CN104926430A - Nutrient solution for hydroponic lettuce and preparation method and application of nutrient solution - Google Patents
Nutrient solution for hydroponic lettuce and preparation method and application of nutrient solution Download PDFInfo
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Abstract
The invention relates to nutrient solution for hydroponic lettuce. The nutrient solution comprises the following components in concentrations as follows: 115 to 120mg/L of calcium nitrate, 74 to 78mg/L of potassium nitrate, 120 to 125mg/L of magnesium sulfate, 63 to 67mg/L of potassium sulphate, 18 to 22mg/L of chelated iron, 0.4 to 0.6mg/L of boric acid, 0.4 to 0.6mg/L of manganese sulfate, 0.045 to 0.055mg/L of zinc sulfate, 0.015 to 0.025mg/L of copper sulfate, 0.008 to 0.012mg/L of ammonium molybdate and a pH value regulator; the pH value of the nutrient solution is 5.5 to 6.5, and the pH value regulator consists of dilute nitric acid and dilute phosphoric acid. According to the nutrient solution provided by the invention, the proportion of all the elements is balanced; meanwhile, by comprehensively considering the composition of the nutrient solution and pH regulation, while the production cost is reduced, the yield of the lettuce and the utilization efficiency of the nutrient solution are improved.
Description
Technical field
The present invention relates to industrialized agriculture cultivation technique without soil field, particularly relate to a kind of water planting romaine lettuce nutritive medium and preparation and application method thereof.
Background technology
Water planting, using nutritive medium as cultivation medium, has clean, that cheapness is convenient to regulation and control feature, becomes one of cultivation mode of greenhouse vegetables first-selection.But due under nutrient fluid cultivation condition, the root system of crop is directly immersed in nutritive medium, because the resiliency of nutritive medium is weaker than soil far away, the fluctuation of its component, characteristic can produce detrimentally affect to the health of crop at short notice.Although above-mentioned impact can be avoided by changing nutritive medium, changing nutritive medium and can cause very large waste to water resources, and the nitrogen of residual inorganic states in nutritive medium waste liquid, phosphorus are discharged in environment and also can cause potential threat to the water surrounding of locality.
Therefore; at the enclosed planting type of the many employings of factory culture system of mass-producing; namely by realizing nutritive medium closed cycle in cultivation system by certain pipe installation, and the stable of nutritive medium proterties is maintained by the regulation and control of component, to create the planting environment be suitable for for crop.Multiplex EC and the pH two indices of nutrient solution prescription is weighed.Under normal circumstances, EC management and control and pH management and control are often separately considered by production manager, namely adopt general cultivation formulated nutritive medium, nutritive medium EC is adjusted to zone of reasonableness, then use pH adjusting agent to regulate the pH of nutritive medium.But for most crop, crop root is comparatively large to the absorbed dose of nitrogen, phosphorus, potassium in nutritive medium, and the demand of calcium, magnesium, sulphur is less.The lack of balance absorption of crop root to each leading ion of nutritive medium can cause nutrient solution prescription to occur balance phenomenon, and the pH value of nutritive medium also can raise, and needs to be adjusted in suitable scope by adding pH adjusting agent, and the pH adjusting agent of adding mostly is nitric acid.While improving nutritive medium acid or alkali environment, also in nutritive medium, a large amount of nitrate radicals has been brought into by nutritive medium pH regulation and control, in nutritive medium, excess nitric acid root can cause nutrient solution prescription unbalance, cause antagonism of ions, make the quality of vegetable deterioration problem such as nitrate enrichment in object, the reduction of VC content.
In view of this, be urgently optimized design for existing water planting crops process Middle nutrition liquid formula, set up high-quality and efficient vegetable soilless culture production model on this basis.
Summary of the invention
The present invention is directed to the problem that nutrient solution prescription that the compounding that runs in batch production romaine lettuce cultivation and pH regulate and control independently to carry out bringing is unbalance, existing formula is improved, the basis ensureing crop nutrition content demand is optimized the fertilizer type of nutrient solution prescription, introduce potassium sulfate, phosphoric acid, nitric acid, eliminate phosphoric acid salt, decrease the consumption of nitrocalcite and saltpetre, while guarantee nutritive medium pH is stable, takes into account the balance of nutrition liquid nitrogen, phosphorus, potassium, improves the yield and quality of romaine lettuce.
