CN114080948A - Method for dwarfing and flower promoting of eucalyptus urophylla - Google Patents
Method for dwarfing and flower promoting of eucalyptus urophylla Download PDFInfo
- Publication number
- CN114080948A CN114080948A CN202111361841.1A CN202111361841A CN114080948A CN 114080948 A CN114080948 A CN 114080948A CN 202111361841 A CN202111361841 A CN 202111361841A CN 114080948 A CN114080948 A CN 114080948A
- Authority
- CN
- China
- Prior art keywords
- application
- paclobutrazol
- eucalyptus urophylla
- months
- root
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
Classifications
-
- 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
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01C—PLANTING; SOWING; FERTILISING
- A01C21/00—Methods of fertilising, sowing or planting
- A01C21/005—Following a specific plan, e.g. pattern
-
- 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
- A01G7/00—Botany in general
- A01G7/06—Treatment of growing trees or plants, e.g. for preventing decay of wood, for tingeing flowers or wood, for prolonging the life of plants
Abstract
The invention relates to the technical field of eucalyptus urophylla cultivation, in particular to a method for dwarfing and flower promoting of eucalyptus urophylla. The method comprises the following steps: administering paclobutrazol to eucalyptus urophylla; the total application amount of the paclobutrazol is 0.67 g/cm-2.7 g/cm per 12 months by the ground diameter of the eucalyptus urophylla; the location of application includes on the roots and/or blades. According to the invention, a proper amount of paclobutrazol is applied to the root of the eucalyptus urophylla, so that dwarfing of the eucalyptus urophylla is realized, flowering of the eucalyptus urophylla is promoted, and the fruiting rate is improved. According to the embodiment, compared with an untreated group, the method provided by the invention has the advantages that the increment of the tree height is reduced by 41.9-97.5%, and the length of a new branch is reduced by 70.9-78.2%; the number of the flowering branches is 5.5-38, and the number of the untreated groups is only 1; according to the method, the number of the buds is 200-300, and no buds grow in an untreated group.
Description
Technical Field
The invention relates to the technical field of eucalyptus urophylla cultivation, in particular to a method for dwarfing and flower promoting of eucalyptus urophylla.
Background
The eucalyptus plant belongs to the eucalyptus family of the myrtaceae, is one of afforestation tree species (poplar, eucalyptus and pine) in the world, has the advantages of strong adaptability, short cultivation period, wide application, high economic value and the like, and is one of important strategic tree species in the south of China. The eucalyptus urophylla has the characteristics of high growth speed, straight dry shape and the like, and becomes an important afforestation tree species and a preferable tree species of a hybrid parent in China. However, the characteristics of the tall and big trunk of the eucalyptus urophylla greatly limit the work of pollen collection, artificial control pollination, fruit collection and the like, and greatly obstruct the work of genetic improvement of the eucalyptus urophylla.
At present, dwarfing of eucalyptus urophylla parents is realized to a certain extent by technologies such as pruning, water control and fertilizer control. However, the small number of flowering branches and buds in the eucalyptus urophylla breeding garden is an important limiting factor for limiting the genetic improvement of the eucalyptus urophylla. Therefore, the study on the dwarfing and flower-promoting technology of the eucalyptus urophylla parent has important significance for breeding a new eucalyptus line with fast growth, high quality and strong stress resistance.
Disclosure of Invention
In order to solve the problems, the invention provides a method for dwarfing and flower promoting eucalyptus urophylla. The method provided by the invention not only realizes the dwarfing of the eucalyptus urophylla, but also improves the quantity of flowering branches and buds of the eucalyptus urophylla.
In order to achieve the above purpose, the invention provides the following technical scheme:
the invention provides a dwarfing and flower-promoting method for eucalyptus urophylla, which comprises the following steps:
administering paclobutrazol to eucalyptus urophylla; the total application amount of the paclobutrazol is 0.67 g/cm-2.7 g/cm per 12 months by the ground diameter of the eucalyptus urophylla; the location of application includes on the roots and/or blades.
Preferably, the initial application time of paclobutrazol is 11 months.
Preferably, the application frequency is 1-4 times/12 months.
Preferably, the method of administering paclobutrazol comprises: the site of application is the root; the application time is 11 months, and the application times are 1 time/12 months; the application amount of the paclobutrazol is 0.67g/cm in each application based on the ground diameter of the eucalyptus urophylla.
Preferably, the method of administering paclobutrazol comprises: the application positions are roots and leaves; the initial application time for both root and leaf application was 11 months; the application frequency of the roots and the leaves is once every 3 months; the application amount of the paclobutrazol to the root of the eucalyptus urophylla is 0.335g/cm for each time and the application amount of the paclobutrazol to the eucalyptus urophylla is 0.1675g/cm for each time according to the ground diameter of the eucalyptus urophylla.
Preferably, the method of administering paclobutrazol comprises: the application positions are roots and leaves; the initial application time for both root and leaf application was 11 months; the application frequency of the roots and the leaves is once every 4 months; the application amount of the paclobutrazol on the root and the leaf of the eucalyptus urophylla is 0.335g/cm per time according to the ground diameter of the eucalyptus urophylla.
