CN103392574B - Method for growing seedlings by using intermittent flow type nutrient liquid film - Google Patents
Method for growing seedlings by using intermittent flow type nutrient liquid film Download PDFInfo
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- CN103392574B CN103392574B CN201310333469.2A CN201310333469A CN103392574B CN 103392574 B CN103392574 B CN 103392574B CN 201310333469 A CN201310333469 A CN 201310333469A CN 103392574 B CN103392574 B CN 103392574B
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Abstract
The invention relates to a method for growing seedlings by using an intermittent flow type nutrient liquid film. The method for growing the seedlings by using the intermittent flow type nutrient liquid film is characterized by including the step (1) of selection of a seedling growing mode and the step (2) of water and fertilizer management. By means of the method, a nutrient solution can be supplied intermittently, fertilizer is supplied step by step, fertilizer saving is achieved, and diseases and weak seedlings due to overfertilization can be avoided; due to the fact that a wetting and drying alternation seedling growing method is adopted, the long seedling recovery time after root system strongly-aquatic seedlings are transplanted is avoided, and fertilizer waste and environmental pollution due to water draining and seedling hardening are also avoided.
Description
Technical field
The present invention relates to growing seedlings of grain and economic crops, relate in particular to a kind of seedling-cultivating method that adopts intermittent flow dynamic formula nutrient film.
Background technology
At present, growing seedlings of the crops such as flowers, vegetables, tobacco, cotton, fruit and grain adopts two-part mostly, cold area especially in early spring season.So-called two-part first brings out seedling with high density grid dish in culture facility, then seedling is heeled in relatively large grid dish, then selects floating seedlings, moistening grow seedlings or the mode of seedling nursing in shallow water continues to be bred as seedling.
Floating seedlings is as a newer seedling-cultivating method, refer to the foam cave dish that lightweight seedling medium is housed is floated on the water surface, seed is sowed in matrix, and rice shoot is taken root growth in seedling medium, and can from matrix and water bed, absorb the seedling-cultivating method of moisture and nutrient.The method be owing to floating on foam cave dish on the water surface, and therefore this mode water requirement of growing seedlings is large.In addition, the later stage need all be discharged the hardening of cutting off the water supply by larval rearing water, and the fertilizer in water is also discharged in environment, has caused the waste of water and fertilizer, contaminated environment.This seedling raising manners, rice shoot root system long term growth is in the environment of moisture abundance, and therefore the aquatic property of root system is strong, and after transplanting, adaptive capacity is poor, and seedling-slowing stage is long.The comparatively cold area in season of growing seedlings in early spring, adopts floating seedlings to be difficult to bring out to supply land for growing field crops and transplants in good time of the right age strong sprout.
Seedling nursing in shallow water refers to that by seed sowing, in being equipped with in the raising tray hole of matrix, raising tray is emitted in the nursery pond of the dark nutrient solution of 1～2 cm, sustainable supply liquid manure, and seedlings root prosperity, realizes anosis growing seedlings.This seedling raising manners nutrient solution water layer is shallow, seedbed quick heating, and seed sprouting is fast.But this mode adds water frequently, and the amount of labour used is large, and production cost is high; Because pallet is not floating, therefore leaf-cutting difficulty.
In production, often there is the moistening seedling raising manners of employing to grow seedlings.This method is watered from top to bottom and is spilt nutrient solution, and not only labour intensity is large, production cost is high, easily causes soil compaction, fertilizer to be easily leached and causes waste, environmental pollution, plant susceptible disease.Modern soilless culture nutrient fluid membrane technology (Nutrient Film Technique, NFT) refer to that nutrient solution flows to a kind of water culture technology of the lower other end in planting groove from higher one end with the mobile form of shallow-layer, it has the feature of the production management of being easy to.Though nutrient film technology can solve the problem such as soil compaction and fertilizer leaching, in actual applications, its production facility is comparatively complicated, cost is higher, is difficult to meet large area agricultural production demand for modern nutrient film technology.
Summary of the invention
The object of the present invention is to provide a kind of seedling-cultivating method that adopts intermittent flow dynamic formula nutrient film, this seedling-cultivating method is in conjunction with the nursery pond of application intermittent flow dynamic formula nutrient film wherein, can realize alternation of wetting and drying and grow seedlings, reduce fertilizer consumption, can be conducive to sustainable development.
