CN111602527A - Orange ceramsite cuttage method - Google Patents
Orange ceramsite cuttage method Download PDFInfo
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- CN111602527A CN111602527A CN202010670919.7A CN202010670919A CN111602527A CN 111602527 A CN111602527 A CN 111602527A CN 202010670919 A CN202010670919 A CN 202010670919A CN 111602527 A CN111602527 A CN 111602527A
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- 238000000034 method Methods 0.000 title claims abstract description 19
- 235000020971 citrus fruits Nutrition 0.000 claims abstract description 43
- 239000002689 soil Substances 0.000 claims abstract description 40
- 241000207199 Citrus Species 0.000 claims abstract description 37
- 239000000758 substrate Substances 0.000 claims abstract description 20
- 238000005286 illumination Methods 0.000 claims description 8
- 239000011159 matrix material Substances 0.000 claims description 7
- 238000012258 culturing Methods 0.000 claims description 6
- 230000007613 environmental effect Effects 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 239000002362 mulch Substances 0.000 claims 1
- 230000035699 permeability Effects 0.000 abstract description 5
- 235000016709 nutrition Nutrition 0.000 abstract description 3
- 230000035764 nutrition Effects 0.000 abstract description 2
- 241000675108 Citrus tangerina Species 0.000 abstract 2
- 235000015097 nutrients Nutrition 0.000 description 14
- 239000004576 sand Substances 0.000 description 14
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 13
- 206010020649 Hyperkeratosis Diseases 0.000 description 11
- 239000010451 perlite Substances 0.000 description 11
- 235000019362 perlite Nutrition 0.000 description 11
- 239000010455 vermiculite Substances 0.000 description 10
- 235000019354 vermiculite Nutrition 0.000 description 10
- 229910052902 vermiculite Inorganic materials 0.000 description 10
- 238000005507 spraying Methods 0.000 description 9
- 239000000463 material Substances 0.000 description 7
- 241001672694 Citrus reticulata Species 0.000 description 5
- 240000002319 Citrus sinensis Species 0.000 description 5
- 235000005976 Citrus sinensis Nutrition 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 238000002474 experimental method Methods 0.000 description 4
- 239000003337 fertilizer Substances 0.000 description 4
- 230000009286 beneficial effect Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- 238000012986 modification Methods 0.000 description 3
- 230000004048 modification Effects 0.000 description 3
- 241000196324 Embryophyta Species 0.000 description 2
- 239000002609 medium Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 239000003415 peat Substances 0.000 description 2
- 244000025254 Cannabis sativa Species 0.000 description 1
- 241000282414 Homo sapiens Species 0.000 description 1
- 241001093501 Rutaceae Species 0.000 description 1
- XSQUKJJJFZCRTK-UHFFFAOYSA-N Urea Chemical compound NC(N)=O XSQUKJJJFZCRTK-UHFFFAOYSA-N 0.000 description 1
- 238000009825 accumulation Methods 0.000 description 1
- 239000004202 carbamide Substances 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 235000013399 edible fruits Nutrition 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000013467 fragmentation Methods 0.000 description 1
- 238000006062 fragmentation reaction Methods 0.000 description 1
- 239000001963 growth medium Substances 0.000 description 1
- 238000003898 horticulture Methods 0.000 description 1
- 230000001678 irradiating effect Effects 0.000 description 1
- 238000003973 irrigation Methods 0.000 description 1
- 230000002262 irrigation Effects 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 230000003020 moisturizing effect Effects 0.000 description 1
- 230000017074 necrotic cell death Effects 0.000 description 1
- 230000001338 necrotic effect Effects 0.000 description 1
- 230000005855 radiation Effects 0.000 description 1
- 230000029058 respiratory gaseous exchange Effects 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 238000012216 screening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
Classifications
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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
- A01G2/00—Vegetative propagation
- A01G2/10—Vegetative propagation by means of cuttings
-
- 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
-
- 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
- A01G24/12—Growth substrates; Culture media; Apparatus or methods therefor based on or containing inorganic material containing soil minerals
- A01G24/15—Calcined rock, e.g. perlite, vermiculite or clay aggregates
-
- 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
- A01G24/23—Wood, e.g. wood chips or sawdust
-
- 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
- A01G24/28—Growth substrates; Culture media; Apparatus or methods therefor based on or containing natural organic material containing peat, moss or sphagnum
-
- 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
-
- 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
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- Life Sciences & Earth Sciences (AREA)
- Environmental Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Inorganic Chemistry (AREA)
- Biodiversity & Conservation Biology (AREA)
- Engineering & Computer Science (AREA)
- Soil Sciences (AREA)
- Ecology (AREA)
- Forests & Forestry (AREA)
- Wood Science & Technology (AREA)
- Botany (AREA)
- Developmental Biology & Embryology (AREA)
- Cultivation Of Plants (AREA)
Abstract
The invention discloses a citrus ceramsite cutting method, which adopts ceramsite and soil as a substrate for cutting citrus, wherein the ceramsite has low cost, high porosity and good air permeability; the interior is porous, can give certain moist little environment of cuttage oranges and tangerines treetor, and the soil of lower part also can provide nutrition for oranges and tangerines simultaneously. The application provides a new scheme for the cutting culture of citrus.