The first object of the present invention is a kind of water planting romaine lettuce nutritive medium of protection.
Romaine lettuce of the present invention is also known as Leaf lettuce, the young dish of goose, the young dish of mark, the young dish of lettuce, and belong to composite family Lactuca, Latin is called var.ramosa Hort..
The present invention is directed to the characteristic of romaine lettuce, all reasonably optimizing has been carried out to the composition of nutritive medium and the consumption of each composition, the pH value of nutritive medium has been limited simultaneously, each component synergy, thus improve effect of nutritive medium.
Specifically, the invention provides a kind of water planting romaine lettuce nutritive medium, described nutritive medium comprises the composition of following concentration: nitrocalcite 115 ~ 120mg/L, saltpetre 74 ~ 78mg/L, magnesium sulfate 120 ~ 125mg/L, potassium sulfate 63 ~ 67mg/L, chelated iron 18 ~ 22mg/L, boric acid 0.4 ~ 0.6mg/L, manganous sulfate 0.4 ~ 0.6mg/L, zinc sulfate 0.045 ~ 0.055mg/L, copper sulfate 0.015 ~ 0.025mg/L, ammonium molybdate 0.008 ~ 0.012mg/L, pH adjusting agent.
Described chelated iron is preferably iron edta sodium salt EDTA-FeNa.
The pH value of described nutritive medium is 5.5 ~ 6.5.
Described pH adjusting agent by 3 ~ 7% dust technology and 3 ~ 7% dilute phosphoric acids by volume 1.5 ~ 2.5:1 mixed preparing form, be preferably by 4 ~ 6% dust technology and 4 ~ 6% dilute phosphoric acids by volume 2:1 mixed preparing form.
As a preferred embodiment of the present invention, described nutritive medium is formulated by the composition of following concentration: nitrocalcite 118mg/L, saltpetre 76mg/L, magnesium sulfate 123mg/L, potassium sulfate 65mg/L, chelated iron 20mg/L, boric acid 0.5mg/L, manganous sulfate 0.5mg/L, zinc sulfate 0.05mg/L, copper sulfate 0.02mg/L, ammonium molybdate 0.01mg/L and pH value regulator;
The pH value of described nutritive medium is 5.5 ~ 6.5, described pH value regulator by 4 ~ 6% dust technology and 4 ~ 6% dilute phosphoric acids by volume 2:1 mix.
PH adjusting agent of the present invention more preferably by 5% dust technology and 5% dilute phosphoric acid by volume 2:1 mixed preparing form, the pH adjusting agent of this formula is best for the pH value regulating effect of water planting romaine lettuce nutritive medium provided by the invention.
The second object of the present invention protects the compound method of described water planting romaine lettuce nutritive medium.The preparation of nutritive medium stoste and pH regulation and control are considered as a whole by the method, thus improve effect of water planting romaine lettuce nutritive medium.
Specifically, the invention provides a kind of compound method of water planting romaine lettuce nutritive medium, said method comprising the steps of:
(1) taking each composition, take water as solvent, prepares mother liquor A, mother liquor B and mother solution C respectively;
Wherein, mother liquor A comprises nitrocalcite and saltpetre; Mother liquor B comprises magnesium sulfate and potassium sulfate; Mother solution C comprises chelated iron, boric acid, manganous sulfate, zinc sulfate, copper sulfate and ammonium molybdate; The concentration of each composition is 400 ~ 600 times of aimed concn;
(2) to water filling in nutritive medium liquid storage tank, add step (1) mother liquid obtained A, mother liquor B and mother solution C while stirring successively, make each composition reach aimed concn, after mixing, obtain nutritive medium stoste;
(3) use pH adjusting agent of the present invention that the pH value of step (2) gained nutritive medium stoste is adjusted to 5.5 ~ 6.5, obtain water planting lettuce planting liquid.
In described step (1), the preparation of each mother liquor can be carried out in indoor.
In described step (2), the preparation of nutritive medium stoste can be carried out in the nutritive medium liquid storage tank of cultivation system.After adding each mother liquor, all fully to stirring, to ensure that mother liquor and water mix, in case precipitate because localized ion concentration is too high when adding lower a kind of mother liquor, the validity of nutritive medium being reduced.Described water can use tap water.
