CN104145687A - Method for cultivating sweet potato seedlings - Google Patents
Method for cultivating sweet potato seedlings Download PDFInfo
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- CN104145687A CN104145687A CN201410417651.0A CN201410417651A CN104145687A CN 104145687 A CN104145687 A CN 104145687A CN 201410417651 A CN201410417651 A CN 201410417651A CN 104145687 A CN104145687 A CN 104145687A
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Abstract
The invention discloses a method for cultivating sweet potato seedlings, and the planting time is from the middle ten days of November every year to the June the next year. The method comprises the following steps that (1) a ploughed field is ridged; (2) preprocessing is carried out on shorn sweet potato seedlings, the sweet potato seedlings on every two adjacent ridges are planted oppositely, and then the sweet potato seedlings are watered; (3) when the outdoor temperature is lower than or equal to15 DEG C, a tunnel is built between every two adjacent ridges with bamboo sticks, the tunnels are covered with films, and the films are removed when the outdoor temperature keeps at 25 DEG C or above. Through the method for cultivating sweet potato seedlings, the planting time of spring sweet potatoes is advanced by 20-30 d compared with a potato block seedling cultivation method, the breeding frequency of sweet potato seedlings is increased, yield of the sweet potato seedlings is increased, cultivation of new species is further facilitated, a large number of seedlings can be cultivated within a short time through the method, and the application and popularization speed is improved. In addition, the method can improve the survival and growth capacity of sweet potatoes at low temperature and further improve the utilization rate of land.
Description
Technical field
The present invention relates to agricultural technology field, a kind of method that particularly sweet potato is grown seedlings.
Background technology
Sweet potato root tuber can be edible, and it originates in tropical Central America, and vigorous, the stable high yield of growing, easily breeds breeding, is all widely cultivated in a lot of areas of China.Nowadays China can utilize arable area to reduce gradually, and cultivation, breeding and the physiological Study of sweet potato deepen continuously, and agricultural and tourist industry are constantly flourish, and the health food of sweet potato also continues to bring out, so the concerned Chengdu of sweet potato constantly increases.
The cultivation of sweet potato first obtains potato seedling by climing etc. the breeding of piece root, stem conventionally, then potato seedling is implanted to land for growing field crops, and it is main climing that the top continuous elongation of potato seedling forms, and axillary bud growth forms numerous lateral bines simultaneously, and main climing and lateral bine is along landing ground sprawl growth.Treat sweet potato stem tuber maturation, the tendril of sweet potato can be gathered in and return to feed pigs etc.
2,800,000 mu of the existing sweet potato areas in Guangxi Zhuang Autonomous Region, area, south, osmanthus is the sweet potato main producing region of this province.In the past, the seedling raising manners in this region is to adopt open country epiphragma technology spring.Adopt that open country epiphragma technical operation is convenient, small investment spring, but seedling-growing time evening, output of seedling are few, can not meet the supply of spring potato seedling.For Sweetpotato, less because of its potato seed amount, new varieties are more difficult provides a large amount of seedlings early, so how can provide to greatest extent the problem of the seed of spring potato seedling to need solution badly simultaneously.
Summary of the invention
Implantation time of the present invention is that annual the middle ten days November is to June next year, for winter low temperature overlong time, sweet potato seedling is subject to damage to plants caused by sudden drop in temperature the problem such as death, growth retardation at this season, invent a kind of method that sweet potato is grown seedlings, be intended to solve the sweet potato potato seedling survival and growth problem under low-temperature condition in the winter time.
For solving the problems of the technologies described above, technical solution of the present invention is as follows:
The method that sweet potato is grown seedlings, the method comprises following operating procedure:
(1) ridging is started in the soil after ploughing;
(2) the sweet potato seedling shearing is carried out to pretreatment, plant in opposite directions on two adjacent ridges, then waters normal root water;
(3), in the time of outdoor temperature≤15 DEG C, adopt bamboo let to build shed between two ridges, and cover film, when outdoor temperature is stabilized in 25 DEG C and throw off film when above.