The object of the present invention is achieved like this:
A seedling-cultivating method that adopts intermittent flow dynamic formula nutrient film, is characterized in that, it specifically carries out according to following steps:
(1) seedling raising manners is selected
Optional live formula is grown seedlings or segmented is grown seedlings: while adopting live formula to grow seedlings, first seed is directly broadcast in the topsoil of grid dish that is filled with commercially available seedling medium or Nutrition Soil, then grid dish is after planting placed in the little nursery pond that is separated into several in nursery pond and cultivates seedling; While adopting segmented to grow seedlings, first be bred as rice shoot with high density cave dish, then select uniformity, healthy and strong anosis rice shoot, heel in the Nutrition Soil or matrix loading in grid dish, then cultivation is had the grid dish of rice shoot to be placed in to be separated in nursery pond in several little nursery pond and continue to cultivate seedling;
The nursery pond of the above-mentioned little nursery pond that is wherein separated into several, its structure is as described below: this nursery pond includes liquid storage tank, and bottom is equipped with the nutrition pond of plastic film; The height that this liquid storage tank is set up is therein not less than the solid wall of 20cm, is divided into settling tank and nutrition liquid pool, and sets up filter screen on solid wall top until the upper plane of above-mentioned liquid storage tank; Described nutrition liquid pool connects after water pump, and supervisor is connected with water inlet, be in charge of and realized and being communicated with of described nutrition pond more afterwards, and this water inlet supervisor and water inlet is also provided with switch valve between being in charge of by several water inlets; The bottom in described nutrition pond reduces to discharge ends gradually from water inlet, and the parting bead that this nutrition pond is wherein set up is divided into several independently little nursery ponds; After described nutrition pond is communicated with return duct by the water inlet of the return duct in the minimum little nursery pond end setting in water side, then be communicated with described settling tank; Described liquid storage tank position is lower than little nursery pond minimum in described nutrition pond;
This nursery pond specifically obtains like this:
1) first by the levelling of nutrition pond, and its base plane height is reduced gradually to discharge ends by water inlet, afterwards with high be that nutrition pond is divided into several independently little nursery ponds by the parting bead of 1.5～2.5 cm;
2) lay pond film by discharge ends to water inlet successively afterwards, pond is intermembranous to be laminated mutually, and compare Gao pond, position film is laminated on above the film of compare Di pond, position, in case leak-stopping water completely;
3) according to the structure connecting pipe of described nursery pond, grow seedlings afterwards;
(2) water and fertilizer management
During to nursery pond liquid feeding, after preparation nutrient solution, the switch valve of being responsible for and intake between being in charge of of first nursery pond being intake is opened, and starts water pump, nutrient solution is injected in first little nursery pond of water inlet; After first little nursery pond is filled, nutrient solution flows in second little nursery pond from water inlet to discharge ends direction automatically, after filling, flow into again successively in next little nursery pond, until after last little nursery pond fills, the nutrient solution of redundance is in the time that return duct is back to settling tank, little nursery ponds all in whole nutrition pond are all filled, and can switch off the pump; In management process, check in time pond liquid, supplement in time, clear up in time settling tank.
In actual production, in the time carrying out tobacco seedling, after above-mentioned steps (2), also carry out lower institute's step (3) and (4):
(3) leaf-cutting
In the time that cigarette seedling leaf occurs that mutually overlap joint shelters from heat or light, utilize automatic leaves shearing machine leaf-cutting 1～2 time, cut off cigarette seedling upper blade 1/3rd to half, to regulate the individual harmonic growth of cigarette seedling, control is large short little, improves regularity; When leaf-cutting, each little nursery pond nutrient solution is filled, grid dish is floating, and every pond cigarette seedling, in same level, is convenient to leaf-cutting even;
(4) forge seedling
Transplant first 7～10 days hardenings of cutting off the water supply, suspend supply nutrient solution, make nutrition pond dry, allow the Nutrition Soil in grid dish hole keep dry, cigarette shoot root is in of short duration exsiccosis, the amount of growth and the adaptive capacity of enhancing root system to drought environment that are to increase cigarette shoot root, shorten and plant rear lag phase.Its forge seedling degree with noon when high temperature blade only there is the slight wilting of 1～2 h, can recover normal is sooner or later degree; When wilting overlong time, to supply one time of nutrition liquid, loop forging seedling with this.
Above-mentioned water pump is arranged in above-mentioned nutrition liquid pool in the groove of one jiao of bottom, to be conducive to all to take out most nutrient solution.