In described step (3), because the pH generally preparing nutritive medium water used is many higher than 6.5, even there will be the situation higher than 7.5, therefore, in step (3), the pH of reply step (2) gained nutritive medium stoste detects, and adopts pH adjusting agent of the present invention that the pH of nutritive medium is adjusted to 5.5 ~ 6.5.
The third object of the present invention protects the application of described water planting romaine lettuce nutritive medium.The method fully can avoid each component unbalance that may occur in nutritive medium use procedure, ensure that the result of use of nutritive medium.
Specifically, the invention provides a kind of application method of water planting romaine lettuce nutritive medium, said method comprising the steps of:
(1) romaine lettuce is colonizated in the liquid storage tank that described water planting romaine lettuce nutritive medium is housed, and nutrient turnover liquid;
(2) pH value of periodic detection nutritive medium, when detected result higher than 6.5 time, use pH adjusting agent of the present invention that pH value is adjusted to 5.5 ~ 6.5.
In described step (1), Growth of Lettuce process Middle nutrition liquid can continue consume, when the nutritive medium in liquid storage tank is consumed to 1/2 of original volume, can Additional nutrient solution to original volume.
In described step (2), due to the lack of balance sorption of crop root in Growth of Lettuce process, nutritive medium pH can be caused to raise, therefore need to carry out periodic detection to the pH of nutritive medium, when detected result higher than 6.5 time, just need to carry out nutritive medium pH regulation and control by pH adjusting agent of the present invention, be adjusted in the scope of 5.5 ~ 6.5.Nutritive medium pH management process also can realize the intelligent management of unattended by nutrient solution prescription on-line checkingi regulation device.
Preferably, described application method comprises the following steps:
(1) the romaine lettuce Seeding planting launched by two panels true leaf is in the cultivation bed that described water planting romaine lettuce nutritive medium is housed, and provide nutritive medium with water circulating pump, water pump open frequency is 15 minutes/hour;
(2) pH value of periodic detection nutritive medium, when detected result higher than 6.5 time, use by 5% dust technology and the 5% dilute phosphoric acid pH adjusting agent that mixes of 2:1 by volume, pH value be adjusted to 5.5, gather in the crops to romaine lettuce.
Technique scheme tool of the present invention has the following advantages: first, the preparation of nutritive medium and pH regulate and control to consider by the present invention, suitably decrease the consumption of nitric nitrogen in nutritive medium, avoid the excessive introducing to nitrate radical in compounding and pH regulation process, the input of nitrogenous fertilizer is decreased while maintaining nutrient solution prescription balance, while reduction production cost, improve the output of romaine lettuce, quality and nutritive medium utilising efficiency.Test-results characterizes, and compared with regulating and controlling nutritive medium pH value, utilize the present invention to carry out the regulation and control of nutritive medium pH value and the output of vegetables can be made to increase by more than 20%, and nutritive medium utilising efficiency improves more than 10% with the single nitric acid of use.The present invention's phosphoric acid carrys out the phosphoric acid salt (primary ammonium phosphate or potassium primary phosphate) in alternative conventional nutrient liquid formula, utilize the stable resiliency of phosphoric acid that nutritive medium pH can be made to be stabilized within the longer time in rational scope on the one hand, the nitric acid of phosphoric acid Substitute For Partial is used on the other hand under the prerequisite ensureing romaine lettuce phosphorus demand, thus decrease the input of nitric acid, avoiding nitrate doing the accumulation in object, also ensure that the phosphorus demand of crop simultaneously.The present invention is optimized the fertilizer type of nutrient solution prescription on the basis ensureing crop nutrition content demand, introduce potassium sulfate, phosphoric acid, nitric acid, eliminate primary ammonium phosphate, decrease the consumption of nitrocalcite and saltpetre, while guarantee nutritive medium pH is stable, takes into account the balance of nutrition liquid nitrogen, phosphorus, potassium, improves the yield and quality of romaine lettuce.