The method that sweet potato is grown seedlings, its more detailed step is:
(1) choose the not soil of sweet potato planting of a season, soil is ploughed after smooth and started ridging, the high 25～35cm in ridge, ridge top width 20～30cm;
(2) the sweet potato seedling shearing is carried out to pretreatment, taking the distance between two long limits in the plane of top, ridge as benchmark, at a back gauge 1/3 place's trench digging in two long limits, ditch depth 8～12cm, when plantation, keep sweet potato seedling bury joint number be 3～4 joint, then cover sweet potato seedling root from fetching earth at the bottom of ridge, make its root earth equal with top, ridge, sweet potato seedling is pushed up 1/3 planar sequence and tilts to put to ridge by the trench digging place of burying, every strain spacing 19～21cm, plant in opposite directions on two adjacent ridges, put inwardly on the sweet potato seedling top that is adjacent two ridges, then water sufficient normal root water, 15～20d fertilising after planting, every mu of sealing fertilizer 30kg,
(3) in the time of outdoor temperature≤15 DEG C, adopt bamboo let to build shed between two ridges, and cover film, when cover film, prevent that sweet potato seedling from contacting with film, when soil moisture content≤50%, water in time in shed, when outdoor temperature is stabilized in 25 DEG C and throw off film when above.
Wherein, in step (1), also comprise before ridging, the farmyard manure that 600～700kg is put on every mu of ground mixes with the earth in soil, soil is turned over plough, hack, is leveled land simultaneously.
Wherein, the sweet potato seedling described in step (2) is the potato seedling that the tendril of autumn administration is then cut into, wherein 3～4 of every strain tendril clips.
Wherein, the sweet potato seedling length shearing described in step (2) is 20～30cm, and it is 7～8 joints that sweet potato seedling is chosen tendril joint number, and seedling diameter is 5～8cm, and seedling length of internode is 3～5cm.
Wherein, the sweet potato seedling pretreatment described in step (2) is to be 1.25～2g/L by the sweet potato seedling mass percentage concentration cutting zineb solution soaks 4～6min.
Wherein, described zineb solution is that mass percentage concentration is that 65～80% Zineb wettable powder adds water formulated.
Wherein, the high 25～35cm in ridge, ridge top width 20～30cm, between every ridge at a distance of 80～100cm.
Beneficial effect of the present invention:
Adopt the inventive method to grow seedlings to sweet potato, the potato interpolation phase in spring grows seedlings and shifts to an earlier date 20～30d than potato piece, can increase potato seedling breeding number of times simultaneously, increases potato seedling output; Further, for newly educating kind, adopt the inventive method can breed at short notice a large amount of seedlings, improve the speed of applying.And the present invention can improve the sweet potato potato seedling survival rate under low-temperature condition in the winter time, further improve land utilization rate.
Brief description of the drawings
Accompanying drawing 1 is the sweet potato of the present invention schematic diagram of growing seedlings.
Embodiment
Further describe the present invention referring to embodiment, to make those skilled in the art can implement according to this with reference to specification word, protection domain of the present invention is not limited by embodiments of the present invention.Sweet potato breeds initial time: from then about mid-November, until the June of next year.Sweet potato seedling used is the potato tendril of autumn then.
Embodiment 1
Choose that fertile soil, draining are good, traffic convenience and convenient management plot, forbid to select the soil of planting sweet potato last year to make nursery, in order to avoid mix.Apply the farmyard manure becoming thoroughly decomposed and make base manure, every mu of mixed farmyard manure 600kg, after then turning over plough, hack, leveling land, adopts sweet potato ridger to start ridging, spacing 80cm between every ridge, and the high 30cm in ridge, ridge top width degree 20～30cm.
The clip of sweet potato seedling and pretreatment: top strong sprout of choosing that uniformity grows fine is as seedling, 3～4 of every strain clips, seedling diameter is 5～8cm, seedling segmentum intercalaris length is 3～5cm, every strain sweet potato tendril clip length be 20～30cm as a strain sweet potato seedling, make gained sweet potato seedling start from top joint number 7～8 joint be as the criterion.Then the Zineb wettable powder that is 65% by mass percentage concentration adds water, and is diluted to the aqueous solution that mass percentage concentration is 2g/L, by this aqueous solution soaking sterilization 4min for sweet potato seedling, to reach sterilization effect.
