mepiquat chloride and 2.8 parts of kaolin, the application concentration of the selenium-rich foliar fertilizer is 0.1%, the application amount after dilution is 600 kg/mu, and dressing a selenium-rich compound fertilizer when seedlings grow to plants with the height of about 64 cm; the selenium-rich compound fertilizer comprises the following raw materials in parts by weight: the selenium-rich compound fertilizer comprises 20 parts of compound fertilizer, 20 parts of turfy soil and 0.5 part of sodium selenite, wherein the application amount of the selenium-rich compound fertilizer is 40 kg/mu, and the selenium-rich root fertilizer is applied once in combination with soil loosening and watering two days after each harvest and comprises the following raw materials in parts by weight: 60 parts of fermented sheep manure, 40 parts of turfy soil, 40 parts of selenium slag powder and 20 parts of nitrogen fertilizer, wherein the application amount of the selenium-rich root fertilizer is 8 kg/mu, the selenium-rich winter fertilizer is applied for one time by combining soil loosening and watering after harvesting the last crop before winter so as to ensure the smooth overwintering and the regeneration of root buds in the coming year, and the selenium-rich winter fertilizer comprises the following raw materials in parts by weight: 100 parts of fermented sheep manure, 40 parts of selenium slag powder, 40 parts of turfy soil, 20 parts of perlite and 10 parts of compound fertilizer; the application amount of the selenium-rich winter fertilizer is 200 kg/mu.
Example 3
The embodiment relates to a planting method of sweet grassiness, which comprises the following steps:
1) land preparation: selecting soil with a deep soil layer, loose fertility, sunny exposure and good drainage performance, deep ploughing for about 55cm before year, and adding a selenium-rich base fertilizer along with the deep ploughing, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 150 parts of fermented sheep manure, 50 parts of selenium slag powder, 50 parts of turfy soil, 30 parts of perlite and 20 parts of compound fertilizer; the application amount of the selenium-rich base fertilizer is 3200 kg/mu, the deep ploughing and the selenium-rich fertilizer ensure the root system absorption and the nutrient supply of the elephant grass, the elephant grass has developed root system and strong absorption capacity, and can absorb the nutrients in the selenium-rich base fertilizer to the maximum extent, enrich the selenium element and further transport the selenium element to stem leaves; after year, fine ploughing, removing impurities such as stones, leveling to form a ridge, forming a drainage ditch between the ridge and the ridge, digging planting holes on the ridge, wherein the hole distance of the planting holes is 60cm multiplied by 60cm, and filling selenium-rich base fertilizer in the planting holes, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 50 parts of fermented sheep manure, 40 parts of selenium slag powder, 25 parts of nitrogen fertilizer, 35 parts of phosphate fertilizer and 25 parts of calcium silicon fertilizer, wherein the application amount of the selenium-rich base fertilizer is 300 g/hole.
2) Seedling culture: the method comprises the steps of selecting healthy stems without diseases and insect pests as seed nodes, tearing off leaves wrapping axillary buds, cutting into small segments by a knife, wherein the segment surface of the knife edge is an inclined plane, one node is reserved on each segment, one axillary bud is reserved on each segment, the upper part of a bud eye is reserved short, the lower part of the bud eye is reserved long, in order to improve the survival rate, the root-growing powder can be used for soaking for 4 hours conditionally, and the seed nodes cut on the same day are planted on the same day to prevent water loss. The prepared seed nodes are inserted into soil with axillary buds facing upwards and forming an angle of 45 degrees with the ground, the soil is kept moist in the seedling period, and the seedlings can become transplanted seedlings when growing to about 24 cm;
3) transplanting: transplanting the seedlings into planting holes, thoroughly watering the roots with root fixing water, and regularly watering the root fixing water to keep the soil moist until the seedlings turn green;
4) field management: timely watering and draining waterlogging, dressing a selenium-rich foliar fertilizer every 8 days after 15 days of transplantation, wherein the selenium-rich foliar fertilizer comprises 1.5 parts of sodium selenite, 75 parts of monopotassium phosphate, 10 parts of boric acid, 10 parts of turf, 10 parts of humic acid, 0.4 part of compound sodium nitrophenolate, 3.5 parts of mepiquat chloride and 3 parts of kaolin, the application concentration of the selenium-rich foliar fertilizer is 0.3%, the application amount after dilution is 700 kg/mu, and dressing a selenium-rich compound fertilizer when seedlings grow to plants with the height of about 64 cm; the selenium-rich compound fertilizer comprises the following raw materials in parts by weight: 30 parts of compound fertilizer, 230 parts of turfy soil and 1 part of sodium selenite, wherein the application amount of the selenium-rich compound fertilizer is 80 kg/mu, and the selenium-rich root fertilizer is applied once in combination with soil loosening and watering two days after each harvest and comprises the following raw materials in parts by weight: 80 parts of fermented sheep manure, 50 parts of turfy soil, 50 parts of selenium slag powder and 40 parts of nitrogen fertilizer, wherein the application amount of the selenium-rich root fertilizer is 100 kg/mu, the selenium-rich winter fertilizer is applied for one time by combining soil loosening and watering after harvesting the last crop before winter so as to ensure the smooth overwintering and the regeneration of root buds in the coming year, and the selenium-rich winter fertilizer comprises the following raw materials in parts by weight: 150 parts of fermented sheep manure, 50 parts of selenium slag powder, 50 parts of turfy soil, 30 parts of perlite and 20 parts of compound fertilizer; the application amount of the selenium-rich winter fertilizer is 100 kg/mu.
