Method for delaying flowering period of Korla bergamot pears

Abstract

The invention discloses a method for delaying the flowering period of Korla bergamot pears, which comprises the following steps: checking weather forecast in the germination period of flower buds of the Korla bergamot pears, the weather forecast shows that late spring coldness comes at the predicted full-bloom period of the Korla bergamot pears, and uniformly spraying a mixed medicament of Flu and TIBA on the whole plants of the Korla bergamot pears in the germination period of the flower buds of the Korla bergamot pears, inducing the Korla bergamot pears to delay flowering; wherein in the mixed medicament of the Flu and the TIBA, the concentration of the Flu is 100 mg / L, and the concentration of the TIBA is 100 mg / L. The method can delay the flowering period of the Korla fragrant pears to reduce the influence of low temperature on growth and development of flower organs and pollination and fertilization of the Korla fragrant pears, and ensures productivity as much as possible while overcoming weather conditions, so that the fruit setting rate, yield and quality of the Korla fragrant pears are improved, and the yield of the Korla fragrant pears is increased. Technical guidance is provided for prevention of late spring coldness harm, high quality and high yield of the Korla pears, and the method has wide application prospects.

Description

Technical Field

[0001] The invention relates to the technical field of fruit tree cultivation, and in particular to a method for delaying the flowering period of Korla fragrant pear. Background Art

[0002] The Korla pear, which blooms from March to April, is well known and loved by people for its unique and rich aroma, crisp taste, delicate flesh, strong resistance to stress during planting, and high yield. It is known as the "king of pears" and "prince of fruits". The Korla pear is a specialty of Xinjiang. According to statistics, the planting scale has exceeded 1.1 million mu, with an annual output of 100,000 tons, and has become one of the important pillar industries in the local area.

[0003] In recent years, how to prevent the damage of late spring cold has been an important issue in fruit tree production. Too low temperature will damage and fall off the flower organs of fruit trees, inhibit the normal development of flowers and affect pollination and fertilization, greatly reducing the fruit setting rate and fruit quality. Korla fragrant pear is also facing the damage of late spring cold, which has seriously affected the development of Korla fragrant pear industry.

[0004] At present, the common methods for preventing late spring cold damage to fruit trees include fumigation, whitewashing, blowing and irrigation, but the effects on Korla pear are not ideal. The fumigation method is easy to cause atmospheric environmental pollution; the whitewashing method is mostly used for mature trees (7-50 years old), which is easy to fall off, uneven in thickness, and has a short protection time; the blowing method has unstable effects, may cause physiological disorders, and increase labor costs; the irrigation method consumes a lot of resources, causes diseases and pests, and lowers soil temperature. Summary of the invention

[0005] The invention aims to provide a method for delaying the flowering period of Korla fragrant pear, so as to solve the shortcomings of the prior art.

[0006] To achieve the above object, the present invention adopts the following technical solutions:

[0007] A method for delaying the flowering period of Korla fragrant pear, the method comprising the following steps: checking the weather forecast during the Korla fragrant pear flower bud germination period, the weather forecast showing that late spring cold arrives during the predicted Korla fragrant pear full flowering period, and uniformly spraying a mixed agent of fluridone and 2,3,5-triiodobenzoic acid on the entire Korla fragrant pear plant during the Korla fragrant pear flower bud germination period to induce delayed flowering of the Korla fragrant pear; wherein the concentration of fluridone in the mixed agent of fluridone and 2,3,5-triiodobenzoic acid is 100 mg / L, and the concentration of 2,3,5-triiodobenzoic acid is 100 mg / L.

[0008] Furthermore, the flowering of Korla pear was delayed by 3 to 4 days.

[0009] Furthermore, the dosage of the mixture of fluridone and 2,3,5-triiodobenzoic acid is such that the spraying site is fully moistened without forming flowing water droplets; the spraying time is before 10:30 in the morning and after 17:30 in the afternoon on a sunny day.

[0010] Furthermore, if it rains within 5-7 days after spraying the mixture of fluridone and 2,3,5-triiodobenzoic acid, re-spraying should be carried out in time on a sunny day after the rain, and the re-spraying operation is the same as the initial spraying.

[0011] Furthermore, the Korla fragrant pear is a Korla fragrant pear that is over 7 years old.