Preferably, the method further comprises: applying a compound fertilizer; the method specifically comprises the following steps: the application position of the paclobutrazol is the root, and the initial application time of the paclobutrazol and the compound fertilizer is 11 months; the application frequency of the paclobutrazol and the compound fertilizer is once every 3 months; according to the land diameter of the eucalyptus urophylla, the application amount of the paclobutrazol at the root of the eucalyptus urophylla is 0.67g/cm each time, and the application amount of the compound fertilizer is 8.33g/cm each time; the mass ratio of nitrogen, phosphorus and potassium elements of the compound fertilizer is 15:15: 15.
Preferably, the method further comprises pruning the eucalyptus urophylla before applying the paclobutrazol; pruning the eucalyptus urophylla into: the eucalyptus urophylla seedlings have 3-5 main branches, the height of the seedlings is 106.69 +/-8.33 cm, the crown breadth is 135.41 +/-11.61 cm, and the ground diameter is 31.4 +/-3.12 mm.
Preferably, the dwarfing and flower promoting comprises one or more of reducing plant height, reducing new branch length, increasing the number of flowering branches and the number of flower buds.
Preferably, the paclobutrazol is applied to the root of the eucalyptus urophylla at a position 13-17 cm away from the root.
Has the advantages that:
the invention provides a dwarfing and flower-promoting method for eucalyptus urophylla, which comprises the following steps: administering paclobutrazol to eucalyptus urophylla; the total application amount of the paclobutrazol is 0.67 g/cm-2.7 g/cm per 12 months by the ground diameter of the eucalyptus urophylla; the location of application includes on the roots and/or blades. According to the invention, a proper amount of paclobutrazol is applied to the root of the eucalyptus urophylla, so that dwarfing of the eucalyptus urophylla is realized, flowering of the eucalyptus urophylla is promoted, and the fruiting rate is improved. According to the embodiment, compared with an untreated group, the method provided by the invention has the advantages that the increment of the tree height is reduced by 41.9-97.5%, and the length of a new branch is reduced by 70.9-78.2%; the number of the flowering branches is 5.5-38, and the number of the untreated groups is only 1; according to the method, the number of the buds is 200-300, and no buds grow in an untreated group.
Detailed Description
The invention provides a dwarfing and flower-promoting method for eucalyptus urophylla, which comprises the following steps:
administering paclobutrazol to eucalyptus urophylla; the total application amount of the paclobutrazol is 0.67 g/cm-2.7 g/cm per 12 months by the ground diameter of the eucalyptus urophylla; the location of application includes on the roots and/or blades. In the present invention, the dwarfing and flower promotion preferably includes one or more of reduction of plant height, reduction of new branch length, increase of flowering branch number and flower bud number. The ground diameter of the eucalyptus urophylla in the invention and the embodiment is preferably the diameter of the part of the eucalyptus urophylla above the ground, which is 5cm from the ground in vertical height.
In the present invention, before applying the paclobutrazol, it is preferable to further include a trimming treatment of eucalyptus urophylla; the post-pruning trait preferably includes: the eucalyptus urophylla seedlings have 3-5 main branches, the height of the seedlings is 106.69 +/-8.33 cm, the crown breadth is 135.41 +/-11.61 cm, and the ground diameter is 31.4 +/-3.12 mm. The invention can control the quantity of fruit branches and the tree height through proper pruning treatment, realizes dwarfing and is convenient for pollination and fruit picking.
In the present invention, the initial application time of paclobutrazol is preferably 11 months, more preferably 11 months and 11 days to 11 months and 14 days; the frequency of application is preferably 1-4 times/12 months, and further preferably 1 time/12 months, 2 times/12 months, 3 times/12 months or 4 times/12 months.
In the invention, when the paclobutrazol is applied to the root of the eucalyptus urophylla, the position of the paclobutrazol is in the soil at a distance of 13-17 cm from the root, and more preferably in the soil at a distance of 15cm from the root; the mode of application of the paclobutrazol to the root of eucalyptus urophylla preferably includes direct application. In the present invention and embodiments, the application of paclobutrazol to eucalyptus urophylla leaves preferably comprises spraying; the preparation method of the paclobutrazol solution for each spraying preferably comprises: mixing paclobutrazol and acetone, adding water to a constant volume of 1000 ppm; the mass-volume ratio of the paclobutrazol to the acetone is preferably 1g:50 mL.
The source of the paclobutrazol is not particularly required in the present invention, and commercially available products well known to those skilled in the art may be used. According to the invention, the proper amount of paclobutrazol is applied in a proper time before the flowering phase of the eucalyptus urophylla, so that the high flowering branch number and the flower bud number of the eucalyptus urophylla can be effectively increased, and the dwarfing of the eucalyptus urophylla is realized.
The invention can have various specific schemes for applying paclobutrazol, can realize the improvement of the high flowering branch quantity and the bud quantity of the eucalyptus urophylla and simultaneously realizes the dwarfing of the eucalyptus urophylla.