The water inlet of above-mentioned return duct is arranged in the angle, pond of last little nursery pond of end of nursery pond, and higher than 2 cm at the bottom of pond, to guarantee to keep the nutrient solution of 2cm in the little nursery pond of end, and has saved the space in nutrition pond.
The delivery port of above-mentioned return duct is arranged at a jiao of above-mentioned settling tank, and in the through settling tank of outlet conduit.The nutrient solution refluxing is after outlet conduit flows into settling tank, and in the time reaching the height of filter screen, the nutrient solution of clarification passes back into nutrition liquid pool again after filtering.
Above-mentioned nutrition pond, the height of specifically being set up be consistent laterally or/and several longitudinal parting beads are divided into several little nursery ponds independently.Because the bottom in nutrition pond reduces to water side gradually from water inlet, so just can make nutrient solution also along direction from high to low, flow distribution between the little nursery pond of separating in nutrition pond, has ensured to supply equably nutrition; In addition, each little nursery pond has been realized and has been kept relatively independent, in the time that the pond film in certain little nursery pond is damaged, only needs to change the plastic film in the little nursery pond of corresponding breakage, has avoided changing whole pond and the waste that causes.
Above-mentioned water inlet is in charge of end and is set to microporous pipe; Each 2～3 m of its each little nursery pond length and width; The degree of depth of liquid storage tank is not less than 1 m.
Above-mentioned grid dish, can adopt specification to be: the grid dish of 200 porose discs, long 67cm, wide 34cm; Above-specified high density cave dish, can adopt specification to be: the grid dish of 570 porose discs, long 53cm, wide 34cm.This specification setting is only to select for above-mentioned grid dish and high density cave dish provides a kind of specification.Also can, according to the needs of actual cultivated plant, select not floatable 70,96,500 cave vinyl discs, so that cost is cheaper.
Nutrition pond, nutrition liquid pool and settling tank in this nursery pond, and the little nursery pond being separated out can, according to practical application situation, carry out corresponding adjustment to its area setting and change, so that it complements one another.
The present invention has following beneficial effect:
The present invention adopts large nursery pond pond to separate little nursery pond and grows seedlings, and is convenient to little nursery pond water detection flat, has realized stable market supply nutrition and moisture; And by the link circuit of circulating line, realize automatic irrigation, reduced labour intensity, saved production cost, avoided spraying soil compaction, the fertilizer leaching causing and growing disease.In addition, can also realize intermittent supply nutrient solution, fertilizer progressively, save fertilizer, avoid causing disease and producing weak seedling because of overfertilization; The method that adopts alternation of wetting and drying to grow seedlings has facilitated hardening, has avoided the rear transplanting seedling time of the strong transplanting of the aquatic property of root system long, fertilizer waste and the environmental pollution of also having avoided draining hardening to cause.
Brief description of the drawings
The structural representation that Fig. 1 is the nursery pond that adopts in the embodiment of the present invention 1.
The structural representation that Fig. 2 is the nursery pond that adopts in the embodiment of the present invention 2.
Embodiment
Below by embodiment, the present invention is specifically described; but following examples are only for being further detailed the present invention; can not be interpreted as the restriction to its protection domain, the person skilled in the art in this field can make some nonessential improvement and adjustment to the present invention according to foregoing.
