CN113575590A - Cultivation method for promoting gingko to bloom and bear fruits - Google Patents
Cultivation method for promoting gingko to bloom and bear fruits Download PDFInfo
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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- A01N43/00—Biocides, pest repellants or attractants, or plant growth regulators containing heterocyclic compounds
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Abstract
The invention discloses a cultivation method for promoting gingko to bloom and bear fruits, which comprises the following steps: (1) selecting male and female gingkoes which bloom and fruit in vigorous period as a cutting stock tree, cutting branches with strong growth bonds and plump buds as scions for grafting, and transplanting in the second year after survival; (2) fertilizing 1-5 times per year after the male and female ginkgo plants are planted in a matched manner; (3) after the plants are planted and survive, a male flower promoting agent and a female flower promoting agent are alternately sprayed on male ginkgo plants until the male ginkgo plants bloom; (4) carving gingko with diameter up to 8-12 cm, carving below the base of the short branch in summer, and carving above the short branch in winter; (5) girdling is carried out on the smooth base parts of the main branches or the lateral branches of the gingkoes from the late ten days of 5 months to the middle ten days of 6 months. The method of the invention leads the ginkgo to enter reproductive growth in advance for flower bud differentiation by chemical regulation and control, improves nutrient distribution in the tree body by matching with physical methods of incised wound and girdling, accelerates flower bud differentiation and enters the flowering and fruiting period in advance.
Description
Technical Field
The invention belongs to the technical field of plant cultivation, and particularly relates to a cultivation method for promoting gingko to bloom and bear fruits.
Background
Ginkgo biloba is the oldest gymnosperm left after the movement of the fourth glacier and also the oldest gymnosperm in the seed plants in the existing world, and is called as the activating stone in the plant kingdom. Gingko is slow in growth and extremely long in service life, and under natural conditions, a large number of gingkoes can be obtained after forty years from planting to fruiting, so that the gingko is called a "Gongsun tree" and has the meaning of being eaten by the male species and the sun, and is a longevity star in the tree, which is called gingko in ancient times. The gingko is 'treasure' throughout the body, the seeds can be eaten and used as medicines, and meanwhile, the gingko tree has higher economic, ecological and social benefits in various aspects such as garden appreciation, chemical engineering and the like.
With the development of the ecological, economic, ornamental in garden, medicinal, chemical and other multipurpose values of ginkgo by people, the enthusiasm of artificial planting of ginkgo is high, and as the natural reproduction age of ginkgo is generally twenty years, people usually adopt the traditional and conventional cultivation methods, heavy planting and light maintenance management are performed, and the ginkgo becomes a small and old tree after several years, does not bloom for a long time and self-goes out, so that the waste of manpower, material resources and land resources is caused. Therefore, if the cultivation measures are improved, the smooth flower bud differentiation of the ginkgo can be promoted, and the yield and the planting benefit of the ginkgo can be improved, the method has very important significance.
Patent CN200610134818.8 discloses a method for promoting the flowering of male ginkgo tree in advance, which is characterized in that annual terminal buds at the tops of main branches of the male ginkgo tree are removed in summer every year, so that axillary buds at the stems can be promoted to germinate, the flower bud differentiation is intensified along with the accumulation of nutrients, the male ginkgo tree can flower in advance, the method has large workload, and the fruit setting rate is not obviously improved.
Disclosure of Invention
The invention aims to provide a cultivation method for promoting gingko to bloom and bear fruits, which improves nutrient substance distribution in a tree body, shortens the vegetative growth period of the gingko and promotes blooming and bearing fruits.
In order to realize the purpose of the invention, the following technical scheme is adopted:
provides a flower promoting agent for promoting the flowering and fruiting of ginkgo, which comprises a male flower promoting agent and a female flower promoting agent;
the male flower promoting agent comprises 100-300 mg/L of adenine, 400-650 mg/L of phosphate, 5-20 mg/L of boric acid and 1-10 mg/L of vitamin in terms of per liter of solution;
the female flower promoter comprises, by per liter of solution, 40-70 mg/L of diethyl aminoethyl hexanoate, 400-700 mg/L of indole ester, 0.5-4 mg/L of zinc sulfate, 0.2-2 mg/L of boric acid and 1-20 mg/L of vitamin.
