CN108812265A - A kind of capsicum soilless culture method improving Vitamin C content reduction nitrate content - Google Patents
A kind of capsicum soilless culture method improving Vitamin C content reduction nitrate content Download PDFInfo
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- CN108812265A CN108812265A CN201810571927.9A CN201810571927A CN108812265A CN 108812265 A CN108812265 A CN 108812265A CN 201810571927 A CN201810571927 A CN 201810571927A CN 108812265 A CN108812265 A CN 108812265A
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G31/00—Soilless cultivation, e.g. hydroponics
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/10—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/25—Dry fruit hulls or husks, e.g. chaff or coir
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/20—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material
- A01G24/22—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing plant material
- A01G24/27—Pulp, e.g. bagasse
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G24/00—Growth substrates; Culture media; Apparatus or methods therefor
- A01G24/30—Growth substrates; Culture media; Apparatus or methods therefor based on or containing synthetic organic compounds
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- C—CHEMISTRY; METALLURGY
- C05—FERTILISERS; MANUFACTURE THEREOF
- C05G—MIXTURES OF FERTILISERS COVERED INDIVIDUALLY BY DIFFERENT SUBCLASSES OF CLASS C05; MIXTURES OF ONE OR MORE FERTILISERS WITH MATERIALS NOT HAVING A SPECIFIC FERTILISING ACTIVITY, e.g. PESTICIDES, SOIL-CONDITIONERS, WETTING AGENTS; FERTILISERS CHARACTERISED BY THEIR FORM
- C05G3/00—Mixtures of one or more fertilisers with additives not having a specially fertilising activity
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
- Y02P60/20—Reduction of greenhouse gas [GHG] emissions in agriculture, e.g. CO2
- Y02P60/21—Dinitrogen oxide [N2O], e.g. using aquaponics, hydroponics or efficiency measures
Abstract
A kind of capsicum soilless culture method improving Vitamin C content reduction nitrate content, is selected in the entire breeding time of capsicum using oxamides and plant ash as the growth substrate of key component；In pepper seed from germination to flowering stage, proper amount of clear water is poured daily, in capsicum flowering stage to picking fruit phase, carries out water-fertilizer conditioning by way of adding nutrient solution into soilless culture substrate；Pepper picking the last week carries out light control.Technical method of the invention, which can be not only used for capsicum outdoor cropping, can also be used for greenhouse production, and method is easy to operate, as a result reliable and stable, and the application of chemical fertilizer can also be greatly reduced, and improve utilization rate of fertilizer, reduce the risk of cultivation cost and environmental pollution.
Description
Technical field
The invention belongs to technical field of vegetable cultivation, are more particularly to a kind of soilless cultivation side for improving Quality of Capsicum
Method reduces nitrate content to improve Vitamin C content in capsicum, promotes Quality of Capsicum and edible safety.
Background technique
Since primate includes the missing for synthesizing ascorbic relevant enzyme in mankind's body, the mankind can only be from diet
Absorb vitamin C.Human body is once deficient in vitamin C, will limbs fatigue, resistance decline, wound be difficult to heal, easy infection disease
Disease, therefore vitamin C is a kind of maximum vitamin of human body requirements amount.Fresh fruits and vegetables is mankind's replenishing vitamins C
Best source, among these, capsicum is the vegetables one of most containing vitamin C, thus Vitamin C content be also measure capsicum
One of important indicator of quality.But at the same time, vegetables are also the important sources of human body intake nitrate, these nitrate are in people
It is reduced into nitrite or imines in vivo, huge harm can be all caused to human health.Therefore, how to pass through cultivation technique
Improvement produce the capsicum of homovitamin C content protonitrate content and be one and have realistic meaning and urgent problem to be solved.
Vitamin C depends on glycometabolism in the intracorporal synthesis of plant, and higher Nitrogen Level can promote Plant Light cooperation
With the accumulation for being conducive to glucide, sufficient substrate is provided for ascorbic synthesis.But in chili growth initial stage instant nitrogenousfertilizer
Excessive concentration, is easy to cause burn seedlings, and capsicum fruiting period imposes instant nitrogenousfertilizer that easily lead to capsicum nitrate exceeded, therefore, it is difficult to
Realize the production of homovitamin C content protonitrate content capsicum.And oxamides is as novel slow-release nitrogen fertilizer, it can be in crop
The growth time of infertility smoothly provides nitrogen needed for plant growth, early growth period will not burn seedlings, fruiting period will not make nitrogen excessive,
And degradation process noresidue, have no toxic side effect, it is applied on lawn, flowers and field crop, but oxamides is used as and plants without soil
It trains matrix and there is no report to improve Quality of Capsicum.