In sum, compared with prior art, the present invention considers as a whole balanced for nutrient solution prescription with proterties is stable, has taken into account the balance of nutrition liquid nitrogen, phosphorus, potassium, for crop creates more suitable rhizospheric environment while maintenance nutritive medium pH value is stable.Further, while reduction production cost, improve output and the nutritive medium utilising efficiency of romaine lettuce.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of nutrient fluid cultivation system described in embodiment 7; In figure, 1 cultivation system nutritive medium liquid storage tank, 2 feed flow water pumps, 3 cultivation beds.
Fig. 2 is the schematic diagram of nutritive medium automated management system described in embodiment 8; In figure, 1 cultivation system nutritive medium liquid storage tank, 2 feed flow water pumps, 3 cultivation beds, 4 pairs of float(ing)valves, 5 nutritive medium pH automated management systems, 6 nutritive medium stostes deposit tank.
Fig. 3 is romaine lettuce yield result contrast schematic diagram described in embodiment 7.
Fig. 4 is nutritive medium pH dynamic change contrast schematic diagram described in embodiment 7.
Embodiment
Below in conjunction with drawings and Examples, the specific embodiment of the present invention is described in further detail.Following examples for illustration of the present invention, but are not used for limiting the scope of the invention.
Compared with traditional water planting romaine lettuce nutrient solution prescription and using method, present embodiments provide for a kind of water planting romaine lettuce nutrient solution prescription and compound method, EC regulation and control and pH in compounding process regulate and control to consider as a whole by this formula and compound method, avoid and the two are independently carried out in compounding process and the generation of nutrient solution prescription balance phenomenon that causes.Thus, effectively control the ratio of nitrogen in nutrient solution prescription, phosphorus and potassium, in preparation nutrient solution prescription process, take into account the regulation and control of nutritive medium nutrients ratio and pH two important factors simultaneously.Here, be no matter the ratio of nitric acid and phosphoric acid in the concentration of principal element in nutrient solution prescription or pH adjusting agent, all can make fine setting, as long as the above-mentioned core design design of application the present invention is all in the scope that the application's request is protected.
Without loss of generality, below with conventional closed type nutrient fluid cultivation system for technical foundation, the water planting romaine lettuce nutrient solution prescription propose the present invention and configuration using method elaborate.
Chelated iron described in various embodiments of the present invention is iron edta sodium salt EDTA-FeNa.
Embodiment 1
Water planting romaine lettuce nutritive medium is grouped into by the one-tenth of following concentration: nitrocalcite 118mg/L, saltpetre 76mg/L, magnesium sulfate 123mg/L, potassium sulfate 65mg/L, chelated iron 20mg/L, boric acid 0.5mg/L, manganous sulfate 0.5mg/L, zinc sulfate 0.05mg/L, copper sulfate 0.02mg/L, ammonium molybdate 0.01mg/L and pH value regulator;
The pH value of described nutritive medium is 5.5, described pH value regulator by 5% dust technology and 5% dilute phosphoric acid by volume 2:1 mix.
Embodiment 2
Compared with embodiment 1, difference is only, the pH value of described nutritive medium is 6.0, described pH value regulator by 4% dust technology and 6% dilute phosphoric acid by volume 2:1 mix.
Embodiment 3
Compared with embodiment 1, difference is only, the pH value of described nutritive medium is 6.5, described pH value regulator by 6% dust technology and 4% dilute phosphoric acid by volume 2:1 mix.
Embodiment 4
Water planting romaine lettuce nutritive medium is grouped into by the one-tenth of following concentration: nitrocalcite 115mg/L, saltpetre 74mg/L, magnesium sulfate 120mg/L, potassium sulfate 63mg/L, chelated iron 18mg/L, boric acid 0.4mg/L, manganous sulfate 0.4mg/L, zinc sulfate 0.045mg/L, copper sulfate 0.015mg/L, ammonium molybdate 0.008mg/L and pH value regulator;
The pH value of described nutritive medium is 6.0, described pH value regulator by 3% dust technology and 7% dilute phosphoric acid by volume 1.5:1 mix.
Embodiment 5
Water planting romaine lettuce nutritive medium is grouped into by the one-tenth of following concentration: nitrocalcite 120mg/L, saltpetre 78mg/L, magnesium sulfate 125mg/L, potassium sulfate 67mg/L, chelated iron 22mg/L, boric acid 0.6mg/L, manganous sulfate 0.6mg/L, zinc sulfate 0.055mg/L, copper sulfate 0.025mg/L, ammonium molybdate 0.012mg/L and pH value regulator;
The pH value of described nutritive medium is 6.5, described pH value regulator by 7% dust technology and 3% dilute phosphoric acid by volume 2.5:1 mix.