[0012] Furthermore, the Korla fragrant pear is a Korla fragrant pear that is 7-50 years old.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] The method checks the weather forecast during the flower bud germination period of Korla fragrant pear (the flower bud germination period and the full flowering period generally differ by 15 to 20 days, and the full flowering period of the current year is predicted in combination with the temperature of the current year), and the weather forecast shows that the late spring cold is coming during the predicted full flowering period of Korla fragrant pear (the full flowering period is a key period for pollination and fertilization, and a key period for pear fruit setting and high-quality fruit formation. If the pistil is not frozen during the full flowering period, the stigma secretes more and has strong activity, which is beneficial to improving the fruit setting rate and the amount of high-quality fruit.). In order to avoid the influence of the late spring cold on the pollination and fertilization of the pistil, a mixed agent of Flu 100 mg / L + TIBA 100 mg / L is evenly sprayed on the entire Korla fragrant pear plant to induce delayed flowering for 3 to 4 days (at low temperatures, if the flower does not bloom, the petals can well protect the unbloomed pistil, so that the pistil maintains vigorous vitality, which is beneficial to pollination and fertilization). The invention can delay the flowering period of Korla fragrant pear, reduce the influence of low temperature on the growth and development of Korla fragrant pear flower organs and pollination and fertilization, and ensure productivity as much as possible while overcoming climatic conditions, thereby improving the fruit setting rate, yield and quality of Korla fragrant pear, and providing technical guidance for preventing the damage of late spring cold and achieving high-quality and high-yield Korla fragrant pear, and has broad application prospects. The invention is simple and easy to operate, low in cost, quick in effect and high in benefit. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 The pictures show the initial morphology of the flower buds in the control group (clear water) (left) and the state of the flower buds 20 days later (right).

[0016] Figure 2 The pictures show the initial morphology of flower buds in the Flu+TIBA II group (Flu 100 mg / L + TIBA 100 mg / L) (left) and the state of flower buds after 20 days (right). DETAILED DESCRIPTION

[0017] The technical scheme of the present invention will be described clearly and completely below in conjunction with the embodiments and drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0018] The following embodiments were carried out in the pear orchard in the playground of the west area of ​​Tarim University. The experimental material was Korla fragrant pear with Pyrus betulae as rootstock, Pyrus betulae as pollination, and a tree age of 29 years (calculated from the beginning of planting Pyrus betulae, and Korla fragrant pear was grafted in the second year of planting Pyrus betulae); the tree was oriented north-south, the plant spacing was 2m×4m, and the average tree height was 3m; Korla fragrant pear with good growth condition, basically the same growth potential, phenological period, and cultivation conditions was selected for the experiment.

[0019] When the flower buds of Korla pear are in the budding stage (March 19, 2024), check the weather forecast. The weather forecast shows that the late spring cold will come on April 6, 2024 (the predicted start time of the Korla pear's peak flowering period this year). The Korla pear is treated as follows, and each treatment is repeated 3 times:

[0020] (1) Control group (CK): tap water;

[0021] (2) Flu+TIBA I group: Fluridone (Flu) 50 mg / L + 2,3,5-triiodobenzoic acid (TIBA) 100 mg / L, prepared with tap water;

[0022] (3) Flu+TIBA II group: Flu 100 mg / L + TIBA 100 mg / L, prepared with tap water;

[0023] (4) Flu+TIBA III group: Flu 150 mg / L + TIBA 100 mg / L, prepared with tap water;

[0024] (5) Flu+TIBAIV group: Flu 200 mg / L + TIBA 100 mg / L, prepared with tap water;

[0025] (6) Chlormequat I group: 50 mg / L chlormequat, prepared with tap water;

[0026] (7) Chlormequat II group: 200 mg / L chlormequat, prepared with tap water;

[0027] (8) Chlormequat III group: 350 mg / L chlormequat, prepared with tap water;

[0028] (9) Chlormequat IV group: 500 mg / L chlormequat, prepared with tap water;

[0029] (10) Paclobutrazol group I: paclobutrazol 50 mg / L, prepared with tap water;

[0030] (11) Paclobutrazol II group: 250 mg / L paclobutrazol, prepared with tap water;

[0031] (12) Paclobutrazol III group: paclobutrazol 450 mg / L, prepared with tap water;

[0032] (13) Paclobutrazol IV group: 600 mg / L paclobutrazol, prepared with tap water.