The hydroxyl adenine is a cytokinin growth promoter, can promote plant photosynthesis and protein synthesis, has stronger physiological action on flower bud differentiation, and has obvious effect on promoting the transition of the vegetative growth to reproductive growth of the ginkgo when being compounded with monopotassium phosphate, boric acid and vitamin E.
The invention carries out chemical regulation and control on the gingko through the flower promoting agent, shortens the vegetative growth period of the gingko, and leads the gingko to enter reproductive growth in advance for flower bud differentiation.
Furthermore, the male flower promoting agent comprises 150-250 mg/L of adenine, 450-550 mg/L of phosphate, 10-20 mg/L of boric acid and 5-10 mg/L of vitamin in terms of per liter of solution;
the female flower promoter comprises 50-60 mg/L diethyl aminoethyl hexanoate, 500-600 mg/L diethyl aminoethyl hexanoate, 1-2 mg/L zinc sulfate, 1-2 mg/L boric acid and 2-10 mg/L vitamin in terms of per liter of solution.
Furthermore, the adenine is selected from one or more of hydroxyl adenine, isopentene adenine, 6-furfuryl amino adenine and 6-benzyl amino adenine, and is preferably hydroxyl adenine.
Further, the phosphate is selected from one or more of potassium dihydrogen phosphate, dipotassium hydrogen phosphate, sodium hydrogen phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate and potassium phosphate, and is preferably potassium dihydrogen phosphate.
Further, in the male flower promoting agent, the vitamin is one or more selected from vitamin A, vitamin B1, vitamin B2, vitamin B4, vitamin B5, vitamin B6, vitamin B9, vitamin E and vitamin C, preferably vitamin C.
Further, in the female flower promoting agent, the vitamin is selected from one or more of vitamin A, vitamin B1, vitamin B2, vitamin B4, vitamin B5, vitamin B6, vitamin B9, vitamin E and vitamin C, and is preferably a composition consisting of vitamin E and vitamin B9;
further, the vitamin E is 1-7 mg/L, and further 2-5 mg/L in terms of each liter of solution;
the vitamin B9 is 1-5 mg/L, and further 2-3 mg/L.
Vitamin E is an antioxidant and a nutritional supplement, and can promote differentiation and formation of male organs of plants, promote flowering of flowering plants to prolong flowering phase, and improve fertility.
Vitamin B9, also called folic acid, is a growth inhibitor, is absorbed by leaves and stems and transmitted into plants to inhibit the growth of young shoots, shortens internode length and has obvious promotion effect on flower formation.
The compound ginkgo leaf fertilizer is compounded by adopting several components of diethyl aminoethyl hexanoate, diethyl indole ester, zinc sulfate, boric acid, vitamin E and vitamin B9 with certain concentrations, and has the advantages of shortening the vegetative growth period of the ginkgo and promoting the development of female flowers, thereby improving the fruiting rate.
The invention also provides a cultivation method for promoting gingko to bloom and bear fruits, which comprises the following steps:
(1) selecting male and female gingkoes which bloom and fruit in vigorous period as a cutting stock tree, cutting branches with strong growth bonds and plump buds as scions, soaking the scions in nutrient solution, grafting, and transplanting in the second year after survival;
(2) fertilizing 1-5 times per year after the male and female ginkgo plants are planted in a matched manner;
(3) after planting and surviving, alternately spraying the male flower promoting agent and the female flower promoting agent of any one of claims 1-7 on male ginkgo plants until blooming;
(4) cutting the gingko with the diameter of 8-12 cm, cutting the gingko below the base of the short branches in summer, and cutting the gingko above the short branches in winter;
(5) girdling is carried out on the smooth base parts of the main branches or the lateral branches of the gingkoes from the late ten days of 5 months to the middle ten days of 6 months.
The girdling can lead the nutrient made by the upper branches and leaves to be accumulated to the short branches and quickly form flower buds; after the ginkgo seedlings are planted, the ginkgo seedlings can bloom in 15-20 years under natural conditions, and the flowering promoting agent is matched with physical methods of incised wound and girdling, so that the nutrient distribution in a tree body is improved, the flower bud differentiation is accelerated, the vegetative growth time of the ginkgo is shortened to about 5 years, and the flowering and fruiting period is advanced.
Further, in the (2), the method for applying fertilizer comprises: and applying the ternary compound fertilizer at 3-4 months, wherein 0.2-0.8 kg of the ternary compound fertilizer is applied to each plant, 1-7 kg of the decomposed organic fertilizer is applied to each plant at 10-11 months, and the diameter of the ginkgo can be increased by 2.0-2.5 cm each year by adopting the management and maintenance after cultivation.