On the other hand, the transport of photosynthesis and carbohydrate of crop can also be promoted by increasing potash fertilizer, to promote vitamin C
Formation.But similar with instant nitrogenousfertilizer, the application of quick-acting potash fertilizer excessively will also result in the burn seedlings of crop and the deformity of fruit.Such as
What is managed regulation to the form and delivery mode of potash fertilizer, keeps it reasonably combined with nitrogenous fertilizer, meets the growth and quality of capsicum
It is promoted, it is also desirable to further innovation and optimization.
In addition, photosynthesis of the ascorbic synthesis substrate carbohydrate from plant, therefore illumination is to vitamin in vegetables
C content also has important influence.Chinese patent CN102144503B provides a kind of short-term continuous illumination of utilization and improves leaf vegetables
The method that Vitamin C content reduces nitrate content in vegetables.But the solanaceous vegetables such as capsicum do not eat its blade, in blade
How the carbohydrate of synthesis transports in fruit, synthesis, transport, distribution and the product of vitamin C and nitrate in blade and fruit
Tired is again how to be illuminated by the light influence, how by the regulation of illumination to produce the peppery of homovitamin C content protonitrate content
Green pepper all needs a large amount of test to be explored and optimized.
Summary of the invention
The technical issues of solution：The present invention provides one kind to fill up the above blank to Quality of Capsicum study on regulation
Improving Vitamin C content reduces the capsicum soilless culture method of nitrate content.
Technical solution：A kind of capsicum soilless culture method improving Vitamin C content reduction nitrate content, step are：
A, it selects in the entire breeding time of capsicum using oxamides and plant ash as the growth substrate of key component, wherein the quality of oxamides
Percentage is 3%~6%, and the mass percent of plant ash is 5%~8%；B, in pepper seed from germination to flowering stage, daily
Proper amount of clear water is poured, to keep 70%-75% of the Relative water content as maximum water-holding capacity；It is adopted in capsicum flowering stage to fruit
The phase is plucked, carries out water-fertilizer conditioning by way of adding nutrient solution into soilless culture substrate：Wherein capsicum flowering stage is to first fruiting period
Nitrogen concentration is 10-15mM, phosphorus concentration 1.0-2.0mM, potassium concn 4.0-6.0mM in nutrient solution；Capsicum just fruiting period to fruit
Nitrogen concentration is 2.0-4.0mM, phosphorus concentration 0.5-1.0mM, potassium concn 6.0-8.0mM in collecting period nutrient solution, and nutrient solution pours
Frequency is filled to keep Relative water content as the 60%-70% of maximum water-holding capacity；C, pepper picking the last week carries out light
According to control.
Each component is according to mass percent in above-mentioned soilless culture substrate formula：Decomposed manure is 40%~50%, mushroom
Slag is 30%~36%, river sand is 8%~10%, oxamides is 3%~6%, plant ash is 5%~8%；Decomposed manure by
Cow dung, rape cake and rice straw are according to dry matter weight than 5.4:2.8:1.8 decomposed ferment.
Each component is according to mass percent in above-mentioned soilless culture substrate formula：Decomposed manure 48%, mushroom slag 30%, river
Sand 8%, oxamides solid particle 6%, plant ash 8%.
The solid particle that above-mentioned soilless culture substrate formula medium-height grass amide is 3~4mm of diameter.
The specific method that above-mentioned pepper picking the last week carries out light control is：It is small that daily pepper plant receives illumination 18
When, it is 6 hours dark；Intensity of illumination is 80 μm of olm-2·s-1。
Above-mentioned raising Vitamin C content reduces the capsicum soilless culture method of nitrate content, is suitable for the outdoor cultivation of capsicum
Training or greenhouse production.
Beneficial effect：The invention has the characteristics that：A, soilless culture substrate be added new sustained release nitrogenous fertilizer oxamides with
Nitrogen needed for the steady supply capsicum time of infertility grows；B, in soilless culture substrate raw material using rich in potassium rape cake and
Mushroom slag, and it is equipped with plant ash, to supply potassium needed for chili growth；C, water and fertilizer management is carried out in the different phase of chili growth；
D, illumination regulation is carried out in pepper picking early period.By the cultivation management method of above-mentioned optimization, it can keep steady in yield of hot pepper
It while determining, greatly improves the Vitamin C content in capsicum, reduce nitrate content, and then improve the quality of capsicum and eat
Safety.In conclusion technical method of the invention, which can be not only used for capsicum outdoor cropping, can also be used for greenhouse production, method operation
Simplicity, it is as a result reliable and stable, the application of chemical fertilizer can also be greatly reduced, improve utilization rate of fertilizer, reduce cultivation cost and ring
The risk of border pollution.
