CN103141289A - Method for fast growth, high yield and high-efficient carbon capture cultivation of grain sorghum and sudan grass - Google Patents
Method for fast growth, high yield and high-efficient carbon capture cultivation of grain sorghum and sudan grass Download PDFInfo
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- 238000000034 method Methods 0.000 title claims abstract description 11
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 title claims abstract description 10
- 229910052799 carbon Inorganic materials 0.000 title claims abstract description 10
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- YYRMJZQKEFZXMX-UHFFFAOYSA-N calcium;phosphoric acid Chemical compound [Ca+2].OP(O)(O)=O.OP(O)(O)=O YYRMJZQKEFZXMX-UHFFFAOYSA-N 0.000 claims description 6
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- 241001465754 Metazoa Species 0.000 claims description 3
- BFNBIHQBYMNNAN-UHFFFAOYSA-N ammonium sulfate Chemical compound N.N.OS(O)(=O)=O BFNBIHQBYMNNAN-UHFFFAOYSA-N 0.000 claims description 3
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Abstract
The invention discloses a method for fast growth, high yield and high-efficient carbon capture cultivation of grain sorghum and sudan grass. The method comprises the following steps of using the grain sorghum, sorghum halepense, sudan grass and sorghum moench hybrid seeds for propagation; enlarging the planting area; and by fast propagation, high-yield cultivation, multi-time harvest and timely landfill technologies, cradling for 4-6 times a year, and enabling the yield to reach 90-200T/hm<2>. By using the sorghum plant photosynthesis, the CO2 in the atmosphere can be converted into organic compounds to be filled under the ground, therefore, the negative growth in global carbon emission can be achieved, and the atmospheric greenhouse effect can be reduced; the Earth's ice melt can be choked, the sea-level rise can be controlled, the Earth's climate and biodiversity the maintained, and the life time of the humans on the Earth can be prolonged.
Description
Technical field
The invention belongs to field of plant growing technology, relate to the fast growing of Chinese sorghum and Sudan grass and efficiently catch the carbon cultivation method.
Background technology
Chinese sorghum (Sorghum bicolor (L.) Moench) is grass family sorghum annual herb.Divide by purposes, have grain with, sugar with and grass use Chinese sorghum.During natural plant height fine strain of millet is generally all used, late-maturing large Chinese sorghum, take sugar grass as representative.Output is high, strong stress resistance, and 2～3 meters of plant heights can cradle 2～4 times in 1 year, 5～12 tons of bright careless per mu yields.False Chinese sorghum has another name called Johnson grass, Shi Mao (Sorghum halepense (Linn.) Pers), is the grass family sorghum, perennial Perenniporia martius plantation, temperate zone 1 year.Shi Mao likes illumination, and is high temperature resistant, all can grow in P in soil H4.8～7, grows on fertile, loose soil best, and height can reach 2.5～3m.
Sudan grass (Sorghum sudanense (Piper) Stapf) is grass family sorghum annual herb plant, originates in the Sudan plateau in Africa, now is distributed widely in temperate zone and subtropics, well developed root system buries deeply, stem is upright, and tillering ability is strong, and is drought-enduring, output is high.Under cultivation condition, the bright grass of per mu yield is 8～15 tons, and supplying the grass phase is 6～September.Gao Dancao forms with the hybridization of Chinese sorghum and Sudan grass, combines Sorghum Stalk Diameter, leaf is wide and Sudan grass tillering ability, advantage that regeneration power is strong, and hybrid vigour is very obvious.Can repeatedly cradle in vegetative period in 4～October, liquid manure is sufficient, 15～20 tons of the bright grass of per mu yield.
Natural plant height fine strain of millet, false Chinese sorghum, Sudan grass and other Hybrid of sorghum are all liked illumination, and high temperature resistant, can repeatedly cradle vegetative period, and bright output is high.Also do not utilize the sorghum plant both at home and abroad, the CO that fast-growing, high yield, unit are photosynthesis absorb
2The characteristics such as many are transformed into the organic compound landfill to underground, reduce CO in atmosphere
2The method of content.Progressively reduce the atmosphere greenhouse effect; Control earth ice sheet and melt, control sea-level rise, keep terrestrial climate and bio-diversity; Extend mankind's life span on earth.
Summary of the invention
The present invention is intended to overcome the deficiencies in the prior art, the fast growing of Chinese sorghum and Sudan grass is provided and efficiently catches the carbon cultivation method.
