CN112997787B - Rapid seedling raising method for half-mangrove plant silver leaf tree - Google Patents
Rapid seedling raising method for half-mangrove plant silver leaf tree Download PDFInfo
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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
- A01G17/00—Cultivation of hops, vines, fruit trees, or like trees
- A01G17/005—Cultivation methods
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- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C1/00—Apparatus, or methods of use thereof, for testing or treating seed, roots, or the like, prior to sowing or planting
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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
- A01G24/10—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
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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
- A01G25/00—Watering gardens, fields, sports grounds or the like
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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
- Y02A—TECHNOLOGIES FOR ADAPTATION TO CLIMATE CHANGE
- Y02A40/00—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production
- Y02A40/10—Adaptation technologies in agriculture, forestry, livestock or agroalimentary production in agriculture
- Y02A40/22—Improving land use; Improving water use or availability; Controlling erosion
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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
- Y02P60/40—Afforestation or reforestation
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Abstract
The invention relates to the technical field of forestry afforestation, in particular to a method for quickly growing seedlings of a semi-mangrove plant, namely a silver leaf tree, which comprises the following steps: (1) seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests, and sterilizing; (2) pretreatment of fruits: cutting off part of the shell of the disinfected silver leaf tree fruit, removing fruit with poor endosperm development, and soaking in the solution A for accelerating germination; (3) land preparation: flattening the seedbed to ensure smooth drainage and remove weeds; (4) matrix configuration: preparing a culture medium by adopting sea mud, sea sand and plant ash; (5) planting: planting the fruits after germination acceleration in a nutrition bag filled with a culture medium; (6) transplanting seedlings: transplanting the silver leaf trees into the non-woven fabric bags filled with the culture medium in the step (4) when the height of the seedlings of the silver leaf trees is 20-30cm, and taking the seedlings out of the nursery garden when the height of the seedlings is 45-55 cm. The invention has the advantages of good germination rate, seedling preservation rate, seedling height effect and short seedling culture period.
Description
Technical Field
The invention relates to the technical field of forestry afforestation, in particular to a method for quickly growing seedlings of a half-mangrove plant, namely a silver leaf tree.
Background
The semi-mangrove plant refers to an amphibious woody plant which can survive in intertidal zones, become a dominant species on beaches and naturally reproduce in land environments.
The silver leaf tree (the name: heritiera littoralis Dryand.) is a plant of genus silver leaf tree of family Sterculiaceae, is distributed in the intertidal zone of tropical and subtropical coast or the continental margin of estuary coast, and is an amphibian red tree rare plant which can grow in the intertidal zone and on the land. The small branches and the back surfaces of the leaves of the silver-leaf trees are blighted by silvery white scales, so that the silver-leaf trees can reflect strong light, reduce temperature and reduce water loss, and are named accordingly. The root of the trunk of the silver leaf tree is provided with the uniform-thickness slabs protruding out of the soil surface layer, the slabs play a role in supporting and fixing the tree body, and the capabilities of resisting typhoon, flushing of tide and breathing area of the root can be increased. The fruit shell of the silver leaf tree is thick and solid, and is difficult to crack, and the seeds generally germinate with the shell. The germination of fruits directly influences the update and establishment of populations and is a key link for population propagation.
The silver leaf tree wood is hard and is good material for building, shipbuilding and furniture manufacturing; the seeds of the edible oil can be used for extracting oil, and have certain edible value; the bark of the tree can be decocted to obtain decoction for treating hematuria, diarrhea, dysentery, etc., and has high medicinal value. The silver leaf trees are typical ones except for high material and medicinal values, and have good wind resistance, great and beautiful tree shapes, fantastic leaf and fruit shapes, blooming and fruiting habits of stems, and good ornamental values, and are important landscape tree species in southern subtropical zones and tropical coastal cities, and also are the most potential afforestation species for reconstructing coastal protection forests in our province. The adaptability of the silver leaf trees to two different ecological environments of intertidal zone and land provides great convenience for mangrove afforestation.
As the silver leaf trees have certain economic value, the silver leaf trees are excessively felled in a growing place, meanwhile, the area of the mangrove forest is reduced due to large-area reclamation and large-scale aquaculture ponds, factors such as urbanization, environmental pollution and the like are added, the growing environment of the silver leaf trees gradually disappears, the floating seeds are prevented from being spread due to the fact that most of naturally spread water areas are artificially utilized or water quality is polluted, wild populations and individuals are reduced dramatically, and only a few mangrove forest communities taking the silver leaf trees as dominant species are seen at present.