In the present invention, the method for applying paclobutrazol preferably includes: the site of application is the root; the application time is 11 months, and the application times are 1 time/12 months; the application amount of the paclobutrazol is 0.67g/cm in each application based on the ground diameter of the eucalyptus urophylla. The method can improve the flowering branch number and the flower bud number of the eucalyptus urophylla to the maximum extent by applying the paclobutrazol once every 11 months (more preferably 11-14 days every 11 months), has the minimum workload, and can solve the problem by later-stage pruning although the mode increases part of the tree height.
Alternatively, the method of administering paclobutrazol preferably comprises: the application positions are roots and leaves; the initial application time for both root and leaf application was 11 months; the application frequency of the roots and the leaves is once every 3 months, and the roots and the leaves can be applied on the same day or 1-3 days apart when the roots and the leaves are applied every time. In the invention, the application amount of the paclobutrazol to the root of the eucalyptus urophylla is 0.335g/cm each time and the application amount of the paclobutrazol to the leaves of the eucalyptus urophylla is 0.1675g/cm each time based on the ground diameter of the eucalyptus urophylla. According to the invention, the application of paclobutrazol (root application and leaf application) is started every 3 months at 11 months every year (more preferably 11-14 days every year), so that the flowering branch number and the flower bud number of the eucalyptus urophylla can be increased, the tree height increment is effectively reduced, and the dwarfing of the eucalyptus urophylla is effectively realized.
Alternatively, the method of administering paclobutrazol preferably comprises: the application positions are roots and leaves; the initial application time for both root and leaf application was 11 months; the application frequency of the roots and the leaves is applied once every 4 months, and the roots and the leaves can be applied on the same day or 1-3 days apart when the roots and the leaves are applied each time; the application amount of the paclobutrazol on the root and the leaf of the eucalyptus urophylla is 0.335g/cm per time according to the ground diameter of the eucalyptus urophylla. According to the invention, the method of applying paclobutrazol once every 4 months (root application and leaf application) is started at 11 months per year (more preferably 11-14 days per year), so that the flowering branch number and the flower bud number of the eucalyptus urophylla can be effectively increased, the tree height increment is reduced, and the dwarfing of the eucalyptus urophylla is effectively realized.
Alternatively, the method for dwarfing and flower promoting of eucalyptus urophylla preferably further comprises the following steps: applying a compound fertilizer; the method specifically comprises the following steps: the application position of the paclobutrazol is the root, and the initial application time of the paclobutrazol and the compound fertilizer is 11 months; the application frequency of the paclobutrazol and the compound fertilizer is applied once every 3 months, and the paclobutrazol and the compound fertilizer can be applied on the same day or 1-3 days apart when applied every time; according to the land diameter of the eucalyptus urophylla, the application amount of the paclobutrazol to the root of the eucalyptus urophylla is 0.67g/cm each time, and the application amount of the compound fertilizer is 8.33g/cm each time; the mass ratio of nitrogen, phosphorus and potassium elements of the compound fertilizer in the invention and the embodiment is 15:15: 15. The source of the compound fertilizer is not specially required, and the compound fertilizer can be obtained by adopting commercial products well known to the technical personnel in the field. The compound fertilizer described in the invention and the examples is preferably purchased from Norwegian International Inc. According to the invention, the paclobutrazol is applied every 3 months from 11 months every year (more preferably 11-14 months every year), and the compound fertilizer is applied, so that the flowering branch number and the flower bud number of the eucalyptus urophylla can be increased, the tree height increment is reduced to the greatest extent, and the dwarfing of the eucalyptus urophylla is effectively realized.
In order to further illustrate the present invention, the following examples are provided to describe the dwarfing and flowering promoting method of eucalyptus urophylla according to the present invention in detail, but they should not be construed as limiting the scope of the present invention.
Example 1
A method for dwarfing and flower promoting of eucalyptus urophylla comprises the following steps:
the eucalyptus urophylla is trimmed into: the eucalyptus urophylla seedlings have 3-5 main branches, the height of the seedlings is 106.69 +/-8.33 cm, the crown breadth is 135.41 +/-11.61 cm, and the ground diameter is 31.4 +/-3.12 mm;
applying paclobutrazol to Eucalyptus urophylla 11 months and 11 days; the application position is the root of the eucalyptus urophylla (in the soil at the position 15cm away from the root of the eucalyptus urophylla), and the application frequency is 1 time/12 months; the application amount of the paclobutrazol is 0.67g/cm (2 g for each application amount of each eucalyptus urophylla for weighing convenience) in terms of the ground diameter of the eucalyptus urophylla.
Example 2
A method of dwarfing and flower promoting eucalyptus urophylla similar to example 1, except that the application is at the root and leaf of eucalyptus urophylla; the initial application time for root application and leaf application were 11 months and 14 days; the application frequency of the roots and the leaves is once every 3 months; the application amount of paclobutrazol to the root of eucalyptus urophylla is 0.335g/cm (1 g per plant) each time and the application amount of paclobutrazol to the eucalyptus urophylla is 0.1675g/cm (0.5 g per plant) each time based on the diameter of the eucalyptus urophylla.