Further, in the step (3), the spraying frequency is 1-2 times per month until the flower blooms.
The invention has the following beneficial effects:
the method combines the conventional cultivation and maintenance of the ginkgo with chemical regulation and physical promotion methods, in the conventional cultivation, inorganic fertilizer and organic fertilizer are combined for application to promote the nutritional growth of the ginkgo, substances such as different plant growth regulators, vitamins and the like are utilized to regulate the physiological metabolic process of the ginkgo, so that the nutritional growth time of the ginkgo is shortened to about 5 years, the ginkgo enters the reproductive period in advance, nutrients in a tree body are accumulated on branches by matching with a physical cutting method, the flower bud differentiation is promoted, and the fruit setting rate is improved.
Detailed Description
The technical solutions of the present invention will be described clearly and completely below, and it should be understood that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used in the description of the invention herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.
Example 1
1. Seeding and cultivating strong seedlings
The seedbed land requires flat land, loose and fertile soil and convenient irrigation and drainage. Selecting large and full seeds, sowing the seeds in single seeds at intervals of 10 multiplied by 12cm in the first ten days of 1 month, enhancing daily management after seedling emergence, spraying carbendazim and insecticide once per month from 4 months, preventing diseases and insects, loosening soil and weeding, fertilizing for 4-8 months mainly by applying fertilizer outside roots (urea, monopotassium phosphate, diethyl aminoethyl hexanoate, indolebutyric acid and zeatin), applying organic fertilizer once in 10 months (rotten stable manure and calcium magnesium phosphate fertilizer), covering soil and watering after application, and putting fallen leaves into dormancy for 12 months.
2. Grafting
(1) Selecting and treating rootstock: and selecting the seedling with the diameter of 1.0-2.0 cm thick and the height of 60-80 cm as the grafting stock before the sap does not flow in the body and the bud does not germinate in the last ten days of the next year from the last ten days to the middle ten days of the last month.
(2) Selecting scions; selecting male and female gingkoes which bloom and fruit in vigorous period as a cutting mother tree, and cutting branches with strong growth bonds and plump buds as scions.
(3) Scion cutting: firstly, cutting two sides of a position 0.5cm below a scion bottom bud once, wherein the cut surfaces are box-shaped, thick at the top and thin at the bottom, 3-4 cm long, thick at one side with buds and thin at one side without buds, the cut surfaces are smooth and smooth, and in order to ensure that the phenomenon of splitting does not occur during heavy insertion, the thicker surface at the lower end of the cut is obliquely cut inwards once at a position 0.2cm, the thinner surface is also obliquely cut inwards once at a position 0.5cm, the intersection of the two cutters is in a sheet shape, if the scion is thinner, the cutting method can be changed, namely, the lower cutter is lighter and gradually heavier when the two inclined surfaces are cut, the thick branch 1/3-1/2 is still kept when the bottom end is reached, and finally, the lower part of each cut surface is cut once again at a position 0.5cm, so that the top of the scion is pointed, the woody part is kept as much as possible, and the survival rate is improved.
(4) Cutting the rootstock: and cutting off the stock at a position 20-30 cm away from the ground, flattening the cut, and vertically and deeply cutting the smooth surface of the bark of the stock downwards along with the stock by a cut, wherein the length of the cut is longer than that of the scion.
(5) And (3) grafting scion: before insertion, the scion is quickly dipped in nutrient solution for 5-10 seconds, the stock is tightly held by the left hand, the scion is leaned on the cut by the thumb, the scion is held by the right hand, the thicker side (the side with buds) is outward, the thinner side is inward, and the scion is slowly inserted into the cut of the stock, the thumb is required to be communicated with the scion to gradually slide downwards, so that the scion gradually slides downwards, the cambium of the scion and the cambium of the stock are tightly matched, the healing is accelerated, and the cut surface of the scion is left 0.3 cm long and is exposed outside the stock;
the nutrient solution formula comprises: 0.1mg/L of cytokinin, 0.01mg/L of isopropenyl basic 5-chlorobenzimidazolone and 0.005mg/L of vitamin C.
(6) The cut of the stock is bound, a thin film plastic band with the same width is wound on the connector for two weeks, the opening is bound tightly, then the upper opening is closed, the cut opening is completely closed and then the cut opening is bound downwards until the cut opening is exceeded, so that the bleeding wound is prevented from overflowing, the lower end of the scion is soaked in bleeding liquid, and the scion survival is facilitated.