[0033] During treatment, add the prepared agent to the sprayer and spray the entire plant (above ground part) of Korla fragrant pear. The droplets during spraying should be small and uniform. The amount of agent used should be sufficient to fully moisten the entire plant without forming flowing water droplets. The spraying time should be before 10:30 in the morning and after 17:30 in the afternoon on a sunny day. If it rains within 5-7 days after spraying, re-spray in time on a sunny day after the rain. The re-spraying operation is the same as the initial spraying. The flowering period of each treatment is counted. The initial flowering period is when 5% of the flowers on the Korla fragrant pear tree are in bloom. The peak flowering period is when 25% of the flowers on the Korla fragrant pear tree are in bloom. The final flowering period is when 75% of the flowers on the Korla fragrant pear tree are in bloom. The statistical results of each treatment are shown in Tables 1 and Figure 1-2 shown.

[0034] Table 1 Effects of Flu+TIBA, chlormequat, and paclobutrazol on the flowering period of Korla pear

[0035]

[0036] As shown in Table 1, compared with the control, the treatment of Flu50mg / L+TIBA100mg / L had little effect on the flowering period of Korla fragrant pear; the treatment of Flu100mg / L+TIBA100mg / L had a better effect, which could delay the flowering period of Korla fragrant pear by 3-4 days, and the flower organs did not change, and the leaves and new shoots grew normally; the effect of Flu150mg / L+TIBA100mg / L on delaying the flowering period of Korla fragrant pear was close to that of Flu100mg / L+TIBA100mg / L, but the pedicel became shorter, the development of new shoots was hindered (normal new shoots can grow to more than 20cm, while the new shoots of this treatment are less than 5cm), the petiole is short, and the leaves are small; after the treatment of Flu200mg / L+TIBA100mg / L, the flowering period of Korla fragrant pear was significantly postponed, the pedicel was extremely short, and no leaves and new shoots were seen. Compared with the control, chlormequat and paclobutrazol could delay the flowering period of Korla fragrant pear by 1-2 days. In addition, through years of observation, it was found that Flu 100mg / L+TIBA 100mg / L had light residues in the trees, had little impact on fruit quality, and caused little pollution to the environment; however, chlormequat chloride and paclobutrazol remained in the trees for 3-4 years, which could easily affect tree growth and development, flower bud differentiation, and fruit quality.

[0037] The above description is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any changes or substitutions that can be easily conceived by any technician familiar with the technical field within the technical scope disclosed by the present invention should be covered within the protection scope of the present invention.

Claims

1. A method for delaying the flowering period of Korla fragrant pear, characterized in that: The method comprises the following steps: checking the weather forecast during the Korla fragrant pear budding period, the weather forecast showing that the late spring cold arrives during the predicted Korla fragrant pear flowering period, and spraying a mixed agent of fluridone and 2,3,5-triiodobenzoic acid uniformly on the entire Korla fragrant pear plant during the Korla fragrant pear budding period to induce delayed flowering of the Korla fragrant pear; wherein the concentration of fluridone in the mixed agent of fluridone and 2,3,5-triiodobenzoic acid is 100 mg / L, and the concentration of 2,3,5-triiodobenzoic acid is 100 mg / L.

2. A method for delaying the flowering period of Korla fragrant pear according to claim 1, characterized in that: This can induce the Korla pear to delay flowering by 3 to 4 days.

3. A method for delaying the flowering period of Korla fragrant pear according to claim 1 or 2, characterized in that, The dosage of the mixture of fluridone and 2,3,5-triiodobenzoic acid is such that the spraying area is fully moistened without forming flowing water droplets; the spraying time is before 10:30 in the morning and after 17:30 in the afternoon on a sunny day.

4. A method for delaying the flowering period of Korla fragrant pear according to claim 1 or 2, characterized in that, If it rains within 5-7 days after spraying the mixture of fluridone and 2,3,5-triiodobenzoic acid, re-spraying should be carried out in time on a sunny day after the rain. The re-spraying operation is the same as the initial spraying.

5. A method for delaying the flowering period of Korla fragrant pear according to claim 1 or 2, characterized in that: Korla fragrant pear is a Korla fragrant pear that is over 7 years old.

6. A method for delaying the flowering period of Korla fragrant pear according to claim 5, characterized in that: Korla fragrant pear is a 7-50 year old Korla fragrant pear.

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