The plantation of sweet potato seedling: adopt hoe to open the ditch of dark 8～12cm at plane 1/3 place, top, ridge, when plantation, keep sweet potato seedling bury joint number be 3～4 joint, then cover sweet potato seedling root from fetching earth at the bottom of ridge, make sweet potato seedling root earth equal with top, ridge, sweet potato seedling is pushed up 1/3 planar sequence and tilts to put to ridge by the trench digging place of burying, every strain spacing 19cm when sweet potato planting seedling, plant in opposite directions on two adjacent ridges, put inwardly on the sweet potato seedling top that is adjacent two ridges, then water sufficient normal root water, 15d fertilising after planting, every mu of sealing fertilizer 30kg.
Management after planting: in December, when 14 DEG C of temperature, adopt the bamboo let that length is 3.2m, build little shed between Liang Long, and cover film, reach the effect of insulation frost protection, prevent when cover film that sweet potato seedling from contacting with film.Hypothermic phase keeps the integrality of shed film in the winter time, reduces frostbite potato seedling in order to avoid breakage of thin film applied causes encircleing temperature of shed.The simultaneously humidity of soil in shed in winter, soil moisture content will be watered lower than 50% time in time, keeps soil moisture.To March beginning of spring next year, when temperature is stabilized in more than 25 DEG C, throw off in time film, remove shed, and weeding, fertilising, ridging, use urea 5kg for every mu, composite fertilizer 15kg.As lower in soil moisture, need water and keep seedbed moistening, sufficient moisture can promote the growth of potato seedling.
Cut seedling: take off film about 30 days, sweet potato seedling length can be cut seedling at 40～50cm.Cutting for the first time seedling should be timely, and the impact that can eliminate apical dominance increases branch amount simultaneously, increases potato seedling output.After cutting for the first time seedling, use in time composite fertilizer and water, promoting potato seedling Fast Growth.Use composite fertilizer 5kg for every mu, every 200 young plants are bundled into a bundle, put shady and cool place, in order to avoid hyperthermal injury seedling.
Embodiment 2
Choose that fertile soil, draining are good, traffic convenience and convenient management plot, forbid to select the soil of planting sweet potato last year to make nursery, in order to avoid mix.Apply the farmyard manure becoming thoroughly decomposed and make base manure, every mu of mixed farmyard manure 700kg, after then turning over plough, hack, leveling land, adopts sweet potato ridger to start ridging, spacing 100cm between every ridge, and the high 30cm in ridge, ridge top width degree 20～30cm.
The clip of sweet potato seedling and pretreatment: top strong sprout of choosing that uniformity grows fine is as seedling, 3～4 of every strain clips, seedling diameter is 5～8cm, seedling segmentum intercalaris length is 3～5cm, every strain sweet potato tendril clip length be 20～30cm as a strain sweet potato seedling, make gained sweet potato seedling start from top joint number 7～8 joint be as the criterion.Then the Zineb wettable powder that is 70% by mass percentage concentration adds water, and is diluted to the aqueous solution that mass percentage concentration is 1.25g/L, by this aqueous solution soaking sterilization 6min for sweet potato seedling, to reach sterilization effect.
The plantation of sweet potato seedling: adopt hoe to open the ditch of dark 8～12cm at plane 1/3 place, top, ridge, when plantation, keep sweet potato seedling bury joint number be 3～4 joint, then cover sweet potato seedling root from fetching earth at the bottom of ridge, make sweet potato seedling root earth equal with top, ridge, sweet potato seedling is pushed up 12/3 planar sequence and tilts to put to ridge by the trench digging place of burying, every strain spacing 21cm when sweet potato planting seedling, plant in opposite directions on two adjacent ridges, put inwardly on the sweet potato seedling top that is adjacent two ridges, then water sufficient normal root water, 15～20d fertilising after planting, every mu of sealing fertilizer 30kg.