Embodiment 1
Adopt a seedling-cultivating method for intermittent flow dynamic formula nutrient film, it specifically carries out seedling raising process according to following steps to cigarette seedling:
(1) adopt segmented to grow seedlings:
By specification be: the high density cave dish in 570 holes of long 53cm × wide 34cm × thick 3.5cm is bred as cross phase cigarette seedling, then select cigarette seedling healthy and strong, anosis, uniformity to heel in the specification that is filled with commercially available levitating seed-cultivating interstitial substance and be: in the grid dish in 200 holes of long 67cm × wide 34cm × thick 6cm, then this grid dish to be placed in to continuation cultivation seedling in the little nursery pond that is separated into several in the nursery pond of putting in order in advance;
This is wherein separated into the nursery pond of several little nursery pond, and its structure is specifically as shown in Figure of description 1, as described below: this nursery pond includes liquid storage tank, and nutrition pond 8; Its liquid storage tank is lower than the lowest part bottom surface 20cm in nutrition pond 8, and the height set up therein of this liquid storage tank solid wall 12 that is 20cm, is divided into settling tank 11 and nutrition liquid pool 1, and sets up filter screen until the upper plane of liquid storage tank on these solid wall 12 tops; After one jiao of connection water pump 2 of its nutrition liquid pool 1, be connected with water inlet supervisor 3 again, this water inlet supervisor 3 is in charge of 4 by 8 switch valves 5 with 8 water inlets and is communicated with, and its water inlet is in charge of 4 and is connected with nutrition pond 8, and intakes and be in charge of 4 parts that enter in nutrition pond 8 and be set to microporous pipe 6; The bottom in this nutrition pond 8 reduces to water side gradually from water inlet, and its two ends height differs 5cm, and the parting bead 13 that this nutrition pond 8 is the little rod work of 1.5cm by the horizontal and vertical diameter of setting up is divided into independently multiple little nursery ponds 7; Nutrition pond 8 is by the water inlet 9 higher than the return duct 10 of 1.5cm place setting at the bottom of pond in minimum little nursery pond 7 ponds of end, be communicated with return duct 10, the delivery port of this return duct 10 is arranged at the Yi Jiaochu of settling tank 11, middle and upper part in the through settling tank 11 of its outlet conduit, to avoid phegma to rush sediment; The soft plastic film of laying in the higher little nursery pond 7 in position in its nutrition pond 8 is laminated on the film in the lower little nursery pond 7 in position completely, and the total length of this soft plastic film is than the long 1m in nutrition pond 8, and the part that its two ends have more is close on Chi Geng; In this example, for saving space, its return duct 10 is to arrange through under 8 bottomlands of nutrition pond;
This nursery pond specifically obtains like this:
1) first by the levelling of nutrition pond, and its level is reduced gradually to discharge ends by water inlet, its two ends height differs 5cm, is the parting bead that the little rod of 1.5cm does afterwards nutrition pond is separated and is divided into several little nursery ponds with diameter;
2) lay pond film by discharge ends to water inlet successively afterwards, pond is intermembranous to be laminated mutually, and compare Gao pond, position film is laid compacting completely above the film of compare Di pond, position, in case leak-stopping water; On parting bead between its every two little nursery ponds, be also equipped with plastic film, nutrient solution can be crossed and not miss from cross flow above;
3) according to the structure connecting pipe of described nursery pond, grow seedlings afterwards; Wherein, long 3 m of each little Chi, width 2 m; The degree of depth of liquid storage tank is 1.5 m, and wherein the volume of nutrition liquid pool is 3～4 m
3, the volume of settling tank is 0.5 m
3; Its return duct and water inlet supervisor are all embedded in underground;
(2) water and fertilizer management
After preparation nutrient solution, first the switch valve of nursery pond is opened, then opened water pump, in first little nursery pond of water inlet in nutrient solution suction nutrition pond; After first little nursery pond is filled, in second little nursery pond of nutrient solution automatically flowing into from water inlet to discharge ends direction, after filling, flow into again successively next little nursery pond, unnecessary nutrient solution is back to settling tank through return duct, until all little nursery ponds are all filled in whole nutrition pond, can close intake pump; In management process, check in time pond liquid, supplement in time, clear up in time settling tank;
3) leaf-cutting
When occurring that cigarette seedling leaf overlaps while sheltering from heat or light mutually, utilizes leaves shearing machine to carry out leaf-cutting; When leaf-cutting, hold weight suitable, stop excessive pruning; Its leaf-cutting position should be controlled at seedling growth and put the above place of 3 cm and carry out, leaf-cutting degree taking cut off rice shoot top maximum blade 1/3rd to half for spending.When leaf-cutting, each little Chi nutrient solution is filled, seedling-cultivating tray is floating, and every pond rice shoot, in same level, is convenient to leaf-cutting even.
4) forge seedling
Transplant the first 8 days hardenings of cutting off the water supply, suspend supply nutrient solution, make nutrition pond dry, suitably reduce the moisture of the Nutrition Soil in grid dish, rice shoot root system is in of short duration exsiccosis, its forge seedling degree with noon when high temperature blade only occur sooner or later recovering the slight wilting of 1～2 h to be normally as the criterion; When wilting overlong time, to supply one time of nutrition liquid, loop forging seedling with this.Cigarette seedling after forging seedling can be used for transplanting.