For achieving the above object, technical scheme provided by the invention is: utilize the seed of natural plant height fine strain of millet, false Chinese sorghum, Sudan grass and other Hybrid of sorghum to breed, enlarge cultivated area, by water and fertilizer management, multi-harvest, realize high-yield culturing and science landfill.
Concrete steps are:
(1) Fast-propagation
Prepare in the seedbed
Most natural plant height fine strains of millet, false Chinese sorghum, Sudan grass and other Hybrid seed of sorghum are less, and a little less than pushing up native ability, the land for growing field crops needs intensive cultivation, ground grading.In conjunction with ploughing every mu of organic fertilizer 1000～1500kg, superphosphate 50～100kg, nitrogenous fertilizer 50kg, or every mu of organic fertilizer 1000～1500kg, composite fertilizer 50～75kg.Ploughing depth 20～25cm, and the thin table soil of rake.
Seed treatment
In 4～June, when soil temperature reaches more than 10 ℃, begin sowing.Sandy soil, nonirrigated farmland early sowing, clay, depression late sowing.Sow front 7～15 days, basked seeds 1～2 day; Sowing front 2～3 days, with the water seed soakings of 45～60 ℃ after 0.5～1 hour, is that pile up in the place of 20～30 ℃ in temperature, above plastic covering cloth, water every day 1～2 time; When seed was stacked temperature lower than 15 ℃, the warm water that waters 30～35 ℃ improved kind of a stack temperature, stratification; When seed is stacked temperature higher than 35 ℃, suitably open Polypropylence Sheet, stir kind of a heap, the water that waters 10～20 ℃ reduces kind of a stack temperature, prevents " burning bud ".Open Polypropylence Sheet when the half seed shows money or valuables one carries unintentionally, spread a little seed out, allow at normal temperatures seed practice bud 4～6 hours, note ventilating, prevent that kind of bud moisture content is excessively lost.
Seeding and seedling raising
Before sowing, with clear liquid dung or clear water, the seedbed is bedabbled and soak into, 5～10 kilograms of every mu of seedings in nursery bed in the seedbed, with fine earth lid kind, are advisable the seed uniform broadcasting to lose seed, and blinding thickness 1～3cm is advisable, and the most deeply is no more than 5cm.After planting play shed, use the plastic mulching seedbed.When coming up 1～2 leaf, select and open the shed two ends mulch film 1～2h that ventilates at noon of fine day, later ventilation time is by day increasing; After 2 leaves of seedling, throw off the shed mulch film daytime, cover mulch film evening, after 3～5 days, select fine day temperature stable evening, shed two ends mulch film was opened hardening 5～7 days, except meet continuously overcast and rainy, can remove mulch film; After one week, convert 800～1000kg water with composite fertilizer 10～15kg or clear liquid dung carries out shusher for every mu.
(2) high-yield culturing
Prepare in the land for growing field crops
Before winter the previous year, more than soil was ploughed deeply cultivated 20cm, before transplanting, by the wide ridging of 80～100cm, with the thin leveling of soil rake, ridge length was decided because of landform, and the contour ridging is pressed in the hillside fields.
Transplant in good time
At 25～30 days, during 5～6 leaves, select fine day to transplant when seedling age.Transplant the previous day, the seedbed is irrigated with clear water, that causes when reducing lifting hinders root.
Rational close planting
Seeding row spacing is by 20～30cm х, 30～40cm, and the excavation length and width are the kind plant hole of 15～20cm х, 15～20cm, dark 10～15cm.Fertilizer 1～the 2kg that often spread manuer in holes superphosphate or composite fertilizer 0.1～0.2kg, becomes thoroughly decomposed covers base fertilizer with 2～5cm soil, and 1～2 strain seedling is transplanted in every cave, irrigates normal root water after transplanting, looks into seedling in 5～7 days and mends the root and stem of certain plants.
Rich water quality management
Transplant after 10～15 days seedling and begin to turn blue or green, execute that urea 10～15kg converts 800～1000kg water or clear liquid dung carries out shusher to every strain seedling root for every mu.
Transplant after 20～30 days, carry out intertill and clean tillage, improve the gas permeability of soil.Carry out cultivation and banking before jointing, Feng Hangqian ridging 1～2 time, ridging height 5～10cm, execute urea or composite fertilizer 10～15kg or people and animals' fecaluria 1000～1500kg that becomes thoroughly decomposed in conjunction with cultivation and banking every mu of plant root tillering stage.