Management after planting: in December, when 15 DEG C of temperature, adopt the bamboo let that length is 3.2m, build little shed between Liang Long, and cover film, reach the effect of insulation frost protection, prevent when cover film that sweet potato seedling from contacting with film.Hypothermic phase keeps the integrality of shed film in the winter time, reduces frostbite potato seedling in order to avoid breakage of thin film applied causes encircleing temperature of shed.The simultaneously humidity of soil in shed in winter, soil moisture content will be watered lower than 50% time in time, keeps soil moisture.To March beginning of spring next year, when temperature is stabilized in more than 25 DEG C, throw off in time film, remove shed, and weeding, fertilising, ridging, use urea 5kg for every mu, composite fertilizer 15kg.As lower in soil moisture, need water and keep seedbed moistening, sufficient moisture can promote the growth of potato seedling.Cut seedling: take off film about 30 days, sweet potato seedling length can be cut seedling at 40～50cm.Cutting for the first time seedling should be timely, and the impact that can eliminate apical dominance increases branch amount simultaneously, increases potato seedling output.After cutting for the first time seedling, use in time composite fertilizer and water, promoting potato seedling Fast Growth.Use composite fertilizer 5kg for every mu, every 200 young plants are bundled into a bundle, put shady and cool place, in order to avoid hyperthermal injury seedling.
Embodiment 3
Choose that fertile soil, draining are good, traffic convenience and convenient management plot, forbid to select the soil of planting sweet potato last year to make nursery, in order to avoid mix.Apply the farmyard manure becoming thoroughly decomposed and make base manure, every mu of mixed farmyard manure 650kg, after then turning over plough, hack, leveling land, adopts sweet potato ridger to start ridging, spacing 90cm between every ridge, and the high 30cm in ridge, ridge top width degree 20～30cm.
The clip of sweet potato seedling and pretreatment: top strong sprout of choosing that uniformity grows fine is as seedling, 3～4 of every strain clips, seedling diameter is 5～8cm, seedling segmentum intercalaris length is 3～5cm, every strain sweet potato tendril clip length be 20～30cm as a strain sweet potato seedling, make gained sweet potato seedling start from top joint number 7～8 joint be as the criterion.Then the Zineb wettable powder that is 80% by mass percentage concentration adds water, and is diluted to the aqueous solution that mass percentage concentration is 1.70g/L, by this aqueous solution soaking sterilization 5min for sweet potato seedling, to reach sterilization effect.
The plantation of sweet potato seedling: adopt hoe to open the ditch of dark 8～12cm at plane 1/3 place, top, ridge, when plantation, keep sweet potato seedling bury joint number be 3～4 joint, then cover sweet potato seedling root from fetching earth at the bottom of ridge, make sweet potato seedling root earth equal with top, ridge, sweet potato seedling is pushed up 1/3 planar sequence and tilts to put to ridge by the trench digging place of burying, every strain spacing 20cm when sweet potato planting seedling, plant in opposite directions on two adjacent ridges, put inwardly on the sweet potato seedling top that is adjacent two ridges, then water sufficient normal root water, 17d fertilising after planting, every mu of sealing fertilizer 30kg.
Management after planting: in December,, adopt the bamboo let that length is 3.2m when the temperature≤15 DEG C, build little shed between Liang Long, and cover film, reach the effect of insulation frost protection, prevent when cover film that sweet potato seedling from contacting with film.Hypothermic phase keeps the integrality of shed film in the winter time, reduces frostbite potato seedling in order to avoid breakage of thin film applied causes encircleing temperature of shed.The simultaneously humidity of soil in shed in winter, soil moisture content will be watered lower than 50% time in time, keeps soil moisture.To March beginning of spring next year, when temperature is stabilized in more than 25 DEG C, throw off in time film, remove shed, and weeding, fertilising, ridging, use urea 5kg for every mu, composite fertilizer 15kg.As lower in soil moisture, need water and keep seedbed moistening, sufficient moisture can promote the growth of potato seedling.Cut seedling: take off film about 30 days, sweet potato seedling length can be cut seedling at 40～50cm.Cutting for the first time seedling should be timely, and the impact that can eliminate apical dominance increases branch amount simultaneously, increases potato seedling output.After cutting for the first time seedling, use in time composite fertilizer and water, promoting potato seedling Fast Growth.Use composite fertilizer 5kg for every mu, every 200 young plants are bundled into a bundle, put shady and cool place, in order to avoid hyperthermal injury seedling.