3. Planting and maintaining
(1) Soil preparation and transplantation
Transplanting in the second year after grafting survival, selecting fertile loose land and convenient irrigation and drainage plots, applying 2500-3000 kg of decomposed manure per mu, turning over the land and mixing with the native soil uniformly, wherein the plant row spacing is 1.5 m/2.0 m, and the plant spacing of male and female plants is 10: 1 proportion of the plants.
(2) Cultivating after planting
Strengthen daily management, weed and loosen the soil, prevent diseases and pests. The fertilizer is applied twice every year, 3-4 months are needed once, 0.25-0.5 kg of ternary compound fertilizer is applied to each plant, 2-5 kg of decomposed organic fertilizer is applied in 10-11 months, and the gingko can grow and thicken 2.0-2.5 cm every year.
4. Chemical regulation to advance reproductive growth
(1) Male floral promoter preference test
The formula A is as follows: 200mg/L of indolebutyric acid, 500mg/L of dipotassium phosphate, 10mg/L of boric acid and 5mg/L of vitamin E.
And the formula B is as follows: 200mg/L of indolebutyric acid, 500mg/L of monopotassium phosphate, 10mg/L of sodium molybdate and 5mg/L of vitamin C.
And a formula C: 200mg/L of hydroxyalkenadenine, 500mg/L of monopotassium phosphate, 10mg/L of sodium molybdate and 5mg/L of vitamin C.
And (3) formula D: 200mg/L of hydroxyalkenadenine, 500mg/L of monopotassium phosphate, 10mg/L of boric acid and 5mg/L of vitamin E.
The male flower promoter is preferably selected from the four formulas in a test mode, 20 ginkgo biloba leaves are selected in each formula, and the male flower promoter is sprayed for 1-2 times per month from 4 months to 8 months in the third year of transplanting survival till blooming within the annual growth season, and the results are shown in table 1.
TABLE 1 Male flower growth promoter preference test results statistics
The test results in table 1 show that the four formulas have different degrees of promotion effects on early flowering of ginkgo, wherein the formula B has the worst effect, the formula D has the best effect, and the promotion effect is poor when the formula C replaces boric acid and vitamin E in the formula D with sodium molybdate and vitamin C with the same concentration; when formula D replaces indolebutyric acid in formula A with the same concentration of the hydroxyolefine adenine, the promoting effect is obviously improved.
The indolebutyric acid and the hydroxyolefine adenine have the effect of promoting the growth of plants, wherein the effect of promoting the reproductive growth of the plants is poor when the indolebutyric acid is compounded with potassium dihydrogen phosphate, sodium molybdate and vitamin C, and the effect of promoting the transformation of the vegetative growth of the ginkgo into the reproductive growth of the ginkgo is obvious when the hydroxyolefine adenine is compounded with the potassium dihydrogen phosphate, the boric acid and the vitamin E.
(2) Female florigen preference test
The formula I is as follows: diethyl aminoethyl hexanoate 20mg/L, diethyl aminoethyl hexanoate 500mg/L, zinc sulfate 2.0mg/L, boric acid 1.0mg/L, and vitamin E3.0 mg/L;
and a second formula: 20mg/L diethyl aminoethyl hexanoate, 500mg/L diethyl aminoethyl hexanoate, 2.0mg/L zinc sulfate, 1.0mg/L boric acid and 92.5mg/L vitamin B;
and the formula III: diethyl aminoethyl hexanoate 50mg/L, diethyl aminoethyl hexanoate 500mg/L, zinc sulfate 2.0mg/L, boric acid 1.0mg/L, vitamin E3.0 mg/L, vitamin B92.5mg/L;
the formula four: diethyl aminoethyl hexanoate 50mg/L, diethyl aminoethyl hexanoate 500mg/L, zinc sulfate 2.05mg/L and vitamin B92.5mg/L.
The female flower promoter is preferably selected from the four formulas in a test mode, 20 ginkgo biloba leaves are selected in each formula, and the female flower promoter is sprayed for 1-2 times per month from 4 months to 8 months in the third year of transplanting survival till blooming, and is continuously carried out for five years.