The shooting stage growth is the most vigorous, and rich water needs many, once irrigates during Dry land, and sorghum plant intolerant to waterlogging will be with filling with row.When water was irrigated from furrow, range estimation had 10～30% ridge faces to get rid of ponding in furrow when moistening.Poor growth, the field that Huang is thin, stem is thin and delicate, every mu of nitrogen fertilizer application 20～25kg converts 1000～1200kg water or clear liquid dung carries out shusher to root.
The extermination of disease and insect pest
Because repeatedly cradling, the annual growth of plant is all vigorous, and blade is more delicate, is subject to the harm of aphid and snout moth's larva.Anti-eliminating aphis wanted early, is that 40% flolimat emulsion is watered and is diluted to the control of spraying of 500～800 times of liquid with mass ratio, and rear liquid 100～125kg is diluted in every mu of spray.The control snout moth's larva is that 5% phoxim granule is mixed the fine earth of 10 times and spread the heart, the pesticide-clay mixture 5～10kg after every mu of use is mixed thoroughly with mass ratio.Sheath blight disease controlling is when the incidence of disease is 10～20%, be that 5% jinggangmeisu is watered and is diluted to the control of spraying of 500-1000 times of liquid with mass ratio, spray after 10 days 1 time, after each every mu of spray dilution, liquid is 75～100 kilograms again, be sprayed on the site of pathological change of plant middle and lower part.
(3) multi-harvest
Cradle for the first time after jointing, the above toothing 5～10cm of the high 200cm of plant gathers in the crops, and toothing optimum height is 8cm, once cradles at interval of 20～30d later on, can cradle every year 4～6 times.Avoid the rainy day harvesting, occur to reduce damage by disease and insect.Execute that urea or ammonium sulfate are converted 1000～1500kg water or clear liquid dung carries out shusher to root at every turn after cradling, in time carry out intertill and clean tillage, the root and stem of certain plants is protected in ridging.
The seed collecting field does not cradle, the withered flavescence of the colored fringe on stem and part side shoot or redden, seed hardening, results when having pinched motionless with hand.
(4) in good time landfill
The young crops of gathering in the crops after jointing, water content is many, in heapsly deposits easy heating, affects next batch regeneration.Preferably young crops is shifted out the vitellarium, through Exposure to Sunlight 3～5 days, natural seasoning reduced the plant water content, then transported the plant landfill yard to and carry out landfill.
The plant ground matrix section of harvesting in autumn and the later straw of collection seed just can transport the plant landfill yard to and carry out landfill after bundling.
Dirty area in the Changjiang river adopts mulch film seedbed shed to grow seedlings mid-March, early April field-transplanting, late May carries out the 1st time and cradles, and once cradles every 20～30d later on, output can reach 90～200t/hm
2Natural plant height fine strain of millet, false Chinese sorghum, Sudan grass and other Hybrid of sorghum can repeatedly cradle in 1 year, and stem, leaf regeneration period are long, and the demand to nitrogen in a year is large, and it is 1:0.12～0.15:0.5～0.7 that N, P, K absorb ratio.Under high nitrogen level, the disposable base fertilizer that uses sufficient can obviously be put forward output.When cradling more than 3 times, base fertilizer is laid equal stress on topdressing, and topdresses take nitrogenous fertilizer as main.N, P, K see Table 1 to the impact of Sudan grass output.
Table 1 N, P, the K impact on Sudan grass output
Compared with prior art, the beneficial effect of the inventive method is:
The invention discloses the fast growing of Chinese sorghum and Sudan grass and efficiently catch the carbon cultivation method, the method utilizes the seed of natural plant height fine strain of millet, false Chinese sorghum, Sudan grass and other Hybrid of sorghum to breed, enlarge cultivated area, by Fast-propagation, high-yield culturing, multi-harvest and in good time Landfill, can cradle every year 4～6 times, make output reach 90～200t/hm
2Utilize the sorghum photosynthesis of plant with the CO in atmosphere
2Be transformed into the organic compound landfill under the stratum, realize Global Carbon discharge capacity negative growth, reduce the atmosphere greenhouse effect; Control earth ice sheet and melt, control sea-level rise, keep terrestrial climate and bio-diversity; Extend mankind's life span on earth.
Embodiment
Further explain and illustrate technical scheme of the present invention below in conjunction with embodiment:
Utilize the seed of Chinese sorghum and Sudan grass to breed, enlarge cultivated area, by water and fertilizer management, multi-harvest, realize high-yield culturing and science landfill.