Example 3
A method of dwarfing and flower promoting eucalyptus urophylla similar to example 1, except that the application is at the root and leaf of eucalyptus urophylla; the initial application time for root application and leaf application were 11 months and 13 days; the application frequency of the roots and the leaves is once every 4 months; the application amount of paclobutrazol on the root and the leaf of the eucalyptus urophylla is 0.335g/cm (the application amount of each plant is 1g) each time based on the diameter of the eucalyptus urophylla.
Example 4
A dwarfing and flower-promoting method of eucalyptus urophylla similar to that in example 1, except that a compound fertilizer (the mass ratio of nitrogen, phosphorus and potassium elements of the compound fertilizer is 15:15:15) is applied at the same time of applying paclobutrazol; the initial application time of the paclobutrazol and the compound fertilizer is 11 months and 11 days; the application frequency of the paclobutrazol and the compound fertilizer is once every 3 months; the application amount of the compound fertilizer is 8.33g/cm (250 g per plant) based on the ground diameter of the eucalyptus urophylla.
Application example 1
The test site is arranged in a nursery garden of Guangdong province forestry scientific research institute (Tianhe area in Guangzhou city), is positioned at 23 degrees of 14N, 113 degrees of 23E and an altitude of 25m, is a typical subtropical monsoon climate, has an annual average temperature of 23 ℃, has an average temperature of 13.3 ℃ (1 month) in the lowest month, has an average temperature of 38.1 ℃ (8 months) in the highest month, has an annual average humidity of 79%, has an annual precipitation of 1638mm, and has a precipitation of 4-9 months accounting for 80% of the annual precipitation.
The material for the test is a eucalyptus urophylla parent in a planting bag of a eucalyptus urophylla dwarfing breeding garden (the batch of material is commercial seeds of the eucalyptus urophylla introduced from Australia in 2007, the commercial seeds are planted in the southern mountain of Zhaoqing city in Guangdong province in 2008, branches are taken after the material is selected to be excellent in 2017 and grafted on a eucalyptus clone stock, and the stock is transplanted in a black planting bag with the upper caliber multiplied by 80cm (upper caliber multiplied by height) after 6 months), and the eucalyptus urophylla parent is trimmed, so that each seedling has 3-5 main branches, the average seedling height is 106.69 +/-8.33 cm, the crown width is 135.41 +/-11.61 cm, and the ground diameter is 31.4 +/-3.12 mm.
54 clones of eucalyptus urophylla with consistent growth vigor are selected for processing. And (4) carrying out overall condition investigation on the plants to be treated in 11/10/2019, wherein the overall condition investigation comprises the ground diameter, the crown width and the tree height. The selected materials are treated by paclobutrazol and/or fertilization (for convenience of description, the materials are simply referred to as "treatment") from 11 months to 11 months and 14 days in 2019, and the treated plants are investigated in 11 months in 2020.
The invention adopts 3 test factors of the application amount, the application times and the mode of each piece of the paclobutrazol for each tail leaf, wherein each factor is set to be 4 levels and has 16 treatments, and the treatment is detailed in tables 1 and 2 (wherein, example 1 is recorded as treatment 16, example 2 is recorded as treatment 9, example 3 is recorded as treatment 14, and example 4 is recorded as treatment 13). The first treatment was started at 11 to 14 days 11 to 11 months in 2019, after which the application time was equally divided into months per 12 months.
TABLE 1 Eucalyptus urophylla dwarfing test design
| Factors of the fact | 1 | 2 | 3 | 4 |
| Application amount of paclobutrazol in each application | 0.5g | 1.0g | 1.5g | 2g |
| Number of times | 1 | 2 | 3 | 4 |
| (Mode) | Root fertilizer | Leaf fertilizer | Root and leaf application | Root application and fertilizer application |
TABLE 2 Eucalyptus urophylla dwarfing treatment
| Treatment of | Number of times | Application time | (Mode) | Application amount of paclobutrazol in each application |
| Process 1 | 4 | 2019.11，2020.02，2020.05，2020.08 | Root fertilizer | 0.5g |
| Treatment 2 | 3 | 2019.11，2020.03，2020.07 | Leaf fertilizer | 0.5g |
| Treatment 3 | 2 | 2019.11，2020.05 | Root and leaf application | 0.25g root application and 0.25g leaf application |
| Treatment 4 | 1 | 2019.11 | Root application and fertilizer application | 0.5g |
| Treatment 5 | 4 | 2019.11，2020.02，2020.05，2020.08 | Leaf fertilizer | 1g |
| Treatment 6 | 3 | 2019.11，2020.03，2020.07 | Root fertilizer | 1g |
| Treatment 7 | 2 | 2019.11，2020.05 | Root application and fertilizer application | 1g |
| Treatment 8 | 1 | 2019.11 | Root and leaf of Henry rockvine | 0.5g root application and 0.5g leaf application |
| Process 9 | 4 | 2019.11，2020.02，2020.05，2020.08 | Root and leaf of Henry rockvine | 1g of root application and 0.5g of leaf application |
| Process 10 | 3 | 2019.11，2020.03，2020.07 | Root application and fertilizer application | 1.5g |
| Process 11 | 2 | 2019.11，2020.05 | Root fertilizer | 1.5g |
| Treatment 12 | 1 | 2019.11 | Leaf fertilizer | 1.5g |
| Treatment 13 | 4 | 2019.11，2020.02，2020.05，2020.08 | Root application and fertilizer application | 2g |
| Process 14 | 3 | 2019.11，2020.03，2020.07 | Root and leaf application | 1g root application and 1g leaf application |
| Treatment 15 | 2 | 2019.11，2020.05 | Leaf fertilizer | 2g |
| Process 16 | 1 | 2019.11 | Root fertilizer | 2g |
| CK | - | - | - | - |
Note: the fertilizer application in table 2 shows that, in addition to paclobutrazol, a compound fertilizer (the compound fertilizer is purchased from norwegian international ltd., the mass ratio of nitrogen, phosphorus and potassium elements is 15:15:15) is applied, and the application amount of the compound fertilizer per plant is 8.33g/cm (the application amount per plant is 250g) in terms of the diameter of the eucalyptus urophylla.