Embodiment 6
Water planting lettuce planting liquid according to following steps preparation embodiment 1 provides:
(1) taking each composition, take water as solvent, prepares mother liquor A, mother liquor B and mother solution C respectively; Wherein:
Mother liquor A consists of: nitrocalcite 59g/L, saltpetre 38g/L;
Mother liquor B consists of: magnesium sulfate 61.5g/L, potassium sulfate 32.5g/L;
Consisting of of mother solution C: chelated iron: 20g/L, boric acid 1.43g/L, manganous sulfate 1.065g/L, zinc sulfate 0.11g/L, copper sulfate 0.04g/L, ammonium molybdate 0.01g/L;
(2) in nutritive medium liquid storage tank, inject 80L tap water, add the mother liquid obtained A 160ml of step (1), mother liquor B 160ml and mother solution C 160ml while stirring successively, after mixing, obtain nutritive medium stoste;
(3) use by 5% dust technology and the 5% dilute phosphoric acid pH adjusting agent that mixes of 2:1 by volume, the pH value of step (2) gained nutritive medium stoste is adjusted to 5.5, obtains water planting lettuce planting liquid.
Embodiment 7
Precision agriculture Demonstration Base greenhouse experiments district of man of little Tang mountain country cultivation romaine lettuce (kind is raw No. 2 of large picture); The composition of water planting romaine lettuce nutritive medium is with embodiment 1; The compound method of nutritive medium is with embodiment 6; Culture apparatus as shown in Figure 1; According to following steps cultivation romaine lettuce:
(1) the romaine lettuce Seeding planting launched by two panels true leaf is in the liquid storage tank that described water planting romaine lettuce nutritive medium is housed, and provide nutritive medium with water circulating pump, water pump open frequency is 15 minutes/hour;
(2) pH value of periodic detection nutritive medium, when detected result higher than 6.5 time, use by 5% dust technology and the 5% dilute phosphoric acid pH adjusting agent that mixes of 2:1 by volume, pH value be adjusted to 5.5, gather in the crops to romaine lettuce.
The present embodiment arranges control group simultaneously.
The difference of control group and the present embodiment is only, nutritive medium is made up of conventional formulation, and described conventional formulation is specially: nitrocalcite 472mg/L, saltpetre 303.5mg/L, magnesium sulfate 246.5mg/L, primary ammonium phosphate 57.5mg/L, chelated iron 20mg/L, boric acid 0.5mg/L, manganous sulfate 0.5mg/L, zinc sulfate 0.05mg/L, copper sulfate 0.02mg/L, ammonium molybdate 0.01mg/L.With regard to this nutrient solution prescription nutrient composition, can meet plant growth needs, owing to taking from underground water or well water at the water of commercialization cultivation preparation nutritive medium, the pH of preparation nutritive medium stoste is all higher than 6.5 more, even reach about 7.5, therefore by nitric acid, the pH value of nutritive medium is adjusted to 5.5.
After romaine lettuce results, measure its output, result as shown in Figure 3.Romaine lettuce determination of yield result shows, for individual plant romaine lettuce, the output of the present embodiment (newly researching and developing formula) is 130g, than the output increased 24.5% of control group (conventional formulation).
According to the cultivating method that the present embodiment provides, the nutrient fluid cultivation romaine lettuce adopting each embodiment to provide respectively also contrasts single plant yield.After testing, the single plant yield that embodiment 1 cultivates gained romaine lettuce is the highest, and embodiment 2,3 is secondly, embodiment 4,5 minimum; Meanwhile, the output of nutrient fluid cultivation gained romaine lettuce that each embodiment provides all is significantly higher than control group.
, dynamically analyze the pH of romaine lettuce in breeding time, the result of the present embodiment (newly researching and developing formula) compared with control group (conventional formulation) as shown in Figure 4 meanwhile.The scheme of the present embodiment is compared with control group, improve the stability of nutritive medium pH value, decrease the adjustment number of times of nutritive medium pH and the consumption of conditioning agent, thus decrease the input amount of nitric acid, substantially increase the utilization rate of nitrogen fertilizer of nutritive medium, utilize simultaneously and the arrangement achieves nutritive medium pH value auto-control, saved cost of labor.