Description
Technical Field
The invention relates to the field of plant cultivation, in particular to a citrus ceramsite cutting method.
Background
Citrus (Citrus reticulata Blanco) belongs to the Rutaceae family. Sexuality favors warm and humid climates. China is one of the important origin places of citrus, and the citrus is rich in resources, various in excellent varieties and has a cultivation history of more than 4000 years. After long-term cultivation and selection, the oranges become precious fruits for human beings.
In the prior art, citrus seedlings are grown by grafting, cuttage, layering and other modes, wherein cuttage is to cut stems, leaves, roots, buds and the like of citrus (called cutting slips in horticulture), or insert citrus seedlings into soil or sand, or soak citrus seedlings in water, and the citrus seedlings can be planted after rooting, so that the citrus seedlings become independent new plants.
The conventional cutting technology usually selects river sand, perlite, vermiculite, soil and other matrixes, wherein the river sand and the soil are low in cost, but the porosity is low, and the cutting rooting is slow; the cost of the perlite is moderate, but the cutting rooting speed is general, and the perlite is easy to float and overflow after water spraying because of light weight, so that the perlite is inconvenient to manage; the vermiculite has high rooting effect speed in the initial use and high porosity, but the porosity is seriously reduced after fragmentation in the later period to influence the rooting speed, and the cost is high.
Therefore, the prior art lacks a cutting matrix and a method which have low cost, high porosity and rapid rooting speed.
Disclosure of Invention
In view of the above-mentioned shortcomings of the prior art, the present invention aims to provide a method for cutting citrus ceramsite, which is used to solve the problem of slow growth of citrus cutting in the prior art.
In order to achieve the above objects and other related objects, the present invention provides a method for cutting citrus ceramsite, which comprises the steps of cutting citrus branches in a ceramsite substrate for cultivation, wherein the cultivation is performed under the following environmental conditions: the temperature is 25-33 ℃, the relative humidity of air reaches 80-100 percent, and the illumination intensity is 2-200 mu mol/m2S. Obtaining citrus seedlings, and transplanting and planting the seedlings to obtain citrus cutting seedlings.
Further, a soil layer is arranged below the ceramsite layer in the matrix. Preferably, the soil layer can adopt nutrient soil, and the nutrient soil can be commonly used in the prior art for culturing plants and can be obtained commercially. The components of the fertilizer can be common soil matched with other nutritional auxiliary materials, such as various organic fertilizers or chemical fertilizers, and the fertilizer can be prepared by the technical personnel according to the knowledge of the prior art. For example, the grass peat and river sand are prepared according to the volume ratio of 1: 1.
Further, the temperature can be 25-28 ℃, 28-32 ℃, 32-33 ℃; the relative humidity of air can be 80-85%, 85-90%, 90-95%, 95-100%; the illumination intensity is 2-50 mu mol/m2·s、50-100μmol/m2·s、100-150μmol/m2·s、150-200μmol/m2·s。
Further, the cultivation should be carried out without exposure to intense light.
Further, the citrus is watered every 12-24 hours during the culturing. For example, spraying water onto the blades may be used. Generally, the water spraying amount is not easy to be too large, and the blades are kept wet.
Further, the method comprises watering the citrus fruit within 0.5 hours of cutting the citrus fruit in the medium.