Selecting 54 clones of eucalyptus urophylla which grow uniformly and are planted in seedling raising containers with the same specification, and measuring indexes such as seedling height, ground diameter, crown width, number of new sprout trees, number of flowering branches, number of flowering buds, length of new branches and the like by taking 3 clones after 12 months of treatment; measuring the height, the crown width and the length of a new branch by using a graduated scale; the ground diameter is measured with a vernier caliper.
The data were analyzed in Microsoft Excel 2010, R language. The analysis of variance is used for testing the influence of different treatments on indexes such as seedling height, ground diameter, crown width, number of new-bud trees, number of flowering branches, number of flowering buds, length of new branches and the like of the female parent of the eucalyptus urophylla.
The tree height, ground diameter and crown width indexes of 54 eucalyptus urophylla parents before and after treatment are subjected to variance analysis, and the results are shown in table 3.
TABLE 3 analysis of variance between different traits
Note: the treatments in table 3 were 16 different treatments as described in table 2 above, the block indicated 3 replicate measurements for each treatment, the tree height 1911 was the tree height measured in 11 months in 2019, the tree height 2011 was the tree height measured in 11 months in 2020, and the same applies to the other properties, as well as table 4.
Multiple comparative analysis of different properties of the eucalyptus urophylla among different dwarfing treatments shows that the results are shown in table 4; the correlation between different dwarfing treatments was analyzed and the results are shown in Table 5.
TABLE 4 multiple comparative analysis between different dwarfing treatments
TABLE 5 correlation analysis between different dwarfing treatments
As can be seen from Table 3, the difference between the indexes before treatment is not significant, and the indexes of the tree height and the crown width after treatment respectively reach significant levels (P is less than or equal to 0.05). In addition, the number of new sprouts, the length of new branches and the increment of crown width after treatment also reach obvious and extremely obvious levels (P is less than or equal to 0.01), which indicates that different paclobutrazol dwarfing treatments have strong influence on the growth condition of the eucalyptus urophylla parents, and the difference between the ground diameters does not reach the obvious level (P is 0.053).
As can be seen from table 4, there was a significant difference in seedling height increment between treatments. Wherein the seedling height increment is the treatment 11 which is 90cm at most; the minimum was treatment 13, which was only 1.67 cm. The largest increase in ground diameter was treatment 4 (0.5 g + fertilization for 1 application of roots) which was 16.92 mm; the next treatment was 11(2 root applications, 1.5 g/application) and was 16.39 mm. The minimum was treatment 14(3 times, root application, 2 g/time, 1g root application +1g leaf application) at 2.58 mm. The highest increase in crown width was the control treatment of 58cm and the smallest was treatment 4 of only 6.67cm, indicating that paclobutrazol treatment promoted trunk growth and limited collateral development.
The new shoot length difference between different treatments is large. The longest new shoot length is control treatment (CK), and the length is 54.6 cm; the shortest is treatment 6(3 root applications, 1g each time), which indicates that paclobutrazol has strong inhibitory effect on the development of new branches. In addition, different treatments have a great impact on the number of flowers. After 12 months of treatment, none of treatments 1, 2, 3, 5, 6, 8, 11 and 12 produced flowering shoots, while the remaining initial stages showed different numbers of flowering shoots. The most numerous flowering branches were treated 16(1 time, root application, 2 g/time), followed by 14(1 time, root application + leaf application, 2 g/time, 1g root application +1g leaf application). Moreover, the number of buds also showed a different state between the treatments. The most numerous buds reached 300 flowers/plant for treatments 16(1, root application, 2 g/application) and 9(4, root application + foliar application, 1.5 g/application, 1g root application +0.5g foliar application). The least number of buds was treated 10(3 times, root application + fertilization, 1.5 g/time). Nevertheless, the average number of flowers per bouquet varied between treatments. For example, the number of flowers treated with 9 was the highest, 30 flowers/branch. The same treatment 16 as the total amount of flowers was only 7.89 flowers/shoot.