Chinese patent application CN101524042A discloses a seedling raising technology for silver leaf tree fruits, which is to cultivate silver leaf tree seedling products by processing collected silver leaf tree fruits through fresh fruits, preparing soil before sowing, sowing and managing after sowing. The method is a development technology of mangrove forest silver leaf tree fruits as mass production silver leaf tree seedlings, is an innovative technology of mangrove forest resource scientific research, has the effects of high silver leaf tree fruit emergence rate, regular emergence and low economic cost, and has wide market prospect. However, the germination rate, seedling preservation rate and seedling height of the seedling raising method need to be improved.
Chinese patent application CN104206144 discloses a method for seedling breeding and cultivation of mangrove plant silver leaf trees, which comprises the following steps: step A: selecting 5-20 years old plant without plant diseases and insect pests as mother tree, harvesting fruits with plump shape and dark brown pericarp in 8-10 months per year, sterilizing, sun drying, and packaging; and B: storing the fruits in sandy soil; step C: selecting nursery lands, sterilizing the seedbed matrix, and directly sowing the silver leaf tree fruits after 10-15 days; step D: domesticating the silver leaf saplings in a halophytic environment and a fresh water environment; step E: after the silver leaf tree seedlings grow to 0.8-1.5m, the seedlings are unearthed and transplanted, and then natural sea mud at seaside is placed at the bottoms of planting holes to be transplanted for strengthening the seedlings. The invention enlarges the growing range of the silver leaf tree seedlings, and the bred seedlings can be planted in the intertidal zone environment which can be directly reached by seawater and can also be planted on land far away from the seawater, thereby being beneficial to afforestation and propagation of the silver leaf trees and being suitable for protection and production as well as landscape application of silver leaf tree resources. However, the germination rate, seedling preservation rate and seedling height of the seedling raising method also need to be improved.
Therefore, it is necessary to develop a method for rapidly growing seedlings of the silver leaf trees of the semi-mangrove plant, which can solve the above technical problems.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide a method for quickly growing seedlings of the silver leaf trees of the semi-mangrove plants, which has high germination rate, high seedling storage rate, high seedling height and short seedling growing period.
The invention is realized by the following technical scheme:
a method for quickly raising seedlings of a semi-mangrove plant, namely a silver leaf tree comprises the following steps:
(1) Seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests, and sterilizing;
(2) Pretreatment of fruits: cutting off part of shells of disinfected silver leaf tree fruits, removing fruits with poor endosperm development, and soaking in the solution A for accelerating germination;
(3) Land preparation: flattening the seedbed to ensure smooth drainage and remove weeds, and the seedbed is used as a seedling raising field;
(4) Matrix configuration: preparing a culture medium by adopting at least one of sea mud, sea sand and plant ash;
(5) Planting: planting the fruits after germination acceleration in a nutrition bag filled with a culture medium;
(6) Transplanting seedlings: transplanting the silver leaf trees into the non-woven fabric bags filled with the culture medium in the step (4) when the height of the seedlings of the silver leaf trees is 20-30cm, and taking the seedlings out of the nursery garden when the height of the seedlings is 45-55 cm.
Preferably, the specific process of the disinfection in the step (1) is to soak the silver-leaved tree fruits in 0.03-0.5wt% potassium permanganate solution for 1-2h.
Preferably, in step (1), the fruit is harvested from late 9 to mid 10 months.
More preferably, step (1) comprises the steps of:
seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests in the late 9 th to the middle 10 th months, and soaking the silver leaf tree fruits in 0.03-0.5wt% potassium permanganate solution for 1-2h for disinfection.
Preferably, the part of the fruit shell in the step (2) is the fruit shell of the silverleaf tree with the length of 1/3-2/5. And (3) when the cutting is carried out in the step (2), cutting is started from the pedicel end of the silver leaf tree fruit along the length direction of the fruit. The length direction is the direction from the pedicel end to the bottom end of the fruit.
Preferably, the solution A in the step (2) is at least one of gibberellin solution, indoleacetic acid solution and 6-benzyladenine solution.
Preferably, the soaking time in the step (2) is 1.5-3.5h.