Embodiment 1
Concrete steps are as follows:
One, Fast-propagation
(1) prepare in the seedbed
Most natural plant height fine strains of millet, false Chinese sorghum, Sudan grass and other Hybrid seed of sorghum are less, and a little less than pushing up native ability, the land for growing field crops needs intensive cultivation, ground grading.In conjunction with ploughing every mu of organic fertilizer 1000～1500kg, superphosphate 50～100kg, nitrogenous fertilizer 50kg, or every mu of organic fertilizer 1000～1500kg, composite fertilizer 50～75kg.Ploughing depth 20～25cm, and the thin table soil of rake.
(2) seed treatment
In 4～June, when soil temperature reaches more than 10 ℃, begin sowing.Sandy soil, nonirrigated farmland early sowing, clay, depression late sowing.Sow front 7～15 days, basked seeds 1～2 day; Sowing front 2～3 days, with the water seed soakings of 45～60 ℃ after 0.5～1 hour, is that pile up in the place of 20～30 ℃ in temperature, above plastic covering cloth, water every day 1～2 time; When seed was stacked temperature lower than 15 ℃, the warm water that waters 30～35 ℃ improved kind of a stack temperature, stratification; When seed is stacked temperature higher than 35 ℃, suitably open Polypropylence Sheet, stir kind of a heap, the water that waters 10～20 ℃ reduces kind of a stack temperature, prevents " burning bud ".Open Polypropylence Sheet when the half seed shows money or valuables one carries unintentionally, spread a little seed out, allow at normal temperatures seed practice bud 4～6 hours, note ventilating, prevent that kind of bud moisture content is excessively lost.
(3) seeding and seedling raising
Before sowing, with clear liquid dung or clear water, the seedbed is bedabbled and soak into, 5～10 kilograms of every mu of seedings in nursery bed in the seedbed, with fine earth lid kind, are advisable the seed uniform broadcasting to lose seed, and blinding thickness 1～3cm is advisable, and the most deeply is no more than 5cm.After planting play shed, use the plastic mulching seedbed.When coming up 1～2 leaf, select and open the shed two ends mulch film 1～2h that ventilates at noon of fine day, later ventilation time is by day increasing; After 2 leaves of seedling, throw off the shed mulch film daytime, cover mulch film evening, after 3～5 days, select fine day temperature stable evening, shed two ends mulch film was opened hardening 5～7 days, except meet continuously overcast and rainy, can remove mulch film; After one week, convert 800～1000kg water with composite fertilizer 10～15kg or clear liquid dung carries out shusher for every mu.
Two, high-yield culturing
(1) prepare in the land for growing field crops
Before winter the previous year, more than soil was ploughed deeply cultivated 20cm, before transplanting, by the wide ridging of 80～100cm, with the thin leveling of soil rake, ridge length was decided because of landform, and the contour ridging is pressed in the hillside fields.
(2) transplant in good time
At 25～30 days, during 5～6 leaves, select fine day to transplant when seedling age.Transplant the previous day, the seedbed is irrigated with clear water, that causes when reducing lifting hinders root.
(3) rational close planting
Seeding row spacing is by 20～30cm х, 30～40cm, and the excavation length and width are the kind plant hole of 15～20cm х, 15～20cm, dark 10～15cm, the soil depletion rational close planted, and fertile soil is thin planting a little.Fertilizer 1～the 2kg that often spread manuer in holes superphosphate or composite fertilizer 0.1～0.2kg, becomes thoroughly decomposed covers base fertilizer with 2～5cm soil, and 1～2 strain seedling is transplanted in every cave, irrigates normal root water after transplanting, looks into seedling in 5～7 days and mends the root and stem of certain plants.
(4) rich water quality management
Transplant after 10～15 days seedling and begin to turn blue or green, execute that urea 10～15kg converts 800～1000kg water or clear liquid dung carries out shusher to every strain seedling root for every mu.
Transplant after 20～30 days, carry out intertill and clean tillage, improve the gas permeability of soil.Carry out cultivation and banking before jointing, Feng Hangqian ridging 1～2 time, ridging height 5～10cm, execute urea or composite fertilizer 10～15kg or people and animals' fecaluria 1000～1500kg that becomes thoroughly decomposed in conjunction with cultivation and banking every mu of plant root tillering stage.
The shooting stage growth is the most vigorous, and rich water needs many, once irrigates during Dry land, and sorghum plant intolerant to waterlogging will be with filling with row.When water was irrigated from furrow, range estimation had 10～30% ridge faces to get rid of ponding in furrow when moistening.Poor growth, the field that Huang is thin, stem is thin and delicate, every mu of nitrogen fertilizer application 20～25kg converts 1000～1200kg water or clear liquid dung carries out shusher to root.