Correlation analysis was performed on the amount of paclobutrazol applied in a single application, the number of applications, the total amount of applications, and indicators such as clonal growth and flower amount of eucalyptus urophylla (table 5). The results show that the length of new branches is in extremely significant negative correlation with the total amount of paclobutrazol application (r ═ 0.67 and P ═ 0), in significant negative correlation with the increase of tree height (r ═ 0.55 and P ═ 0.03), and in significant positive correlation with the total number of buds and the number of single-branch buds (r ═ 0.53 and P ═ 0.03), and that the application of paclobutrazol can lead to the inhibition of the growth traits of eucalyptus urophylla and greatly promotes the increase of the number of buds. The amount of paclobutrazol applied in a single application is obviously positively correlated with the number of flowering branches (r is 0.56, and P is 0.03), the total number of buds (r is 0.56, and P is 0.02), and is obviously negatively correlated with the length of new branches (r is-0.62, and P is 0.01), and the result is similar to the result of total application, which indicates that the amount of paclobutrazol applied is an important factor influencing the flowering of the eucalyptus urophylla. The application times are obviously negatively correlated with the increase of the tree height (r is-0.6, and P is 0.05), are negatively correlated with the increase of the ground diameter and the increase of the crown width, and have no correlation with the number of the flowering branches and the total number of the flower buds.
Considering factors such as tree height increment, new branch length, flower branch number and flower bud number comprehensively, the method for treating 9, 13, 14 and 16 is a suitable method for dwarfing and promoting flowers of eucalyptus urophylla; the flower amount of 9 and 14 treated flowers is medium, and the number of new sprouts is large; however, the application times are more, and the workload is larger; the height increment of 13 trees is minimum, the number of new sprouts is maximum, the flower quantity is large, soil is applied for 4 times, and the workload is large; the number of treated 16 flowering branches is the largest, the flower amount is the largest, the soil is applied for 1 time, the workload is small, and the treated group 16 has the largest tree height increment, but the problem can be solved by post pruning. The best application method is to treat 16 (2 g of paclobutrazol in 1 application) in combination with the material cost and the labor cost.
In conclusion, the various schemes for applying paclobutrazol provided by the invention can improve the high flowering branch quantity and the bud quantity of the eucalyptus urophylla and simultaneously realize dwarfing of the eucalyptus urophylla.
Although the present invention has been described with reference to the preferred embodiments, it should be understood that various changes and modifications can be made therein by those skilled in the art without departing from the spirit and scope of the invention as defined in the appended claims.
Claims (10)
1. A method for dwarfing and flower promotion of eucalyptus urophylla is characterized by comprising the following steps:
administering paclobutrazol to eucalyptus urophylla; the total application amount of the paclobutrazol is 0.67 g/cm-2.7 g/cm per 12 months by the ground diameter of the eucalyptus urophylla; the location of application includes on the roots and/or blades.
2. The method of claim 1, wherein the initial application of paclobutrazol is performed over a period of 11 months.
3. The method according to claim 1 or 2, wherein the number of applications is 1-4 per 12 months.
4. The method according to claim 1 or 2, wherein the method of administering paclobutrazol comprises: the site of application is the root; the application time is 11 months, and the application times are 1 time/12 months; the application amount of the paclobutrazol is 0.67g/cm in each application based on the ground diameter of the eucalyptus urophylla.
5. The method according to claim 1 or 2, wherein the method of administering paclobutrazol comprises: the application positions are roots and leaves; the initial application time for both root and leaf application was 11 months; the application frequency of the roots and the leaves is once every 3 months; the application amount of the paclobutrazol to the root of the eucalyptus urophylla is 0.335g/cm for each time and the application amount of the paclobutrazol to the eucalyptus urophylla is 0.1675g/cm for each time according to the ground diameter of the eucalyptus urophylla.
6. The method according to claim 1 or 2, wherein the method of administering paclobutrazol comprises: the application positions are roots and leaves; the initial application time for both root and leaf application was 11 months; the application frequency of the roots and the leaves is once every 4 months; the application amount of the paclobutrazol on the root and the leaf of the eucalyptus urophylla is 0.335g/cm per time according to the ground diameter of the eucalyptus urophylla.
7. The method according to claim 1 or 2, characterized in that the method further comprises: applying a compound fertilizer; the method specifically comprises the following steps: the application position of the paclobutrazol is the root, and the initial application time of the paclobutrazol and the compound fertilizer is 11 months; the application frequency of the paclobutrazol and the compound fertilizer is once every 3 months; according to the land diameter of the eucalyptus urophylla, the application amount of the paclobutrazol at the root of the eucalyptus urophylla is 0.67g/cm each time, and the application amount of the compound fertilizer is 8.33g/cm each time; the mass ratio of nitrogen, phosphorus and potassium elements of the compound fertilizer is 15:15: 15.
8. The method of claim 1, further comprising trimming eucalyptus urophylla before applying the paclobutrazol; pruning the eucalyptus urophylla into: the eucalyptus urophylla seedlings have 3-5 main branches, the height of the seedlings is 106.69 +/-8.33 cm, the crown breadth is 135.41 +/-11.61 cm, and the ground diameter is 31.4 +/-3.12 mm.
9. The method of claim 1, wherein the dwarfing and flower promotion comprises one or more of reducing plant height, reducing shoot length, increasing number of flowering branches and number of flower buds.