TABLE 2 female flower growth promoter preference test results statistics
The experimental observation results show that the four formulas promote the gingko vegetative growth to reproductive growth to different degrees, the branch growth gradually shows internode shortening, dense leaves and large lateral buds, the phenomenon of little flowering and fruiting occurs after the fourth year of pesticide spraying, the flowers and fruits are obviously increased in the fifth year, the effect of the third formula is the best, and the best effect of the fourth formula is the poor.
5. Accelerated flower bud differentiation by nicking and girdling
(1) Cutting, namely cutting off the ginkgo biloba, which has the diameter of about 8-12 cm and does not flower all the time, by crosscutting a knife under the base of the short branch in summer in combination with a spraying flower promoting agent after planting for 5-6 years, and cutting off the phloem to reach the xylem so as to prevent upper nutrients from being transported downwards, so that the nutrients are accumulated on the short branch and the formation of flower buds is promoted; in winter, the upper part of the short branch is carved to prevent the nutrients at the lower part from being conveyed upwards, so that the nutrients are accumulated at the short branch to promote the flower bud differentiation.
(2) And (3) girdling, namely stripping a half circle of cortex with the width of 1-1.5 cm from the smooth part of the base part of the main branch or the lateral branch by using sharp edges in a dislocation manner from the late 5 th ten days to the early 6 th day, tightly wrapping the stripped main branch or the lateral branch by using a plastic film, preventing a wound from being infected by diseases and insects, promoting the wound to heal quickly, girdling in the first year, and generating flower buds and blooming in the second year.
Comparative example 1
Two formulas of male flower promoting agents C, D are selected through experiments, female flower promoting agents are selected according to the formula I and the formula III, fruit mulberry is used as a contrast, the fruit mulberry and gingko are also woody plants, male and female heteroplants, the male plants can not blossom and bear fruits, the female plants can bear fruits, the gingko selects 20 male and female plants which are sprayed for four years, the fruit mulberry selects 20 male and female plants which just enter the flowering and fruiting year, a comparison experiment is carried out according to the same method and times, the application effects of the two flower promoting agents on different fruit trees are observed, and the experiment results are shown in the table 3.
TABLE 3 statistics of comparative test results
The result of the comparative test shows; the two female and male flower growth promoting agents can promote the gingko and the mulberry to blossom and fruit, but the flowering, fruit bearing and fruit bearing rate of male and female gingko plants are higher than that of the mulberry, and the fruit bearing rate is also higher than 32-34.2%.
Comparative example 2
Two formulas of poor male flower promoting agent A, C, female flower promoting agent formulas two and four, are screened out by using a test, female and male mulberry plants which just enter the flowering and fruiting year are used as a control, the ginkgo selects the female and male mulberry plants which are sprayed with the pesticide for four years, 20 plants are selected, the mulberry plants are 20 plants, and a comparison test is carried out according to the same method and times, wherein the test results are shown in a table 4.
TABLE 4 statistics of comparative test results
20 cucumbers planted in the current year and 20 gingko seeds sprayed with a flower promoting agent for four years are selected, and 100-500 mg/L female flower promoting agent ethephon and/or 100mg/L potassium dichromate, 20-50 mg/L male flower promoting agent diethyl aminoethyl hexanoate and/or 100-200 mg/L indate are sprayed on the cucumbers and the gingko seeds. Comparative tests were carried out and the test results are given in table 5.
TABLE 5 results of comparative experiments on the flower-promoting effects of ethephon and diethyl aminoethyl hexanoate
As can be seen from table 5, ethephon and/or potassium dichromate in the conventional components has an effect of promoting cucumber flowering, but due to the fact that ginkgo and cucumber plants have different physiological characteristics, the application of ethephon and/or potassium dichromate has no effect of promoting ginkgo flowering, and after the female flower promoter and the formula are matched for use, all ginkgo test plants flower, and the fruit setting rate reaches 98.6%, for different plants in the family, the physiological and morphological characteristics of the plants have certain differences, nutrient substances required in the growth process are different, and for the same growth regulator for promoting plant flowering and fruit setting, the growth regulator has different effects on different plants and cannot be used in a mixed manner.
In conclusion, the flowering and fruit setting rate of the ginkgo can be obviously improved only by adopting the formula, the ginkgo can bloom after the ginkgo seedlings are planted in the natural condition for 15-20 years, the distribution of nutrient substances in the tree body can be improved by adopting the method, the differentiation of flower buds is accelerated, the vegetative growth time of the ginkgo is shortened to about 5 years, and the flowering and fruit setting period is advanced. Compared with other plants such as mulberry and cucumber, the female flower promoter and the male flower promoter have the best effect of promoting gingko to bloom and bear fruits.