(5) extermination of disease and insect pest
Because repeatedly cradling, the annual growth of plant is all vigorous, and blade is more delicate, is subject to the harm of aphid and snout moth's larva.Anti-eliminating aphis wanted early, is that 40% flolimat emulsion is watered and is diluted to the control of spraying of 500～800 times of liquid with mass ratio, and rear liquid 100～125kg is diluted in every mu of spray.The control snout moth's larva is that 5% phoxim granule is mixed the fine earth of 10 times and spread the heart, the pesticide-clay mixture 5～10kg after every mu of use is mixed thoroughly with mass ratio.Sheath blight disease controlling is when the incidence of disease is 10～20%, be that 5% jinggangmeisu is watered and is diluted to the control of spraying of 500-1000 times of liquid with mass ratio, spray after 10 days 1 time, after each every mu of spray dilution, liquid is 75～100 kilograms again, be sprayed on the site of pathological change of plant middle and lower part.
Three, multi-harvest
Cradle for the first time after jointing, the above toothing 5～10cm of the high 200cm of plant gathers in the crops, and toothing optimum height is 8cm, once cradles at interval of 20～30d later on, can cradle every year 4～6 times.Avoid the rainy day harvesting, occur to reduce damage by disease and insect.Execute that urea or ammonium sulfate are converted 1000～1500kg water or clear liquid dung carries out shusher to root at every turn after cradling, in time carry out intertill and clean tillage, the root and stem of certain plants is protected in ridging.
The seed collecting field does not cradle, the withered flavescence of the colored fringe on stem and part side shoot or redden, seed hardening, results when having pinched motionless with hand.
Four, in good time landfill
The young crops of gathering in the crops after jointing, water content is many, in heapsly deposits easy heating, affects next batch regeneration.Preferably young crops is shifted out the vitellarium, through Exposure to Sunlight 3～5 days, natural seasoning reduced the plant water content, then transported the plant landfill yard to and carry out landfill.
The plant ground matrix section of harvesting in autumn and the later straw of collection seed just can transport the plant landfill yard to and carry out landfill after bundling.
Claims (4)
- The fast growing of Chinese sorghum and Sudan grass with efficiently catch the carbon cultivation method, it is characterized in that, described method comprises following content: carry out vegetative propagation with rhizome, adopt proprietary Fast-propagation, high-yield culturing, multi-harvest and science Landfill, realize fast-growing, high yield and the efficient carbon landfill admittedly of Chinese sorghum and Sudan grass.
- 2. the method for claim 1, is characterized in that, described method comprises the steps:(1) Fast-propagationIn conjunction with ploughing every mu of organic fertilizer 1000～1500kg, superphosphate 50～100kg, nitrogenous fertilizer 50kg, or every mu of organic fertilizer 1000～1500kg, composite fertilizer 50～75kg; Ploughing depth 20～25cm, and the thin table soil of rake; In 4～June, when soil temperature reaches more than 10 ℃, begin sowing; Sowing front 2～3 days, with the water seed soakings of 45～60 ℃ after 0.5～1 hour, is that pile up in the place of 20～30 ℃ in temperature, above plastic covering cloth, water every day 1～2 time; When seed was stacked temperature lower than 15 ℃, the warm water that waters 30～35 ℃ improved kind of a stack temperature, stratification; When seed is stacked temperature higher than 35 ℃, suitably open Polypropylence Sheet, stir kind of a heap, the water that waters 10～20 ℃ reduces kind of a stack temperature, prevents " burning bud "; Open Polypropylence Sheet when the half seed shows money or valuables one carries unintentionally, spread a little seed out, allow at normal temperatures seed practice bud 4～6 hours;Before sowing, with clear liquid dung or clear water, the seedbed is bedabbled and soak into, 5～10 kilograms of every mu of seedings in nursery bed in the seedbed, with fine earth lid kind, are advisable the seed uniform broadcasting to lose seed, and blinding thickness 1～3cm is advisable, and the most deeply is no more than 5cm; After planting play shed, use the plastic mulching seedbed; When coming up 1～2 leaf, select and open the shed two ends mulch film 1～2h that ventilates at noon of fine day, later ventilation time is by day increasing; After 2 leaves of seedling, throw off the shed mulch film daytime, cover mulch film evening, after 3～5 days, select fine day temperature stable evening, shed two ends mulch film was opened hardening 5～7 days, except meet continuously overcast and rainy, can remove mulch film; After one week, convert 800～1000kg water with composite fertilizer 10～15kg or clear