More preferably, the concentration of the gibberellin solution is 100-150mg/L, the concentration of the indoleacetic acid solution is 150-180mg/L, and the concentration of the 6-benzyladenine solution is 20-50mg/L.
More preferably, in the step (2), the fruit of the silver leaf tree is firstly soaked in the gibberellin solution for 0.5 to 1.5 hours, then soaked in the indoleacetic acid solution for 0.5 to 1 hour, and finally soaked in the 6-benzyladenine solution for 0.5 to 1 hour.
More preferably, the step (2) comprises the steps of:
pretreatment of fruits: cutting 1/3-2/5 of the nut shell length from the pedicel end of the disinfected silver leaf tree fruit, removing fruit with poor endosperm development, soaking in 100-150mg/L gibberellin solution for 0.5-1.5h, soaking in 150-180mg/L indoleacetic acid solution for 0.5-1h, and soaking in 20-50 mg/L6-benzyladenine solution for 0.5-1h for germination acceleration.
Preferably, the silver-leaf tree fruit in the step (2) is soaked in a mixed solution of acetic acid, 5-20wt% hydrochloric acid and potassium nitrate for 1-3h before being soaked in the solution A.
More preferably, the mass ratio of the acetic acid, 5-20wt% hydrochloric acid and potassium nitrate is 1.
More preferably, the step (2) comprises the steps of:
pretreatment of fruits: cutting 1/3-2/5 of shells of disinfected silver leaf tree fruits, removing fruits with poor endosperm development, soaking the fruits for 1-3h in a mixed solution of acetic acid, 5-20wt% of hydrochloric acid and potassium nitrate (the mass ratio of the acetic acid to the 5-20wt% of hydrochloric acid to the potassium nitrate is 1.
Preferably, the step (3) comprises the steps of:
land preparation: leveling the seedbed, digging ditches in proper areas to ensure smooth drainage and removing weeds, floaters and garbage.
Preferably, the culture medium in the step (4) is a mixture of sea mud and sea sand, and the volume ratio of the sea mud to the sea sand is 1-2.
More preferably, the step (4) comprises the steps of:
(4) Matrix configuration: preparing a culture medium by adopting sea mud and sea sand, wherein the volume ratio of the sea mud to the sea sand is 1-2.
Preferably, 50% -60% of the fruit thickness is pressed into the culture medium during the planting in step (5).
When the fruits are planted, the fruits are horizontally pressed into the culture medium, and the pressing depth is 50% -60% of the thickness of the fruits. That is 50-60% of the fruit thickness is pressed into the matrix, the remainder being exposed to air.
The fruit is horizontally pressed into the culture medium, and the horizontal direction means that the length direction of the fruit is parallel to the ground plane.
Preferably, the sprinkling irrigation process in the planting process in the step (5) is as follows: the seeds are planted in the 1 st week, morning and evening respectively, and the seeds are sprayed for 1-1.5 hours, so that the surface soil of the seeds and the culture substrate is kept 1-2cm wet; sprinkling for 1 time every day for 2 weeks to 3 weeks, and sprinkling for 1 hour to 1.5 hours; 4-6 weeks, 1-2 times per week, 1-1.5 hours per time; then the sprinkler irrigation is carried out for 1 to 2 times per month, and the sprinkler irrigation is carried out for 1 to 1.5 hours each time.
More preferably, the sprinkling time in the morning is 7-9 points and the sprinkling time in the evening is 16-18 points.
More preferably, the average water content of the surface soil of the culture substrate is 20-40% at a depth of 1-2cm after each spray irrigation.
More preferably, the step (5) comprises the steps of:
planting: planting the fruits after germination acceleration in a nutrition bag (with the specification of 12cm multiplied by 12 cm) filled with a culture medium, pressing 50-60% of the thickness of the fruits into the culture medium in the planting process, and performing spray irrigation as follows: in the 1 st week of planting, the seeds are respectively sprayed for 1-1.5 hours in the morning and evening (the spraying time in the morning is 7-9 points, and the spraying time in the evening is 16-18 points); sprinkling for 1 time every day for 2 weeks to 3 weeks, and sprinkling for 1 hour to 1.5 hours; 4-6 weeks, 1-2 times per week, 1-1.5 hours per time; then (winter-next spring) sprinkling for 1-2 times per month, and 1-1.5 hours for each sprinkling; after each spray irrigation, the average water content of the surface soil of the culture substrate is 20-40% at the depth of 1-2 cm.