The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention, and various modifications and changes may be made by those skilled in the art. Any modification, equivalent replacement, or improvement made within the spirit and principle of the present invention should be included in the protection scope of the present invention.
Claims (10)
1. A flower promoting agent for promoting gingko flowering and fruiting is characterized by comprising a male flower promoting agent and a female flower promoting agent;
the male flower promoting agent comprises 100-300 mg/L of adenine, 400-650 mg/L of phosphate, 5-20 mg/L of boric acid and 1-10 mg/L of vitamin in terms of per liter of solution;
the female flower promoter comprises, by per liter of solution, 40-70 mg/L of diethyl aminoethyl hexanoate, 400-700 mg/L of indole ester, 0.5-4 mg/L of zinc sulfate, 0.2-2 mg/L of boric acid and 1-20 mg/L of vitamin.
2. The flower promoting agent according to claim 1, wherein the male flower promoting agent comprises, per liter of solution, 150-250 mg/L of adenine, 450-550 mg/L of phosphate, 10-20 mg/L of boric acid, and 5-10 mg/L of vitamin;
the female flower promoter comprises 50-60 mg/L diethyl aminoethyl hexanoate, 500-600 mg/L diethyl aminoethyl hexanoate, 1-2 mg/L zinc sulfate, 1-2 mg/L boric acid and 2-10 mg/L vitamin in terms of per liter of solution.
3. The flower promoter according to claim 1, wherein the adenine is selected from one or more of hydroxyalkenyladenine, isopentenyladenine, 6-furfuryladenine, and 6-benzylaminoadenine, preferably hydroxyalkenyladenine.
4. The flower promoting agent of claim 1, wherein the phosphate is selected from one or more of potassium dihydrogen phosphate, dipotassium hydrogen phosphate, sodium hydrogen phosphate, disodium hydrogen phosphate, sodium dihydrogen phosphate and potassium phosphate, and is preferably potassium dihydrogen phosphate.
5. The flower promoting agent according to claim 1, wherein the vitamin in the male flower promoting agent is one or more selected from vitamin A, vitamin B1, vitamin B2, vitamin B4, vitamin B5, vitamin B6, vitamin B9, vitamin E and vitamin C, preferably vitamin C.
6. The flower promoting agent according to claim 1, wherein the vitamin in the female flower promoting agent is selected from one or more of vitamin A, vitamin B1, vitamin B2, vitamin B4, vitamin B5, vitamin B6, vitamin B9, vitamin E and vitamin C, and preferably the composition is composed of vitamin E and vitamin B9.
7. The flower promoting agent according to claim 6, wherein the vitamin E is 1 to 7mg/L, further 2 to 5mg/L per liter of solution;
the vitamin B9 is 1-5 mg/L, and further 2-3 mg/L.
8. A cultivation method for promoting gingko to bloom and bear fruits is characterized by comprising the following steps:
(1) selecting male and female gingkoes which bloom and fruit in vigorous period as a cutting stock tree, cutting branches with strong growth bonds and plump buds as scions, soaking the scions in nutrient solution, grafting, and transplanting in the second year after survival;
(2) fertilizing 1-5 times per year after the male and female ginkgo plants are planted in a matched manner;
(3) after planting and surviving, alternately spraying the male flower promoting agent and the female flower promoting agent of any one of claims 1-7 on male ginkgo plants until blooming;
(4) cutting the gingko with the diameter of 8-12 cm, cutting the gingko below the base of the short branches in summer, and cutting the gingko above the short branches in winter;
(5) girdling is carried out on the smooth base parts of the main branches or the lateral branches of the gingkoes from the late ten days of 5 months to the middle ten days of 6 months.
9. The cultivation method as claimed in claim 8, wherein in (2), the method of applying fertilizer comprises: and applying a ternary compound fertilizer for 3-4 months, wherein each plant is 0.2-0.8 kg, and applying 1-7 kg of decomposed organic fertilizer for 10-11 months.
10. The cultivation method according to claim 8, wherein the spraying is performed 1 to 2 times per month in the step (3) until flowering.
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| CN115088547A (en) * | 2022-07-08 | 2022-09-23 | 烟台大为苗木有限公司 | High-yield cultivation method for vigorous stock apple trees |
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