10. The method of claim 1, wherein the paclobutrazol is applied to the root of eucalyptus urophylla at a location in the soil at a radius of 13-17 cm from the root.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361841.1A CN114080948B (en) | 2021-11-17 | 2021-11-17 | Method for dwarfing and flower promoting of eucalyptus urophylla |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202111361841.1A CN114080948B (en) | 2021-11-17 | 2021-11-17 | Method for dwarfing and flower promoting of eucalyptus urophylla |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114080948A true CN114080948A (en) | 2022-02-25 |
| CN114080948B CN114080948B (en) | 2022-06-24 |
Family
ID=80301333
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202111361841.1A Active CN114080948B (en) | 2021-11-17 | 2021-11-17 | Method for dwarfing and flower promoting of eucalyptus urophylla |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN114080948B (en) |
Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011024566A (en) * | 2009-06-23 | 2011-02-10 | Utsunomiya Univ | Method for blooming nursery stock raised from seed, and nursery stock raised from seed |
| CN102187803A (en) * | 2011-03-30 | 2011-09-21 | 广东省林业科学研究院 | Flower forcing method for rhodoleia championii |
| WO2013060147A1 (en) * | 2011-10-26 | 2013-05-02 | 岭南园林股份有限公司 | Multi-effect tree dripping liquid and usage thereof |
| CN106105974A (en) * | 2016-07-01 | 2016-11-16 | 广东省林业科学研究院 | A kind of control water control fertilizer method of large eucalyptus seedlings |
| CN106258307A (en) * | 2016-07-26 | 2017-01-04 | 华南农业大学 | The dwarfing of the potted plant Moringa that a kind of growth retardant processes and fertilizing method |
| CN107114182A (en) * | 2017-04-28 | 2017-09-01 | 国家林业局桉树研究开发中心 | Eucalyptus breeding garden is downgraded and windproof cultural method and its eucalyptus breeding garden |
| CN107660433A (en) * | 2017-09-27 | 2018-02-06 | 广东省林业科学研究院 | A kind of Eucalyptus urophylla seedling stage breeding method |
| CN108464182A (en) * | 2018-03-29 | 2018-08-31 | 云南省林业科学院 | The method for promoting Bud Formation of Eucalyptus smithii L breeding garden to blossom and bear fruit and improve percentage of seedgermination |
| CN111165206A (en) * | 2020-01-21 | 2020-05-19 | 东莞市农业科学研究中心 | Method for controlling tips and promoting flowers of osmanthus-flavored litchi |
| CN113892390A (en) * | 2021-11-11 | 2022-01-07 | 宁波市海曙政轩林业有限公司 | Cherry seedling dwarfing cultivation method |
-
2021
- 2021-11-17 CN CN202111361841.1A patent/CN114080948B/en active Active
Patent Citations (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2011024566A (en) * | 2009-06-23 | 2011-02-10 | Utsunomiya Univ | Method for blooming nursery stock raised from seed, and nursery stock raised from seed |
| CN102187803A (en) * | 2011-03-30 | 2011-09-21 | 广东省林业科学研究院 | Flower forcing method for rhodoleia championii |
| WO2013060147A1 (en) * | 2011-10-26 | 2013-05-02 | 岭南园林股份有限公司 | Multi-effect tree dripping liquid and usage thereof |
| CN106105974A (en) * | 2016-07-01 | 2016-11-16 | 广东省林业科学研究院 | A kind of control water control fertilizer method of large eucalyptus seedlings |
| CN106258307A (en) * | 2016-07-26 | 2017-01-04 | 华南农业大学 | The dwarfing of the potted plant Moringa that a kind of growth retardant processes and fertilizing method |
| CN107114182A (en) * | 2017-04-28 | 2017-09-01 | 国家林业局桉树研究开发中心 | Eucalyptus breeding garden is downgraded and windproof cultural method and its eucalyptus breeding garden |
| CN107660433A (en) * | 2017-09-27 | 2018-02-06 | 广东省林业科学研究院 | A kind of Eucalyptus urophylla seedling stage breeding method |
| CN108464182A (en) * | 2018-03-29 | 2018-08-31 | 云南省林业科学院 | The method for promoting Bud Formation of Eucalyptus smithii L breeding garden to blossom and bear fruit and improve percentage of seedgermination |
| CN111165206A (en) * | 2020-01-21 | 2020-05-19 | 东莞市农业科学研究中心 | Method for controlling tips and promoting flowers of osmanthus-flavored litchi |
| CN113892390A (en) * | 2021-11-11 | 2022-01-07 | 宁波市海曙政轩林业有限公司 | Cherry seedling dwarfing cultivation method |
Non-Patent Citations (15)
| Title |
|---|
| JOHNATANVILASBOA等: "Rooting of eucalypt cuttings as a problem-solving oriented model in plant biology", 《PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY》 * |