Further, the citrus branches are pruned branches, and branch segments with 3-5 buds are reserved. Usually 1-2 leaves on the upper part are kept, the rest leaves on the lower part are removed, and the cut at the lower end of the branch section is inserted into the ceramic particle layer matrix.
Preferably, the air porosity of the soil layer should be between 10-30% and the pH value between 6-7.
Preferably, the thickness of the upper-layer ceramsite is 3-10cm, and the thickness of the lower-layer soil layer is not less than 5 cm.
Preferably, the grain size of the ceramsite can be 1-2 cm.
Preferably, the method comprises covering mulching films above the branches after cuttage.
Furthermore, the selection of the cutting time in spring, summer and autumn is more suitable.
Further, the cultivation can be located indoors, such as in a greenhouse, so that the environment can be conveniently adjusted, and meanwhile, a sunshade net can be arranged for shading to adjust the light intensity.
Another aspect of the invention provides a substrate for growing citrus seedlings, the substrate comprising a ceramsite layer and a soil layer, the ceramsite layer being above the soil layer.
Preferably, the soil layer should have an air porosity of 10-30% and a pH of 6-7.
Preferably, the thickness of the upper-layer ceramsite is 3-10cm, and the thickness of the lower-layer soil layer is not less than 5 cm.
Preferably, the grain size of the ceramsite can be 1-2 cm.
In another aspect of the invention there is provided the use of a substrate as described above for growing citrus seedlings.
Further, the environmental conditions at the time of the culture were set as follows: the temperature is 25-33 ℃, the relative humidity of air reaches 80-100 percent, and the illumination intensity is 2-200 mu mol/m2S; covering a mulching film on the branches after the citrus is cut.
Further, the temperature can be 25-28 ℃, 28-32 ℃, 32-33 ℃; the relative humidity of air can be 80-85%, 85-90%, 90-95%, 95-100%; the illumination intensity is 2-50 mu mol/m2·s、50-100μmol/m2·s、100-150μmol/m2·s、150-200μmol/m2·s。
Further, the cultivation should be carried out without exposure to intense light.
Further, the citrus is watered every 12-24 hours during the culturing. For example, spraying water onto the blades may be used. Generally, the water spraying amount is not easy to be too large, and the blades are kept wet.
Further, the ceramsite and the soil jointly form a culture medium for culturing the citrus seedlings.
As described above, the citrus ceramsite cutting method provided by the invention has the following beneficial effects:
the invention aims at two conditions of rooting in cuttage: air permeability and environmental humidity, and screening out the medium material for orange cuttage by using ceramsite. The ceramsite has low cost, high porosity and good air permeability; the interior is porous, can give certain moist little environment of cuttage oranges and tangerines branch and tip. Meanwhile, the soil at the lower part can also provide nutrition for the citrus.
Detailed Description
The embodiments of the present invention are described below with reference to specific embodiments, and other advantages and effects of the present invention will be easily understood by those skilled in the art from the disclosure of the present specification. The invention is capable of other and different embodiments and of being practiced or of being carried out in various ways, and its several details are capable of modification in various respects, all without departing from the spirit and scope of the present invention.
Example 1
Experimental Material
The cuttage material is a seedling sweet orange Citrus reticulata Blanco branch, and the substrate is respectively selected from ceramsite (with the grain diameter of about 1-2 cm), perlite (with the grain diameter of about 1-5 mm), vermiculite (with the grain diameter of about 1-10 mm), river sand (with the grain diameter of about 0.25-0.5 mm) and nutrient soil (prepared from sawdust and river sand according to the volume ratio of 1: 1).
Experimental methods
5 treatment groups are set in the experiment, sweet orange branches are respectively cut by 5 substrates of ceramsite, perlite, vermiculite, river sand and nutrient soil, and the callus formation and rooting conditions of the branches are observed and recorded. 50 shoots were inserted per treatment group.
The branch cuttage experiment method comprises the following steps: in 4 months of 2015, at the institute of Chongqing Beijiemmashi orange, orange branches are cut into branch segments containing 3-5 buds, the lower leaves are removed, and 1-2 leaves at the upper part are remained; then inserted into a matrix; spraying water to thoroughly wet the substrate and the citrus branch sections; culturing in a place without water at 25-33 deg.C under strong light irradiation and with certain light (light intensity of 2-200 μmol/m2 s) until the environment is kept moist (relative humidity of 80-100%), spraying water to the leaves once or twice a day for moisturizing, and observing the rooting condition of the branch after the root grows out.