Specific embodiment
Below by specific embodiment, further the present invention will be described in detail, but do not limit the invention in any way
Range.Technical solution of the present invention is if not otherwise specified routine techniques.
Embodiment 1
A kind of capsicum soilless culture method (applying powder oxamides) improving Vitamin C content reduction nitrate content,
Its step are as follows：
By the rice straw of cow dung, rape cake and crushing according to dry matter weight than 5.4:2.8:1.8 mixing, are added commercially available
Decomposed manure is made in 50~65 DEG C of decomposed fermentations 20 days or so in compost fermentation after organic fertilizer fermentation agent.Mushroom slag is plantation gold
The culture substrate discarded after needle mushroom, water content about 10%；River sand uses preceding 10 mesh of mistake；Plant ash is formed by rice husk carbonizing.
By the above components according to mass percent：Decomposed manure 48%, mushroom slag 34%, river sand 10%, powder oxalyl
Amine 3%, plant ash 5% is sufficiently mixed, and soilless culture substrate is made.
Soilless culture substrate is packed into growth slot and (grows 30 meters, 5 meters wide, 0.5 meter of depth), full, vernalization is chosen
No. 1 pepper seed of new Bian green pepper be sprinkled into cultivation matrix, thickness of sowing be 20/m2。
In pepper seed from germination to flowering stage, proper amount of clear water is poured daily, to keep Relative water content for maximum
The 70% of water-holding capacity.From capsicum flowering stage to first fruiting period, adequate nutrition liquid A is poured, daily to keep Relative water content to be
The 65% of maximum water-holding capacity, in nutrient solution A nitrogen concentration be 15mM, phosphorus concentration 2.0mM, potassium concn 6.0mM.From fruit at the beginning of capsicum
Phase to picking fruit phase pours adequate nutrition liquid B daily, to keep Relative water content as the 65% of maximum water-holding capacity, battalion
In nutrient solution B nitrogen concentration be 4.0mM, phosphorus concentration 0.5mM, potassium concn 6.0mM.
Pepper picking the last week by green turn it is red when carry out light control, carry out light control, daily pepper plant receives light
It is 6 hours dark according to 18 hours.In 18 hours for receiving illumination, as less than 80 μm olm of natural lighting intensity-2·s-1When,
Intensity of illumination is set to reach 80 μm of olm with LED white light source light filling-2·s-1。
After capsicum reddens completely, picked.
Embodiment 2
It is a kind of improve Vitamin C content reduce nitrate content capsicum soilless culture method (using powder oxamides and
The proportion of optimization), its step are as follows：
By the rice straw of cow dung, rape cake and crushing according to dry matter weight than 5.4:2.8:1.8 mixing, are added commercially available
Decomposed manure is made in 50~65 DEG C of decomposed fermentations 20 days or so in compost fermentation after organic fertilizer fermentation agent.Mushroom slag is plantation gold
The culture substrate discarded after needle mushroom, water content about 10%；River sand uses preceding 10 mesh of mistake；Plant ash is formed by rice husk carbonizing.
By the above components according to mass percent：Decomposed manure 45%, mushroom slag 35%, river sand 10%, powder oxalyl
Amine 4%, plant ash 6% is sufficiently mixed, and soilless culture substrate is made.
Soilless culture substrate is packed into growth slot and (grows 30 meters, 5 meters wide, 0.5 meter of depth), full, vernalization is chosen
No. 1 pepper seed of new Bian green pepper be sprinkled into cultivation matrix, thickness of sowing be 20/m2。
In pepper seed from germination to flowering stage, proper amount of clear water is poured daily, to keep Relative water content for maximum
The 70% of water-holding capacity.From capsicum flowering stage to first fruiting period, adequate nutrition liquid A is poured, daily to keep Relative water content to be
The 65% of maximum water-holding capacity, in nutrient solution A nitrogen concentration be 10mM, phosphorus concentration 2.0mM, potassium concn 6.0mM.From fruit at the beginning of capsicum
Phase to picking fruit phase pours adequate nutrition liquid B daily, to keep Relative water content as the 65% of maximum water-holding capacity, battalion
In nutrient solution B nitrogen concentration be 3.0mM, phosphorus concentration 0.8mM, potassium concn 8.0mM.