2013 Nian Ben researchers, taking No. 3, cassia lignea flour as subjects, carry out seedling breeding test, test area 80m
2, planting density 3300 strains/667m
2, cut seedling interval spring and cut seedling once in 15 days.Result of the test shows: breed potato seedling (1) winter and cut for the first time seedling from April 1st, 2014,15 days interval times, by the end of May, accumulative total is cut seedling 4 times, cuts altogether seedling 8000 strains in cut-off, and average every strain single is cut seedling 5 strains.(2) the potato seedling of clip is educated again again, for every test seedling of sweet potato in autumn, according to 1:5 reproduction coefficient, can cut seedling 40000 strains.(3) according to test area 80m
2, plant seedling 400 strains and calculate, to educate again through twice, potato seedling has expanded 100 times.
Adopt the inventive method to grow seedlings to sweet potato, the potato interpolation phase in spring grows seedlings and shifts to an earlier date 20～30d than potato piece, can increase potato seedling breeding number of times simultaneously, increases potato seedling output; Further, for newly educating kind, adopt the inventive method can breed at short notice a large amount of seedlings, improve the speed of applying.And the present invention can improve the sweet potato potato seedling survival rate under low-temperature condition in the winter time, further improve land utilization rate.
Claims (7)
1. the method that sweet potato is grown seedlings, is characterized in that, the method comprises following operating procedure:
(1) ridging is started in the soil after ploughing;
(2) the sweet potato seedling shearing is carried out to pretreatment, plant in opposite directions on two adjacent ridges, then waters normal root water;
(3), in the time of outdoor temperature≤15 DEG C, adopt bamboo let to build shed between two ridges, and cover film, when outdoor temperature is stabilized in 25 DEG C and throw off film when above.
2. the method that sweet potato is grown seedlings according to claim 1, is characterized in that: in step (1), also comprise before ridging, the farmyard manure that 600～700kg is put on every mu of ground mixes with the earth in soil, soil is turned over plough, hack, is leveled land simultaneously.
3. the method that sweet potato is grown seedlings according to claim 1, is characterized in that: the sweet potato seedling described in step (2) is by the potato seedling that the tendril of autumn potato is cut into then, wherein 3～4 of every strain tendril clips.
4. the method that sweet potato is grown seedlings according to claim 1, is characterized in that: the sweet potato seedling length shearing described in step (2) is that 20～30cm, joint number are 7～8 joints, and seedling diameter is 5～8cm, and seedling length of internode is 3～5cm.
5. the method that sweet potato is grown seedlings according to claim 1, is characterized in that: the zineb solution that the sweet potato seedling pretreatment described in step (2) is is 1.25～2g/L by the sweet potato seedling mass percentage concentration shearing soaks 4～6min.
6. the method that sweet potato is grown seedlings according to claim 5, is characterized in that: described zineb solution is that mass percent concentration is that 65～80% Zineb wettable powder adds water formulated.
7. the method that sweet potato is grown seedlings according to claim 1, is characterized in that: the high 28～32cm in ridge, ridge top width 20～30cm, between every ridge at a distance of 80～100cm.
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104472178A (en) * | 2014-12-05 | 2015-04-01 | 宜昌市农业技术推广中心 | High-yield sweet potato cultivation method and seedbed for raising seedlings |
| CN107439178A (en) * | 2017-07-31 | 2017-12-08 | 湖北省农业科学院粮食作物研究所 | A kind of sweet potato sprout long distance transportation method |
| CN107484527A (en) * | 2017-09-08 | 2017-12-19 | 安徽省阜阳永祥良种服务有限责任公司 | A kind of breeding method of sweet potato seedling |
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| CN107439178A (en) * | 2017-07-31 | 2017-12-08 | 湖北省农业科学院粮食作物研究所 | A kind of sweet potato sprout long distance transportation method |
| CN107484527A (en) * | 2017-09-08 | 2017-12-19 | 安徽省阜阳永祥良种服务有限责任公司 | A kind of breeding method of sweet potato seedling |
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Application publication date: 20141119 |