TABLE 1 Table of callus formation and rooting conditions of shoots at different times after cuttage
Results and analysis
And checking the formation condition and rooting condition of the callus of the branch starting 3 days after cuttage. As seen from Table 1, the number of shoots in the ceramsite after 3 days of cuttage formed callus was the largest, and then small amount of shoots in vermiculite, perlite and river sand formed callus, and no callus was formed in the shoots in the nutrient soil. A large amount of calluses are generally formed 10 days after cuttage, and the results show that all branches in the ceramsite form the calluses, all branches in the vermiculite and the perlite form the calluses basically, and almost half branches in the river sand and the nutrient soil form the calluses.
The rooting condition of the branches is investigated, about one fifth of the branches of the ceramsite component are rooted 10 days after cuttage, few branches of the vermiculite and the perlite are rooted, and the rooting condition of the branches is not found in river sand and nutrient soil. 15 days after cuttage, nearly four fifths of branches in the ceramsite group take roots, a small part of branches in vermiculite and perlite take roots, and a small part of branches in river sand and nutrient soil take roots. After 20 days of cuttage, most branches in the ceramsite, vermiculite and perlite root, and only a small half of the branches in the river sand and the nutrient soil root 30 days after cuttage.
In the later stage, the rooted branches are transplanted for the second time, and the necrotic and rotten root condition of about 20 percent of root systems is found, because the newly germinated new roots are very young and tender and are easy to be infected by scratching if the newly germinated new roots are careless, the branches are not suitable to be transplanted immediately after rooting, and the transplanting is carried out after the root systems grow in a large amount and age.
The results show that the haydite cutting branches are most beneficial to forming callus and rooting, and then vermiculite and perlite are added, the effects of river sand and nutrient soil are not ideal, and the branches are not suitable for being transplanted immediately after rooting.
Example 2
Experimental Material
The cuttage material is a seedling sweet orange Citrus reticulata Blanco branch, the upper layer of the substrate is ceramsite (the grain diameter is about 1-2 cm), and the lower layer is nutrient soil (peat and river sand are prepared according to the volume ratio of 1: 1).
Experimental methods
According to the results of example 1, the ceramsite with the best rooting effect is selected as the rooting substrate, in order to be beneficial to the excellent growth of the root system after rooting, the nutrient soil is selected as the substrate for further growth and development of the new root system of the sweet orange branch, and the nutrient soil with the thickness of 5cm is placed on the lower layer in the container, and the ceramsite with the thickness of 10cm is placed on the upper layer. 30 branches are cut in the treatment.
In 5 months in 2019, at ChongqingOrange branch is cut into branch segments containing 3-5 buds, the lower leaves are removed, and 1-2 leaves on the upper part are remained; then inserting into the ceramic particle layer; spraying water to thoroughly wet the substrate and the citrus branch sections; then, covering a film on the branches to better keep the branches in a high-humidity small environment; placing at 25-33 deg.C, and under certain illumination (illumination intensity of 2-200 μmol/m) without strong light2S) and no water accumulation, until the environment is kept moist (relative humidity 80% -100%) during the beginning of rooting, spraying water to the leaves once or twice a day to moisturize the leaves, and observing the rooting condition of the branch segments after the roots grow out. And after 30 days of cuttage, watering once in 10 days.
Results and analysis
After 25 days of cutting, most (more than 95%) branches are observed to have rooted, and root systems enter a soil layer to grow. After 30 days, 40 days and 60 days of cuttage, the rooted seedlings are observed, and after the irrigation mode is changed into a conventional seedling watering mode, the rooted seedlings in cuttage grow normally, the condition that leaves drop due to water shortage does not occur, and the condition that 1 case of root system of the cuttage seedlings is rotten in a soil layer does not occur, so that the root system of the cuttage seedlings grows well in the soil layer, and root system rotting caused by secondary transplanting in example 1 is avoided.