Embodiment 8
The present embodiment proposes this nutrient solution prescription and modulator approach to combine with pH intelligent controlling device to carry out the application case of nutrient solution prescription intelligent management.
Fig. 2 shows the schematic diagram of the nutritive medium pH automated management system of the present embodiment.Compared with embodiment 7, the present embodiment installs two float(ing)valve in liquid storage tank, pumps into nutritive medium stoste when liquid storage tank Middle nutrition liquid liquid level is down to predeterminated position A2 in nutritive medium, closes solution feed pump when liquid storage tank Middle nutrition liquid liquid level arrives predeterminated position A1.
All the other operations are with embodiment 7.
Above embodiment only in order to technical scheme of the present invention to be described, is not intended to limit; Although with reference to previous embodiment to invention has been detailed description, those of ordinary skill in the art is to be understood that: it still can be modified to the technical scheme described in foregoing embodiments, or carries out equivalent replacement to wherein portion of techniques feature; And these amendments or replacement, do not make the essence of appropriate technical solution depart from the spirit and scope of various embodiments of the present invention technical scheme.
Claims (10)
1. a water planting romaine lettuce nutritive medium, is characterized in that, described nutritive medium comprises the composition of following concentration: nitrocalcite 115 ~ 120mg/L, saltpetre 74 ~ 78mg/L, magnesium sulfate 120 ~ 125mg/L, potassium sulfate 63 ~ 67mg/L, chelated iron 18 ~ 22mg/L, boric acid 0.4 ~ 0.6mg/L, manganous sulfate 0.4 ~ 0.6mg/L, zinc sulfate 0.045 ~ 0.055mg/L, copper sulfate 0.015 ~ 0.025mg/L, ammonium molybdate 0.008 ~ 0.012mg/L, pH value regulator;
The pH value of described nutritive medium is 5.5 ~ 6.5, and described pH value regulator is made up of dust technology and dilute phosphoric acid.
2. water planting romaine lettuce nutritive medium according to claim 1, is characterized in that, described pH value regulator by 3 ~ 7% dust technology and 3 ~ 7% dilute phosphoric acids by volume 1.5 ~ 2.5:1 mix.
3. water planting romaine lettuce nutritive medium according to claim 2, is characterized in that, described pH value regulator by 4 ~ 6% dust technology and 4 ~ 6% dilute phosphoric acids by volume 2:1 mix.
4. water planting romaine lettuce nutritive medium according to claim 1, it is characterized in that, described nutritive medium is grouped into by the one-tenth of following concentration: nitrocalcite 118mg/L, saltpetre 76mg/L, magnesium sulfate 123mg/L, potassium sulfate 65mg/L, chelated iron 20mg/L, boric acid 0.5mg/L, manganous sulfate 0.5mg/L, zinc sulfate 0.05mg/L, copper sulfate 0.02mg/L, ammonium molybdate 0.01mg/L, pH value regulator;
The pH value of described nutritive medium is 5.5 ~ 6.5, described pH value regulator by 4 ~ 6% dust technology and 4 ~ 6% dilute phosphoric acids by volume 2:1 mix.
5. water planting romaine lettuce nutritive medium according to claim 1, it is characterized in that, described nutritive medium is grouped into by the one-tenth of following concentration: nitrocalcite 118mg/L, saltpetre 76mg/L, magnesium sulfate 123mg/L, potassium sulfate 65mg/L, Sytron 20mg/L, boric acid 0.5mg/L, manganous sulfate 0.5mg/L, zinc sulfate 0.05mg/L, copper sulfate 0.02mg/L, ammonium molybdate 0.01mg/L, pH value regulator;
The pH value of described nutritive medium is 5.5 ~ 6.5; Described pH value regulator by 5% dust technology and 5% dilute phosphoric acid by volume 2:1 mix.