Embodiment 2
Adopt a seedling-cultivating method for intermittent flow dynamic formula nutrient film, it specifically carries out seedling raising process according to following steps to cigarette seedling:
(1) adopt segmented to grow seedlings:
By specification be: the high density cave dish in 570 holes of long 53cm × wide 34cm × thick 3.5cm is bred as cross phase cigarette seedling, then select healthy and strong, anosis, it is loam that the cigarette seedling of uniformity is heeled in being filled with according to weight ratio: fine sand: the specification of the seedling nutritious soil of the organic proportional arrangement for 6:3:1 is: (hardboard of first liner before this grid dish filling Nutrition Soil in the grid dish in 96 holes of long 58.5cm × wide 32.5cm × thick 4.5cm, band will be extracted this hardboard out to recycle after putting), then this grid dish is placed in and in the little nursery pond that is separated into several in the nursery pond of putting in order in advance, continues to cultivate seedling,
This is wherein separated into the nursery pond of several little nursery pond, and its structure is specifically as shown in Figure of description 2, as described below: this nursery pond includes liquid storage tank, and is divided into the nutrition pond 8 of multiple independent sectors by wherein longitudinal solid wall; Its liquid storage tank is lower than the lowest part bottom surface 20cm in nutrition pond 8, and the solid wall 12 that the height that this liquid storage tank is set up is therein 20cm, is divided into settling tank 11 and nutrition liquid pool 1, and sets up filter screen until the upper plane of liquid storage tank on solid wall 12 tops; One jiao in its nutrition liquid pool 1 is provided with groove, in this groove, settle water pump 2, this water pump 2 is connected with water inlet supervisor 3, this water inlet supervisor 3 is in charge of 4 by switch valve 5 and multiple water inlets respectively and is communicated with (in figure, being only shown as 8), its water inlet is in charge of 4 and is connected with nutrition pond 8, and water inlet is in charge of 4 parts that enter in nutrition pond 8 and is set to microporous pipe 6; The bottom in this nutrition pond 8 reduces to water side gradually from water inlet, its two ends height differs 5cm, and the parting bead 13 done of the little rod of selecting diameter to be 1.5cm laterally set up of this nutrition pond 8 be divided into independently in several little nursery pond 7(figure, be only shown as 5); Nutrition pond 8 is by the water inlet 9 higher than the return duct 10 of 2cm place setting at the bottom of pond in minimum little nursery pond 7 ponds of end, be communicated with return duct 10, the delivery port of this return duct 10 is arranged at the Yi Jiaochu of settling tank 11, middle and upper part in the through settling tank 11 of its outlet conduit, to avoid phegma to rush sediment; The soft plastic film of laying in the higher little nursery pond 7 in position in its nutrition pond 8 is laminated on the film in the lower little nursery pond 7 in position completely, and the total length of this soft plastic film is than the long 1m in nutrition pond 8, and the part that its two ends have more is close on Chi Geng; In this example, for saving space, its return duct 10 is to arrange through under 8 bottomlands of nutrition pond;
This nursery pond specifically obtains like this:
1) first by the levelling of nutrition pond, and its level is reduced gradually to discharge ends by water inlet, its two ends height differs 5cm, is the parting bead that the little rod of 1.5cm does afterwards nutrition pond is separated and is divided into several little nursery ponds with diameter;
2) lay pond film by discharge ends to water inlet successively afterwards, pond is intermembranous to be laminated mutually, and compare Gao pond, position film is laid compacting completely above the film of compare Di pond, position, in case leak-stopping water; On parting bead between its every two little nursery ponds, be also equipped with plastic film, nutrient solution can be crossed and not miss from cross flow above;
3) according to the structure connecting pipe of described nursery pond, grow seedlings afterwards; Wherein, long 3 m of each little Chi, width 2 m; The degree of depth of liquid storage tank is 1.5 m, and wherein the volume of nutrition liquid pool is 3～4 m
3, the volume of settling tank is 0.5 m
3; Its return duct and water inlet supervisor are all embedded in underground;
(2) water and fertilizer management
After preparation nutrient solution, first the switch valve of nursery pond is opened, then opened water pump, in first little nursery pond of water inlet in nutrient solution suction nutrition pond; After first little nursery pond is filled, in second little nursery pond of nutrient solution automatically flowing into from water inlet to discharge ends direction, after filling, flow into again successively next little nursery pond, unnecessary nutrient solution is back to settling tank through return duct, until all little nursery ponds are all filled in whole nutrition pond, can close intake pump; In management process, check in time pond liquid, supplement in time, clear up in time settling tank;
3) leaf-cutting
When occurring that cigarette seedling leaf overlaps while sheltering from heat or light mutually, utilizes leaves shearing machine to carry out leaf-cutting; When leaf-cutting, hold weight suitable, stop excessive pruning; Its leaf-cutting position should be controlled at seedling growth and put the above place of 3 cm and carry out, leaf-cutting degree taking cut off rice shoot top maximum blade 1/3rd to half for spending.When leaf-cutting, each little Chi nutrient solution is filled, seedling-cultivating tray is floating, and every pond rice shoot, in same level, is convenient to leaf-cutting even.