The foregoing shows and describes the general principles, essential features, and advantages of the invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, which are described in the specification and illustrated only to illustrate the principle of the present invention, but that various changes and modifications may be made therein without departing from the spirit and scope of the present invention, which fall within the scope of the invention as claimed. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (7)
1. The planting method of the sweet grassiness is characterized by comprising the following steps:
1) land preparation: selecting soil with a deep soil layer, loose and fertile soil, sunny exposure and good drainage performance, deeply ploughing by 50-70 cm before year, adding a selenium-rich base fertilizer along with the deep ploughing, finely ploughing after year, removing stone impurities, leveling to form a bed, forming a drainage ditch between beds, digging planting holes on the beds, and filling a selenium-rich base fertilizer in the planting holes;
2) seedling culture: selecting healthy stems without diseases and insect pests as seed nodes, obliquely inserting the prepared seed nodes with axillary buds facing upwards and forming an angle of 45 degrees with the ground into soil, keeping the soil moist in a seedling period, and forming transplanted seedlings when the seedlings grow to 20-25 cm;
3) transplanting: transplanting the seedlings into planting holes, thoroughly watering the roots with root fixing water, and regularly watering the root fixing water to keep the soil moist until the seedlings turn green;
4) field management: watering and draining waterlogging in time, dressing selenium-rich foliar fertilizer every 8-10 days after transplanting for 15 days, and dressing selenium-rich compound fertilizer when seedlings grow to plants with the height of 60-65 cm; and two days after each harvest, dressing the selenium-rich root fertilizer once in combination with soil loosening and watering, harvesting two days after the last crop before winter, and applying the selenium-rich winter fertilizer once in combination with soil loosening and watering to ensure the smooth overwintering and the next year regeneration of root buds.
2. The planting method of the sweet grassiness according to claim 1, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 100-150 parts of fermented sheep manure, 40-50 parts of selenium slag powder, 40-50 parts of turfy soil, 20-30 parts of perlite and 10-20 parts of compound fertilizer; the application amount of the selenium-rich base fertilizer is 3200-3600 kg/mu.
3. The planting method of the sweet grassiness according to claim 1, wherein the selenium-rich base fertilizer comprises the following raw materials in parts by weight: 40-50 parts of fermented sheep manure, 30-40 parts of selenium slag powder, 15-25 parts of nitrogen fertilizer, 25-35 parts of phosphate fertilizer and 15-25 parts of calcium silicon fertilizer, wherein the application amount of the selenium-rich base fertilizer is 150-300 g/hole.
4. The planting method of the sweet grassiness according to claim 1, wherein the selenium-rich foliar fertilizer comprises 1-1.5 parts of sodium selenite, 65-75 parts of monopotassium phosphate, 8-10 parts of boric acid, 5-10 parts of grass peat, 5-10 parts of humic acid, 0.2-0.4 part of compound sodium nitrophenolate, 3-3.5 parts of mepiquat chloride and 2.8-3 parts of kaolin, the application concentration of the selenium-rich foliar fertilizer is 0.1-0.3%, and the application amount after dilution is 600-700 kg/mu.
5. The planting method of the sweet grassiness according to claim 1, wherein the selenium-rich compound fertilizer comprises the following raw materials in parts by weight: 20-30 parts of compound fertilizer, 20-30 parts of turfy soil and 0.5-1 part of sodium selenite, wherein the application amount of the selenium-rich compound fertilizer is 40-80 kg/mu.
6. The planting method of the sweet grassiness according to claim 1, wherein the selenium-rich root fertilizer comprises the following raw materials in parts by weight: 60-80 parts of fermented sheep manure, 40-50 parts of turfy soil, 40-50 parts of selenium slag powder and 20-40 parts of nitrogen fertilizer, wherein the application amount of the selenium-rich root fertilizer is 80-100 kg/mu.
7. The planting method of the sweet grassiness according to claim 1, wherein the selenium-rich winter fertilizer comprises the following raw materials in parts by weight: 100-150 parts of fermented sheep manure, 40-50 parts of selenium slag powder, 40-50 parts of turfy soil, 20-30 parts of perlite and 10-20 parts of compound fertilizer; the application amount of the selenium-rich winter fertilizer is 100-200 kg/mu.
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| CN113455135A (en) * | 2021-08-17 | 2021-10-01 | 黑龙江世纪云天化农业科技有限公司 | Method for constructing fertile plough layer of planting soil |
| CN113455135B (en) * | 2021-08-17 | 2022-01-25 | 黑龙江世纪云天化农业科技有限公司 | Method for constructing fertile plough layer of planting soil |
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