Preferably, the specification of the non-woven cloth bag in the step (6) is 24cm multiplied by 24cm.
The beneficial effects of the invention are:
the germination accelerating process of the silver leaf tree fruits is optimized, the fruit shells are partially cut off, the fruits are soaked in the solution A, the composition of the solution A and the soaking process are optimized, and the germination rate, the preservation rate and the seedling height of the silver leaf tree fruits are remarkably improved.
Before the silver leaf tree fruits are soaked in the solution A, the mixed solution of acetic acid, 5-20wt% of hydrochloric acid and potassium nitrate is adopted for soaking treatment, so that the germination rate, the preservation rate and the seedling height of the silver leaf tree fruits are further improved.
The invention optimizes the specific composition of the culture medium, and further improves the germination rate, the preservation rate and the seedling height of the silver leaf tree fruits.
The invention optimizes the sprinkling irrigation process in the planting process of the silver leaf tree fruits, is beneficial to the germination of the silver leaf tree fruits, and simultaneously improves the preservation rate and the seedling height of the silver leaf tree fruits.
The invention shortens the seedling raising period, and the seedlings can meet the requirements of outplanting within 1 year.
Detailed Description
The invention is further described below in conjunction with specific embodiments, and the advantages and features of the invention will become more apparent as the description proceeds. These examples are illustrative only and do not limit the scope of the present invention in any way. It will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the spirit and scope of the invention, and that such changes and substitutions are intended to be within the scope of the invention.
Example 1
A method for quickly raising seedlings of a semi-mangrove plant, namely a silver leaf tree comprises the following steps:
(1) Seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests in the last 10 th month, and soaking the silver leaf tree fruits in 0.03wt% potassium permanganate solution for 1h for disinfection;
(2) Pretreatment of fruits: cutting 1/3 of the husk (from the pedicel end) of the disinfected fruit of the silver leaf tree to expose white endosperm, removing the fruit with dysplasia of endosperm, soaking in 100mg/L gibberellin solution for 0.5h, then soaking in 150mg/L indoleacetic acid solution for 0.5h, and finally soaking in 20 mg/L6-benzyladenine solution for 0.5h for pregermination;
(3) Land preparation: flattening the seedbed to ensure smooth drainage and remove weeds;
(4) Preparing a culture medium: the culture medium is a mixture of sea mud and sea sand, and the volume ratio of the sea mud to the sea sand is 1;
(5) Planting: planting the fruit after pregermination in a nutrition bag (with the specification of 12cm multiplied by 12 cm) filled with culture medium, pressing 50% of the fruit thickness into the culture medium in the planting process, and performing spray irrigation as follows: in the 1 st week of planting, sprinkling for 1 hour in the morning and evening (sprinkling for 7 am and 16 pm); sprinkling for 1 time every morning for 2-3 weeks for 1 hour; 4-6 weeks, 1 time of sprinkling irrigation every week for 1 hour; then (winter-spring of next year) spray irrigation for 1 time per month, and spray irrigation for 1 hour each time; after each spray irrigation, the average water content of the surface soil of the culture substrate with the depth of 1cm is 20 percent;
(6) Transplanting seedlings: and (5) transplanting the silver leaf trees into a non-woven bag (with the specification of 24cm multiplied by 24 cm) filled with the culture medium in the step (4) when the height of the seedlings is 20cm, and taking the seedlings out of the nursery garden when the height of the seedlings is 45 cm.