Pepper picking the last week by green turn it is red when carry out light control, carry out light control, daily pepper plant receives light
It is 6 hours dark according to 18 hours.In 18 hours for receiving illumination, as less than 80 μm olm of natural lighting intensity-2·s-1When,
Intensity of illumination is set to reach 80 μm of olm with LED white light source light filling-2·s-1。
After capsicum reddens completely, picked.
Embodiment 3
A kind of capsicum soilless culture method (applying particle oxamides) improving Vitamin C content reduction nitrate content,
Its step are as follows：
By the rice straw of cow dung, rape cake and crushing according to dry matter weight than 5.4:2.8:1.8 mixing, are added commercially available
Decomposed manure is made in 50~65 DEG C of decomposed fermentations 20 days or so in compost fermentation after organic fertilizer fermentation agent.
By following each component according to mass percent：Decomposed manure 48%, mushroom slag 36%, river sand 8%, diameter be 3~
Oxamides solid particle 3%, the plant ash 5% of 4mm is sufficiently mixed, and soilless culture substrate is made.
Soilless culture substrate is packed into growth slot and (grows 30 meters, 5 meters wide, 0.5 meter of depth), full, vernalization is chosen
No. 1 pepper seed of new Bian green pepper be sprinkled into cultivation matrix, thickness of sowing be 20/m2。
In pepper seed from germination to flowering stage, proper amount of clear water is poured daily, to keep Relative water content for maximum
The 70% of water-holding capacity.From capsicum flowering stage to first fruiting period, adequate nutrition liquid A is poured, daily to keep Relative water content to be
The 65% of maximum water-holding capacity, in nutrient solution A nitrogen concentration be 15mM, phosphorus concentration 2.0mM, potassium concn 4.0mM.From fruit at the beginning of capsicum
Phase to picking fruit phase pours adequate nutrition liquid B daily, to keep Relative water content as the 65% of maximum water-holding capacity, battalion
In nutrient solution B nitrogen concentration be 3.0mM, phosphorus concentration 1.0mM, potassium concn 8.0mM.
Pepper picking the last week by green turn it is red when carry out light control, daily pepper plant receives illumination 18 hours, dark 6
Hour.In 18 hours for receiving illumination, as less than 80 μm olm of natural lighting intensity-2·s-1When, it is mended with LED white light source
Light makes intensity of illumination reach 80 μm of olm-2·s-1。
After capsicum reddens completely, picked.
Embodiment 4
It is a kind of improve Vitamin C content reduce nitrate content capsicum soilless culture method (using particle oxamides and
The proportion of optimization), its step are as follows：
By the rice straw of cow dung, rape cake and crushing according to dry matter weight than 5.4:2.8:1.8 mixing, are added commercially available
Decomposed manure is made in 50~65 DEG C of decomposed fermentations 20 days or so in compost fermentation after organic fertilizer fermentation agent.
By following each component according to mass percent：Decomposed manure 48%, mushroom slag 30%, river sand 8%, diameter be 3~
Oxamides solid particle 6%, the plant ash 8% of 4mm is sufficiently mixed, and soilless culture substrate is made.
Soilless culture substrate is packed into growth slot and (grows 30 meters, 5 meters wide, 0.5 meter of depth), full, vernalization is chosen
No. 1 pepper seed of new Bian green pepper be sprinkled into cultivation matrix, thickness of sowing be 20/m2。
In pepper seed from germination to flowering stage, proper amount of clear water is poured daily, to keep Relative water content for maximum
The 70% of water-holding capacity.From capsicum flowering stage to first fruiting period, adequate nutrition liquid A is poured, daily to keep Relative water content to be
The 65% of maximum water-holding capacity, in nutrient solution A nitrogen concentration be 14mM, phosphorus concentration 1.5mM, potassium concn 4.0mM.From fruit at the beginning of capsicum
Phase to picking fruit phase pours adequate nutrition liquid B daily, to keep Relative water content as the 65% of maximum water-holding capacity, battalion
In nutrient solution B nitrogen concentration be 2.0mM, phosphorus concentration 0.8mM, potassium concn 6.0mM.
Pepper picking the last week by green turn it is red when carry out light control, daily pepper plant receives illumination 18 hours, dark 6
Hour.In 18 hours for receiving illumination, as less than 80 μm olm of natural lighting intensity-2·s-1When, it is mended with LED white light source
Light makes intensity of illumination reach 80 μm of olm-2·s-1。
After capsicum reddens completely, picked.