liquid dung carries out shusher for every mu;(2) high-yield culturingBefore winter the previous year, more than soil was ploughed deeply cultivated 20cm, before transplanting, by the wide ridging of 80～100cm, with the thin leveling of soil rake, ridge length was decided because of landform, and the contour ridging is pressed in the hillside fields; At 25～30 days, during 5～6 leaves, select fine day to transplant when seedling age; Transplant the previous day, the seedbed is irrigated with clear water, that causes when reducing lifting hinders root; Seeding row spacing is by 20～30cm х, 30～40cm, and the excavation length and width are the kind plant hole of 15～20cm х, 15～20cm, dark 10～15cm; Fertilizer 1～the 2kg that often spread manuer in holes superphosphate or composite fertilizer 0.1～0.2kg, becomes thoroughly decomposed covers base fertilizer with 2～5cm soil, and 1～2 strain seedling is transplanted in every cave, irrigates normal root water after transplanting, looks into seedling in 5～7 days and mends the root and stem of certain plants;Transplant after 10～15 days seedling and begin to turn blue or green, execute that urea 10～15kg converts 800～1000kg water or clear liquid dung carries out shusher to every strain seedling root for every mu; Transplant after 20～30 days, carry out intertill and clean tillage, improve the gas permeability of soil;Carry out cultivation and banking before jointing, Feng Hangqian ridging 1～2 time, ridging height 5～10cm, execute urea or composite fertilizer 10～15kg or people and animals' fecaluria 1000～1500kg that becomes thoroughly decomposed in conjunction with cultivation and banking every mu of plant root tillering stage; The shooting stage growth is the most vigorous, and rich water needs many, once irrigates during Dry land, and sorghum plant intolerant to waterlogging will be with filling with row;When water was irrigated from furrow, range estimation had 10～30% ridge faces to get rid of ponding in furrow when moistening; Poor growth, the field that Huang is thin, stem is thin and delicate, every mu of nitrogen fertilizer application 20～25kg converts 1000～1200kg water or clear liquid dung carries out shusher to root;Anti-eliminating aphis wanted early, is that 40% flolimat emulsion is watered and is diluted to the control of spraying of 500～800 times of liquid with mass ratio, and rear liquid 100～125kg is diluted in every mu of spray; The control snout moth's larva is that 5% phoxim granule is mixed the fine earth of 10 times and spread the heart, the pesticide-clay mixture 5～10kg after every mu of use is mixed thoroughly with mass ratio; The control of banded sclerotial blight is when the incidence of disease is 10～20%, be that 5% jinggangmeisu is watered and is diluted to the control of spraying of 500-1000 times of liquid with mass ratio, spray after 10 days 1 time, after each every mu of spray dilution, liquid is 75～100 kilograms again, be sprayed on the site of pathological change of plant middle and lower part;(3) multi-harvestCradle for the first time after jointing, the above toothing 5～10cm of the high 200cm of plant gathers in the crops, and once cradles at interval of 20～30d later on, can cradle every year 4～6 times; Avoid the rainy day harvesting, occur to reduce damage by disease and insect; Execute that urea or ammonium sulfate are converted 1000～1500kg water or clear liquid dung carries out shusher to root at every turn after cradling, in time carry out intertill and clean tillage, the root and stem of certain plants is protected in ridging; The seed collecting field does not cradle, the withered flavescence of the colored fringe on stem and part side shoot or redden, seed hardening, results when having pinched motionless with hand;(4) in good time landfillThe young crops of gathering in the crops after jointing, water content is many, in heapsly deposits easy heating, affects next batch regeneration; Preferably young crops is shifted out the vitellarium, through Exposure to Sunlight 3～5 days, natural seasoning reduced the plant water content, then transported the plant landfill yard to and carry out landfill; The plant ground matrix section of harvesting in autumn and the later straw of collection seed just can transport the plant landfill yard to and carry out landfill after bundling.
- 3. method as claimed in claim 2, is characterized in that, seeding row spacing is by 20 х 30cm on dead soil for the described Chinese sorghum of step (2) and Sudan grass, and on fertile soil, seeding row spacing is by 30 х 40cm, and the excavation length and width are the kind plant hole of 15 х 20cm, dark 15cm.
- 4. method as claimed in claim 2, is characterized in that, the described Chinese sorghum of step (3) and Sudan grass toothing 8cm cradle, and can cradle every year 3 times, and output is high.
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