Example 2
A method for quickly raising seedlings of a semi-mangrove plant, namely a silver leaf tree comprises the following steps:
(1) Seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests in the last 10-month ten days, and soaking the silver leaf tree fruits in 0.5wt% potassium permanganate solution for 2h for disinfection;
(2) Pretreatment of fruits: cutting 2/5 of the shell of the disinfected silver leaf tree fruit (cutting from the end of the fruit stalk) to expose white endosperm, removing fruit with poor endosperm development, soaking in 150mg/L gibberellin solution for 1.5h, soaking in 180mg/L indoleacetic acid solution for 1h, and soaking in 50 mg/L6-benzyladenine solution for 1h for pregermination;
(3) Land preparation: flattening the seedbed to ensure smooth drainage and remove weeds;
(4) Preparing a culture medium: the culture medium is a mixture of sea mud and sea sand, and the volume ratio of the sea mud to the sea sand is 1.5;
(5) Planting: planting the fruits after germination acceleration in a nutrition bag (with the specification of 12cm multiplied by 12 cm) filled with a culture medium, pressing 60 percent of the thickness of the fruits into the culture medium in the planting process, and performing spray irrigation as follows: in the 1 st week of planting, the seeds are respectively sprayed for 1.5 hours in the morning and evening (the spraying time in the morning is 9 points, and the spraying time in the evening is 18 points); sprinkling for 1 time every morning for 2-3 weeks, and sprinkling for 1.5 hours; sprinkling for 2 times every week for 4 weeks to 6 weeks, and sprinkling for 1.5 hours each time; then (winter-spring of next year) spray irrigation 2 times per month, each spray irrigation 1.5 hours; after each spray irrigation, the average water content of the surface soil of the culture substrate with the depth of 2cm is 40 percent;
(6) Transplanting seedlings: and (3) transplanting the silver leaf trees into a non-woven bag (with the specification of 24cm multiplied by 24 cm) filled with the culture medium in the step (4) when the height of the seedlings of the silver leaf trees is 30cm, and taking the seedlings out of the nursery when the height of the seedlings is 55 cm.
Example 3
A method for quickly raising seedlings of a semi-mangrove plant, namely a silver leaf tree comprises the following steps:
(1) Seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests in the last 10-month ten days, and soaking the silver leaf tree fruits in 0.25wt% potassium permanganate solution for 1.5h for disinfection;
(2) Pretreatment of fruits: cutting 1/3 of the husk (from the pedicel end) of the disinfected fruit of the silver leaf tree to expose white endosperm, removing fruit with dysplasia of endosperm, soaking in 120mg/L gibberellin solution for 1h, then soaking in 160mg/L indoleacetic acid solution for 0.75h, and finally soaking in 35 mg/L6-benzyladenine solution for 0.75h for pregermination;
(3) Land preparation: flattening the seedbed to ensure smooth drainage and remove weeds;
(4) Preparing a culture medium: the culture medium is a mixture of sea mud and sea sand, and the volume ratio of the sea mud to the sea sand is 2;
(5) Planting: planting the fruit after pregermination in a nutrition bag (with the specification of 12cm multiplied by 12 cm) filled with culture medium, pressing 55% of the fruit thickness into the culture medium in the planting process, and performing spray irrigation as follows: the planting is carried out for 1 hour in the morning and at night (the sprinkling irrigation time in the morning is 8 points, and the sprinkling irrigation time in the evening is 17 points) every day in the 1 st week; sprinkling for 1 time every morning for 2-3 weeks for 1 hour; 4-6 weeks, 1 time of sprinkling irrigation every week, 1.5 hours of sprinkling irrigation every time; then (winter-spring of next year) sprinkling for 2 times per month, and sprinkling for 1 hour each time; after each spray irrigation, the average water content of the surface soil of the culture substrate is 30% at the depth of 1.5 cm;
(6) Transplanting seedlings: and (3) transplanting the silver leaf trees into a non-woven bag (with the specification of 24cm multiplied by 24 cm) filled with the culture medium in the step (4) when the height of the seedlings is 25cm, and taking the seedlings out of the nursery when the height of the seedlings is 50 cm.
Example 3-1
The difference from example 3 is only that the length of the shell is different from that of the shell cut in step (2), only 1/6 of the shell is cut, and the conditions are the same.
Examples 3 to 2
The difference from example 3 is only that the length of the husk is cut off in step (2), and the conditions are the same except that 1/2 of the husk is cut off.
Examples 3 to 3
The difference from the example 3 is only that the step (2) is different, and the rest conditions are the same, which are as follows:
(2) Pretreatment of fruits: cutting 1/3 of the shell of the disinfected silver leaf tree fruit (from the end of the fruit stalk) to expose white endosperm, removing the fruit with poor endosperm development, soaking in 160mg/L indoleacetic acid solution for 0.75h, soaking in 120mg/L gibberellin solution for 1h, and soaking in 35 mg/L6-benzyladenine solution for 0.75h to accelerate germination.
Examples 3 to 4
The difference from example 3 is only that the substrate in step (4) is different, only sea mud, and the rest conditions are the same.