6. the compound method of water planting romaine lettuce nutritive medium described in Claims 1 to 5 any one, is characterized in that, said method comprising the steps of:
(1) taking each composition, take water as solvent, prepares mother liquor A, mother liquor B and mother solution C respectively; Wherein, mother liquor A comprises nitrocalcite and saltpetre; Mother liquor B comprises magnesium sulfate and potassium sulfate; Mother solution C comprises chelated iron, boric acid, manganous sulfate, zinc sulfate, copper sulfate and ammonium molybdate; In mother liquor, the concentration of each composition is 400 ~ 600 times of final concentration;
(2) to water filling in nutritive medium liquid storage tank, add step (1) mother liquid obtained A, mother liquor B and mother solution C while stirring successively, make each composition reach final concentration, after mixing, obtain nutritive medium stoste;
(3) use pH adjusting agent that the pH value of step (2) gained nutritive medium stoste is adjusted to 5.5 ~ 6.5, obtain water planting lettuce planting liquid.
7. the application of the water planting romaine lettuce nutritive medium that method is formulated described in the water planting romaine lettuce nutritive medium described in Claims 1 to 5 any one or claim 6.
8. application according to claim 7, is characterized in that, described application comprises the following steps:
(1) romaine lettuce is colonizated in the cultivation bed that described water planting romaine lettuce nutritive medium is housed, and nutrient turnover liquid;
(2) pH value of periodic detection nutritive medium, when detected result higher than 6.5 time, use pH adjusting agent pH value is adjusted to 5.5 ~ 6.5.
9. application according to claim 8, is characterized in that, the described nutrient turnover liquid of step (1) is specially: when the nutritive medium in liquid storage tank is consumed to 1/2 of original volume, Additional nutrient solution is to original volume.
10. application according to claim 7, is characterized in that, described application comprises the following steps:
(1) the romaine lettuce Seeding planting launched by two panels true leaf is in the cultivation bed that described water planting romaine lettuce nutritive medium is housed, and provide nutritive medium with water circulating pump, water pump open frequency is 15 minutes/hour;
(2) pH value of periodic detection nutritive medium, when detected result higher than 6.5 time, use by 5% dust technology and the 5% dilute phosphoric acid pH adjusting agent that mixes of 2:1 by volume, pH value be adjusted to 5.5; Gather in the crops to romaine lettuce.
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| CN106538370B (en) * | 2016-11-08 | 2020-07-28 | 佛山佳牧乐科技有限公司 | Vegetable hydroponic culture solution and preparation method thereof |
| CN106718741A (en) * | 2016-12-07 | 2017-05-31 | 张家港丰裕德农业科技有限公司 | A kind of pH value adjusting method of water planting romaine lettuce factorial praluction nutrient solution |
| CN107011051A (en) * | 2017-04-21 | 2017-08-04 | 防城港市丰禾曲辰农业科技有限公司 | A kind of compound method of the nutrient solution prescription of water planting romaine lettuce |
| US11325872B2 (en) | 2019-06-17 | 2022-05-10 | Total Grow LLO | Concentrated aqueous suspension of microfibrillated cellulose comprising salts for plant nutrition |
| CN110463597A (en) * | 2019-09-13 | 2019-11-19 | 河北科技师范学院 | A kind of vegetable aquaculture nursery slot and non-soil culture method |
| CN110606777A (en) * | 2019-10-28 | 2019-12-24 | 北京市农业技术推广站 | Special nutrient solution for hydroponic lettuce and preparation method thereof |
| CN111470898A (en) * | 2020-03-18 | 2020-07-31 | 福建省中科生物股份有限公司 | Solid plant nutrient solution |
| CN111978114A (en) * | 2020-09-03 | 2020-11-24 | 航天神舟生物科技集团有限公司 | Hydroponic planting nutrient solution suitable for balcony and preparation method and application thereof |
| CN112174735A (en) * | 2020-09-30 | 2021-01-05 | 湖北声荣再生资源利用有限公司 | High-concentration soilless culture nutrient solution and use method thereof |
| CN112919954A (en) * | 2021-03-08 | 2021-06-08 | 北京农学院 | Water culture nutrient solution for selenium-rich loose-leaf lettuce as well as preparation method and application of water culture nutrient solution |
| CN114940634A (en) * | 2022-06-07 | 2022-08-26 | 上海派璐斯信息科技有限公司 | Soilless culture nutrient solution and preparation method and application thereof |
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