Influence of 1 different planting of table to capsicum economic flow rate and quality
Note：With the significant (P of lowercase letter indication difference different after column data in table<0.05)
Relative to commodity seedling medium (CK) it can be seen from 1 result of table, using oxamides containing powder of the present invention
Soilless culture substrate (OX) yield of hot pepper can be made to improve, vitamin content increase；Further implement on the basis of OX processing
Nutrient management (OX+NS) of the present invention can be such that yield of hot pepper further increases, and vitamin content increases, while nitrate
Content reduces；Further implementing illumination management of the present invention (embodiment 1) on the basis of OX+NS processing can protect in yield of hot pepper
It keeps steady under conditions of determining, vitamin content increases, while nitrate content reduces.Using the processing (embodiment of particle oxamides
3) the comparable yield of hot pepper of processing and quality with application powder oxamides also be can get.The raising dimension life optimized on this basis
Plain C content reduces the capsicum soilless culture method (embodiment 2 and 4) of nitrate content compared to control (CK), and capsicum economy produces
Amount improves 7.40%-11.25%, and Vitamin C content increases 77.62%-84.34%, and nitrate content reduces 41.08%-
43.10%.
It can be seen that the Vitamin C content of the present invention that improves reduces the capsicum soilless culture method of nitrate content,
Capsicum economic flow rate not only can be improved, but also 75% or more Vitamin C content can be improved, reduce nitrate content 40% with
On, the quality of capsicum is greatly improved, the edible safety of capsicum is improved.
Above-mentioned technical proposal only embodies the optimal technical scheme of technical solution of the present invention, the professional of the art
The principle of the present invention is embodied to some variations that some of them part may be made, belongs to the scope of protection of the present invention it
It is interior.
Claims (6)
1. a kind of Vitamin C content that improves reduces the capsicum soilless culture method of nitrate content, it is characterised in that step is：A,
It selects in the entire breeding time of capsicum using oxamides and plant ash as the growth substrate of key component, wherein the quality hundred of oxamides
Score is 3% ~ 6%, and the mass percent of plant ash is 5% ~ 8%；B, it in pepper seed from germination to flowering stage, pours daily appropriate
Clear water, to keep 70%-75% of the Relative water content as maximum water-holding capacity；In capsicum flowering stage to the picking fruit phase, pass through
The mode that nutrient solution is added into soilless culture substrate carries out water-fertilizer conditioning：Wherein capsicum flowering stage nitrogen into first fruiting period nutrient solution
Concentration is 10-15 mM, and phosphorus concentration is 1.0-2.0 mM, and potassium concn is 4.0-6.0 mM；Capsicum just fruiting period to the picking fruit phase battalion
Nitrogen concentration is 2.0-4.0 mM in nutrient solution, and phosphorus concentration is 0.5-1.0 mM, and potassium concn is 6.0-8.0 mM, and nutrient solution pours frequency
To keep Relative water content as the 60%-70% of maximum water-holding capacity；C, pepper picking the last week carries out light control.
2. improving Vitamin C content according to claim 1 reduces the capsicum soilless culture method of nitrate content, feature
It is that each component is according to mass percent in soilless culture substrate formula used：Decomposed manure be 40% ~ 50%, mushroom slag be 30% ~
36%, it be 3% ~ 6%, plant ash is 5% ~ 8% that river sand, which is 8% ~ 10%, oxamides,；Decomposed manure is by cow dung, rape cake and rice straw
Stalk is according to dry matter weight than 5.4:2.8:1.8 decomposed ferment.
3. improving Vitamin C content according to claim 2 reduces the capsicum soilless culture method of nitrate content, feature
It is that each component is according to mass percent in soilless culture substrate formula used：Decomposed manure 48%, mushroom slag 30%, river sand 8%,
Oxamides solid particle 6%, plant ash 8%.
4. the raising Vitamin C content according to Claims 2 or 3 reduces the capsicum soilless culture method of nitrate content,
It is characterized in that the solid particle that soilless culture substrate formula medium-height grass amide used is 3 ~ 4 mm of diameter.
5. improving Vitamin C content according to claim 1 reduces the capsicum soilless culture method of nitrate content, feature
It is that described pepper picking the last week carries out the specific method of light control and is：Daily pepper plant receives illumination 18 hours, black
Dark 6 hours；Intensity of illumination is 80 μm of olm-2·s-1。
6. improving Vitamin C content according to claim 1 reduces the capsicum soilless culture method of nitrate content, feature
It is to be suitable for the outdoor cultivation of capsicum or greenhouse production.
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