Conclusion and discussion
According to the 2 embodiments, under the condition of proper temperature, the leaves of the cuttage branches are kept in a humid environment, and compared with other matrixes, the ceramsite cuttage sweet orange branches are easier to root. Analysis shows that compared with other matrixes, the ceramsite has higher air porosity, and well ensures the respiration of the cuttage branches, so that the cuttage branches are more favorable for rooting. In actual operation, attention needs to be paid to avoid thermal radiation damage caused by strong sunlight irradiating branches of cuttage leaves; the branches are not taken out frequently to check the rooting condition, otherwise, the rooting failure or root system necrosis is easily caused; furthermore, a single ceramsite substrate is changed into an upper-layer combined substrate and a lower-layer combined substrate, namely the upper layer is ceramsite and the lower layer is nutrient soil, the double-layer substrate can promote the root system of the cutting seedling to grow and directly enter the conventional management, and the root rot condition caused by the damage of secondary transplanting to the root system is avoided; in addition, the cuttage branches can be covered with a film to ensure that the cuttage branches are in a high-humidity air environment, so that the cuttage branches are easy to root successfully. Therefore, after the cuttage branches take roots and sprout, the extra-root topdressing with 0.1% urea sprayed on the leaf surfaces can be adopted to promote the growth of the branch tips to be stronger, and the transplanting effect of the cuttage seedlings at the later stage can be better.
The invention screens and utilizes ceramsite as a substrate material for citrus cuttage aiming at two conditions of rooting in cuttage, namely good air permeability and moist environmental condition. The ceramsite has low cost, high porosity and good air permeability; the interior is porous, can give certain moist little environment of cuttage oranges and tangerines branch and tip.
The above examples are intended to illustrate the disclosed embodiments of the invention and are not to be construed as limiting the invention. In addition, various modifications of the methods and compositions set forth herein, as well as variations of the methods and compositions of the present invention, will be apparent to those skilled in the art without departing from the scope and spirit of the invention. While the invention has been specifically described in connection with various specific preferred embodiments thereof, it should be understood that the invention should not be unduly limited to such specific embodiments. Indeed, various modifications of the above-described embodiments which are obvious to those skilled in the art to which the invention pertains are intended to be covered by the scope of the present invention.
Claims (10)
1. A citrus ceramsite cutting method comprises the step of cutting citrus branches in a ceramsite-containing matrix for culture, wherein the culture is carried out under the following set environmental conditions: the temperature is 25-33 ℃, the relative humidity of air reaches 80-100 percent, and the illumination intensity is 2-200 mu mol/m2·s。
2. The method of claim 1, wherein a soil layer is disposed below the layer of ceramic particles in the matrix.
3. The method according to claim 1, characterized in that it comprises any one or several of the following technical features:
a. strong light irradiation should be avoided during the culture;
b. watering the oranges every 12-24 hours during the culture;
c. the method comprises watering the citrus fruit within 0.5 hour after cutting the citrus fruit in the medium;
d. the citrus branches are trimmed branches, and branch sections with 3-5 buds are reserved;
e. the method comprises the step of covering a mulching film on the top of the branches after citrus is cut.
4. The method according to claim 2, characterized in that it comprises any one or several of the following technical features:
a. the air porosity of the soil layer is 10-30%; the pH value is 6-7, and the pH value is lower than the pH value,
b. the thickness of the upper layer ceramsite is 3-10cm, the thickness of the lower layer soil layer is not less than 5cm,
c. the grain size of the ceramsite is 1-2 cm.
5. A substrate for growing citrus seedlings, the substrate comprising a ceramsite layer and a soil layer, the ceramsite layer being above the soil layer.
6. The matrix according to claim 5, characterized in that it comprises any one or several of the following technical features:
a. the air porosity of the soil layer is 10-30%, and the pH value is 6-7;
b. the thickness of the upper-layer ceramsite is 3-10cm, and the thickness of the lower-layer soil layer is not less than 5 cm;
c. the grain size of the ceramsite is 1-2 cm.
7. Use of a substrate according to any one of claims 5-6 for growing citrus seedlings.
8. Use according to claim 7, characterized in that the culture is carried out under ambient conditions: the temperature is 25-33 ℃, the relative humidity of air reaches 80-100 percent, and the illumination intensity is 2-200 mu mol/m2·s。
9. Use according to claim 7, wherein the culturing is carried out while avoiding exposure to intense light, and wherein the citrus fruit is watered every 12 to 24 hours.
10. Use according to claim 7, wherein the citrus fruit is covered with a mulch film over the shoots after cutting.
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2020
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| CN104041391A (en) * | 2013-03-12 | 2014-09-17 | 齐黄河 | Novel indoor soilless culture substrate |
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