Examples 3 to 5
The difference from example 3 is only that the substrate in step (4) is different, and is a mixture of sea mud and plant ash, the volume ratio of the sea mud to the plant ash is 2.
Examples 3 to 6
The difference from example 3 is only that the substrate in step (4) is different, and the substrate is a mixture of sea mud and sea sand, the volume ratio of the sea mud to the sea sand is 1.
Example 4
The difference from the example 3 is only in the step (2), and the other conditions are the same, specifically as follows:
pretreatment of fruits: cutting 1/3 of shells of disinfected silver leaf tree fruits (cutting from pedicel ends), exposing white endosperm, removing fruits with dysplasia of endosperm, soaking the fruits in a mixed solution of acetic acid, 5wt% of hydrochloric acid and potassium nitrate (the mass ratio of the acetic acid to the 5wt% of hydrochloric acid to the potassium nitrate is 1.005).
Example 5
The difference from the example 3 is only that the step (2) is different, and the rest conditions are the same, which are as follows:
pretreatment of fruits: cutting 1/3 of shells of disinfected silver leaf tree fruits (cutting from the end of a fruit base) to expose white endosperm, removing fruits with poor endosperm development, soaking the fruits in a mixed solution of acetic acid, 20wt% hydrochloric acid and potassium nitrate (the mass ratio of the acetic acid to the 20wt% hydrochloric acid to the potassium nitrate is 1.
Effects of the invention
Examples 1-5 fruit germination at week 6 of planting and seedling survival and seedling height tests at 2 months to 11 months of planting, the results are shown in table 1.
TABLE 1
The above detailed description is directed to one of the possible embodiments of the present invention, which is not intended to limit the scope of the invention, but rather the scope of the invention is intended to include all equivalent implementations or modifications without departing from the scope of the invention.
Claims (1)
1. A method for quickly raising seedlings of a semi-mangrove plant, namely a silver leaf tree is characterized by comprising the following steps:
(1) Seed collection and disinfection: collecting mature silver leaf tree fruits without insect pests, soaking the silver leaf tree fruits in 0.25wt% potassium permanganate solution for 1.5h for disinfection;
(2) Pretreatment of fruits: cutting off 1/3 of the shell length of the disinfected silver leaf tree fruit from the end of the fruit base, and removing the fruit with poor endosperm development by using a mass ratio of 1:5:0.005 of mixed solution of acetic acid, 5wt% of hydrochloric acid and potassium nitrate is soaked for 3 hours or the mixed solution is soaked in the mixed solution of 1:20:0.1 of mixed solution of acetic acid, 20wt% of hydrochloric acid and potassium nitrate is soaked for 1 hour; firstly soaking in 120mg/L gibberellin solution for 1h, then soaking in 160mg/L indoleacetic acid solution for 0.75h, and finally soaking in 35 mg/L6-benzyladenine solution for 0.75h for accelerating germination;
(3) Land preparation: flattening the seedbed to ensure smooth drainage and remove weeds;
(4) Matrix configuration: the culture medium is a mixture of sea mud and sea sand, and the volume ratio of the sea mud to the sea sand is 2;
(5) Planting: planting the fruit after germination acceleration in a nutrition bag filled with a culture medium, wherein in the planting process, 55% of the thickness of the fruit is pressed into the culture medium, and the spray irrigation process comprises the following steps: planting in the morning and evening at 1 week, and sprinkling for 1 hr; sprinkling for 1 time every morning for 2-3 weeks for 1 hour; 4-6 weeks, 1 time of sprinkling irrigation every week, 1.5 hours of sprinkling irrigation every time; then in winter-spring of next year, sprinkling for 2 times per month, and sprinkling for 1 hour each time; after each spray irrigation, the average water content of the surface soil of the culture substrate with the depth of 1.5cm is 30 percent;
(6) Transplanting seedlings: and (4) transplanting the silver leaf trees into the non-woven fabric bags filled with the culture medium in the step (4) when the height of the seedlings is 25cm, and taking the seedlings out of the nursery when the height of the seedlings is 50 cm.
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| CN202110168445.0A CN112997787B (en) | 2021-02-07 | 2021-02-07 | Rapid seedling raising method for half-mangrove plant silver leaf tree |
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| CN202110168445.0A CN112997787B (en) | 2021-02-07 | 2021-02-07 | Rapid seedling raising method for half-mangrove plant silver leaf tree |
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