4) forge seedling
Transplant the first 10 days hardenings of cutting off the water supply, suspend supply nutrient solution, make nutrition pond dry, suitably reduce the moisture of the Nutrition Soil in grid dish, rice shoot root system is in of short duration exsiccosis, its forge seedling degree with noon when high temperature blade only occur sooner or later recovering the slight wilting of 1～2 h to be normally as the criterion; When wilting overlong time, supply one time of nutrition liquid.Cigarette seedling after forging seedling can be used for transplanting.
Claims (9)
1. a seedling-cultivating method that adopts intermittent flow dynamic formula nutrient film, is characterized in that, it specifically carries out according to following steps:
(1) seedling raising manners is selected
Optional live formula is grown seedlings or segmented is grown seedlings: while adopting live formula to grow seedlings, first seed is directly broadcast in the topsoil of grid dish that is filled with commercially available seedling medium or Nutrition Soil, then grid dish is after planting placed in the little nursery pond that is separated into several in nursery pond and cultivates seedling; While adopting segmented to grow seedlings, first be bred as rice shoot with high density cave dish, then select uniformity, healthy and strong anosis rice shoot, heel in the Nutrition Soil or matrix loading in grid dish, then cultivation is had the grid dish of rice shoot to be placed in to be separated in nursery pond in several little nursery pond and continue to cultivate seedling;
The nursery pond of the described little nursery pond that is wherein separated into several, its structure is as described below: this nursery pond includes liquid storage tank, and bottom is equipped with the nutrition pond of plastic film; The height that this liquid storage tank is set up is therein not less than the solid wall of 20cm, is divided into settling tank and nutrition liquid pool, and sets up filter screen on solid wall top until the upper plane of described liquid storage tank; Described nutrition liquid pool connects after water pump, and supervisor is connected with water inlet, be in charge of and realized and being communicated with of described nutrition pond more afterwards, and this water inlet supervisor and water inlet is also provided with switch valve between being in charge of by several water inlets; The bottom in described nutrition pond reduces to discharge ends gradually from water inlet, and the parting bead that this nutrition pond is wherein set up is divided into several independently little nursery ponds; After described nutrition pond is communicated with return duct by the water inlet of the return duct in the minimum little nursery pond end setting in water side, then be communicated with described settling tank; Described liquid storage tank position is lower than little nursery pond minimum in described nutrition pond;
This nursery pond specifically obtains like this:
1) first by the levelling of nutrition pond, and its base plane height is reduced gradually to discharge ends by water inlet, afterwards with high be that nutrition pond is divided into several independently little nursery ponds by the parting bead of 1.5～2.5 cm;
2) lay pond film by discharge ends to water inlet successively afterwards, pond is intermembranous to be laminated mutually, and compare Gao pond, position film is laminated on above the film of compare Di pond, position, in case leak-stopping water completely;
3) according to the structure connecting pipe of described nursery pond, grow seedlings afterwards;
(2) water and fertilizer management
During to nursery pond liquid feeding, after preparation nutrient solution, the switch valve of being responsible for and intake between being in charge of of first nursery pond being intake is opened, and starts water pump, nutrient solution is injected in first little nursery pond of water inlet; After first little nursery pond is filled, nutrient solution flows in second little nursery pond from water inlet to discharge ends direction automatically, after filling, flow into again successively in next little nursery pond, until after last little nursery pond fills, the nutrient solution of redundance is in the time that return duct is back to settling tank, little nursery ponds all in whole nutrition pond are all filled, and switch off the pump; In management process, check in time pond liquid, supplement in time, clear up in time settling tank.
2. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 1, is characterized in that, in the time carrying out tobacco seedling, also carries out following steps after described step (2):
(3) leaf-cutting
In the time that cigarette seedling leaf occurs that mutually overlap joint shelters from heat or light, utilize automatic leaves shearing machine leaf-cutting 1～2 time, cut off cigarette seedling upper blade 1/3rd to half; And when leaf-cutting, each little nursery pond nutrient solution is filled, grid dish is floating, every pond cigarette seedling is in same level;
(4) forge seedling
Transplant first 7～10 days hardenings of cutting off the water supply, suspend supply nutrient solution, make nutrition pond dry, allow Nutrition Soil or seedling medium in grid dish hole keep dry, cigarette shoot root is in of short duration exsiccosis, its forge seedling degree with noon when high temperature blade only there is the wilting of 1～2 h, can recover normal is sooner or later degree; When wilting overlong time, to supply one time of nutrition liquid, loop forging seedling with this.
3. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 1 and 2, is characterized in that: described water pump is arranged in described nutrition liquid pool in the groove of one jiao of bottom; The water inlet of described return duct is arranged in the angle, pond of last little nursery pond of end of nursery pond, and higher than 2 cm at the bottom of pond.
4. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 1 and 2, is characterized in that: the delivery port of described return duct is arranged at a jiao of described settling tank, and in the through settling tank of outlet conduit; Described water inlet is in charge of end and is set to microporous pipe; Each 2～3 m of its each little nursery pond length and width; The degree of depth of liquid storage tank is not less than 1 m.
5. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 3, is characterized in that: the delivery port of described return duct is arranged at a jiao of described settling tank, and in the through settling tank of outlet conduit; Described water inlet is in charge of end and is set to microporous pipe; Each 2～3 m of its each little nursery pond length and width; The degree of depth of liquid storage tank is not less than 1 m.
6. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 1 and 2, it is characterized in that: described nutrition pond, the height of specifically being set up be consistent laterally or/and several longitudinal parting beads are divided into several little nursery ponds independently.
7. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 3, it is characterized in that: described nutrition pond, the height of specifically being set up be consistent laterally or/and several longitudinal parting beads are divided into several little nursery ponds independently.
8. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 4, it is characterized in that: described nutrition pond, the height of specifically being set up be consistent laterally or/and several longitudinal parting beads are divided into several little nursery ponds independently.
9. the seedling-cultivating method of employing intermittent flow dynamic formula nutrient film according to claim 5, it is characterized in that: described nutrition pond, the height of specifically being set up be consistent laterally or/and several longitudinal parting beads are divided into several little nursery ponds independently.
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| CN104957017A (en) * | 2015-07-15 | 2015-10-07 | 广州市恒盛园林科技有限公司 | Seedling method for bare-rooted soilless seedling of aquatic plant withe underleaf pearl |
| CN105493851B (en) * | 2015-12-16 | 2019-10-01 | 湖南省西瓜甜瓜研究所 | A kind of bletilla striata seedling acclimation method |
| CN106613491A (en) * | 2017-03-01 | 2017-05-10 | 贵州省烟草公司遵义市公司遵义县分公司 | Three-dimensional tobacco seedling raising device |
| CN108235934B (en) * | 2018-04-20 | 2020-04-21 | 云南中烟工业有限责任公司 | Method for changing external growth conditions of tobacco and promoting early flowering of tobacco |
| CN108541573B (en) * | 2018-04-20 | 2020-03-06 | 云南中烟工业有限责任公司 | Method for obtaining short-period tobacco by promoting early flowering of tobacco |
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| GB2077082A (en) * | 1980-05-27 | 1981-12-16 | Morris John Malcolm | Method and apparatus for growing crops |
| CN101642050B (en) * | 2009-08-21 | 2012-02-01 | 广州甘蔗糖业研究所 | Method for enhancing survival rate of grafting sugarcane group seedling |
| US20110067301A1 (en) * | 2009-09-21 | 2011-03-24 | Demitchell Mark | Vertical Hydroponics System |
| JP5435430B2 (en) * | 2010-10-08 | 2014-03-05 | 公章 谷村 | Plant cultivation equipment |
| CN102146209B (en) * | 2011-01-13 | 2012-08-08 | 中国农业科学院农业资源与农业区划研究所 | Environment-friendly multi-functional agricultural soil surface nutrient film and preparation method thereof |
| GB2489710B (en) * | 2011-04-05 | 2016-02-24 | Hydrogarden Wholesale Supplies Ltd | Nutrient film technique system |
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