| JOHNATANVILASBOA等: "Rooting of eucalypt cuttings as a problem-solving oriented model in plant biology", 《PROGRESS IN BIOPHYSICS AND MOLECULAR BIOLOGY》, vol. 7, no. 12, 30 December 2018 (2018-12-30) * |
| M.W.蒙科等: "多效唑对亮果桉矮化种子园的花芽生产影响", 《桉树科技》 * |
| M.W.蒙科等: "多效唑对亮果桉矮化种子园的花芽生产影响", 《桉树科技》, no. 01, 30 April 2013 (2013-04-30) * |
| 吴坤明等: "桉树人工有性杂交的花粉处理和授粉技术", 《广东林业科技》 * |
| 吴坤明等: "桉树人工有性杂交的花粉处理和授粉技术", 《广东林业科技》, no. 03, 20 August 1997 (1997-08-20) * |
| 吴敬才等: "多效唑对瑞典醉蝶花的矮化促花效应初报", 《福建农业科技》 * |
| 吴敬才等: "多效唑对瑞典醉蝶花的矮化促花效应初报", 《福建农业科技》, 30 March 2016 (2016-03-30) * |
| 杨会肖等: "水肥胁迫对不同尾叶桉无性系叶绿素荧光特性的影响", 《广东农业科学》 * |
| 杨会肖等: "水肥胁迫对不同尾叶桉无性系叶绿素荧光特性的影响", 《广东农业科学》, vol. 48, no. 5, 30 May 2021 (2021-05-30) * |
| 潘瑞炽等: "《植物生长发育的化学控制》", vol. 1, 30 April 1995, 广东高等教育出版社 * |
| 罗建中: "多效唑矮化桉树无性系的效果研究", 《广东林业科技》 * |
| 罗建中: "多效唑矮化桉树无性系的效果研究", 《广东林业科技》, no. 04, 20 November 2000 (2000-11-20) * |
| 蓝贺胜: "多效唑对巨桉种子园母树开花结实的影响", 《林业科技开发》 * |
| 蓝贺胜: "多效唑对巨桉种子园母树开花结实的影响", 《林业科技开发》, no. 06, 28 November 2005 (2005-11-28) * |
Also Published As
| Publication number | Publication date |
|---|---|
| CN114080948B (en) | 2022-06-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| Abdullah et al. | Propagation of Latkan (Baccaurea sapida Muell. Arg.) by mature stem cutting | |
| Singh et al. | A review on vegetative propagation of grape (Vitis vinifera L.) through cutting | |
| Makhkamov et al. | Morphogenesis and Seasonal Developmental Rhythm Under the Conditions of Introduction of Curcuma Longa L. | |
| Amrilloyevna et al. | THE GROWTH, DEVELOPMENT AND YIELD OF APPLE TREES IN INTENSIVE FRUIT ORCHARDS ARE HARDWOOD CUTTING COMBINATIONS AND THEIR DEPENDENCE ON THE THICKNESS OF SEEDLINGS. | |
| CN104285771B (en) | Semen Juglandis container seedling water planting breeding method | |
| Gimenes et al. | Propagation of Cabralea canjerana by mini-cutting | |
| Bala et al. | Effect of calcium nitrate on propagation of LA hybrid lilies through Scaling | |
| CN102090396B (en) | Application of 5-aminolevulinic acid (ALA) in thinning flourish flowers of fruit trees | |
| Salisu et al. | Effect of soilless media on growth and some physiological traits of rubber (Hevea brasiliensis) seedlings | |
| CN114080948B (en) | Method for dwarfing and flower promoting of eucalyptus urophylla | |
| Bala et al. | Effect of calcium nitrate on propagation of LA hybrid lilies through scaling | |
| Yunusov | THE GROWTH, DEVELOPMENT AND YIELD OF APPLE TREES IN INTENSIVE FRUIT ORCHARDS ARE HARDWOOD CUTTING COMBINATIONS AND THEIR DEPENDENCE ON THE THICKNESS OF SEEDLINGS. | |
| CN110583286B (en) | Method for improving sprouting capacity of eucalyptus globulus seedlings based on exogenous hormones and stumping height | |
| CN108464182A (en) | The method for promoting Bud Formation of Eucalyptus smithii L breeding garden to blossom and bear fruit and improve percentage of seedgermination | |
| CN110959397B (en) | Grafting method of taxus chinensis var mairei and construction method of hybrid seed garden of taxus chinensis var mairei | |
| NO136301B (en) | ||
| Peña-Olmos et al. | Fruit quality and production of Vitis vinifera L. Chardonnay affected by partial defoliation in tropical highlands | |
| Sharma | Effect of plant growth regulators on growth and yield of brinjal at Khajura, Banke | |
| M Ameen A Al-Imam | Effect of soaking periods, gibberellic acid, and benzyladenine on pistachio seeds germination and subsequent seedling growth (Pistacia vera L.) | |
| Malshe et al. | Effect of different growth regulators on growth of khirni (Manilkara hexandra L.) rootstock | |
| Toshkina et al. | Improved methods of original and elite seed potato growing aimed at creation of a bank of healthy potato varieties in NI Kolesnikov and DP Pavlyuk farms in Novgorod region | |
| Trifonova | Influence of biologics on the growth and productivity of tomato plants | |
| CN113197212B (en) | Medicament for promoting flowering and fruiting of spiny branches of Chinese chestnuts and application thereof | |
| Cavusoglu | An abiotic stress factor: Growth substrate effect on Tulipa gesneriana growth | |
| Onica et al. | The features of growth, development and cultivation of Nandina domestica Thunb. under the climatic conditions of the Republic of Moldova |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |