A tobacco stalk angle adjuster and its application

Abstract

This invention discloses a tobacco stem-leaf angle regulator and its application. The regulator uses water as a solvent and further includes brassinolide and indoleacetic acid. It is applied after tobacco transplanting and during the budding stage, sprayed at the junction of the tobacco stem and leaf. The regulator provided by this invention, when sprayed during the tobacco seedling stage, can quickly and accurately control the tobacco stem-leaf angle, increasing it and helping the tobacco plant achieve an ideal plant shape. This solves the problem of an unreasonable plant shape caused by a small stem-leaf angle, ultimately improving the yield and quality of tobacco.

Description

Technical Field

[0001] This invention relates to the field of crop cultivation technology, and more specifically to a tobacco stem-leaf angle regulator and its application. Background Technology

[0002] The stem-leaf angle, the angle between the leaf and the main stem, is a major factor determining the plant shape of cultivated tobacco. The size of this angle affects the tobacco's competition for light and air. A small stem-leaf angle results in upright leaves, low canopy light interception, and high light transmittance, which benefits the lower and middle leaves by allowing more light. However, it also reduces the plant's photosynthetic area and overall photosynthetic efficiency, potentially leading to yield reduction. Conversely, an excessively large petiole angle affects row spacing, hindering optimal planting density. As the primary harvested organ, a suitable stem-leaf angle helps tobacco achieve an ideal plant shape, improving yield and quality, and ultimately maximizing biomass and economic efficiency. Therefore, effectively regulating and utilizing the stem-leaf angle is of significant theoretical and practical value for improving tobacco yield and quality. The stem-leaf angle is primarily regulated by the variety's genetic factors, but is also influenced by external temperature and light conditions, cultivation practices, and other factors.

[0003] Currently, the control of the stem-leaf angle of tobacco mainly relies on selecting varieties with different stem-leaf angles and adopting different transplanting periods and planting densities. These techniques have disadvantages such as being time-consuming, costly, and having uncertain effects on controlling the stem-leaf angle, and cannot quickly and accurately control the stem-leaf angle of tobacco.

[0004] Therefore, how to provide an effective measure to adjust the angle between tobacco stems and leaves is a problem that urgently needs to be solved by those skilled in the art. Summary of the Invention

[0005] In view of this, the present invention provides a tobacco stem-leaf angle regulator and its application, which can quickly and accurately control the tobacco stem-leaf angle, solve the problem of unreasonable plant shape caused by a small tobacco stem-leaf angle, and improve tobacco yield and quality.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A tobacco stem-leaf angle regulator, using water as a solvent, also includes brassinolide and indoleacetic acid.

[0008] Preferably, the concentration of brassinolide is 10. -10 mol / L-10 -9 The concentration of indoleacetic acid is 10 mol / L. -5 mol / L-10 -4 mol / L.

[0009] The present invention also provides the application of the tobacco stem-leaf angle regulator described in the above technical solution, wherein the regulator is sprayed at the junction of the tobacco stem and leaf from the time the tobacco seedlings are transplanted until the budding stage.

[0010] Preferably, the spraying amount is 10 mL / time, or until liquid droplets fall at the junction of tobacco stems and leaves.

[0011] Preferably, the target tobacco leaves are 5cm-15cm long, and the spraying time is from 8:00 to 10:00 am, spraying once a day for 6 consecutive days.

[0012] As can be seen from the above technical solution, compared with the prior art, the present invention discloses a tobacco stem-leaf angle regulator and its application, which has the following beneficial effects:

[0013] The regulator provided by this invention, when sprayed during the tobacco seedling stage, can quickly and accurately control the angle between the tobacco stem and leaves, increase the angle between the tobacco stem and leaves, help the tobacco plant obtain an ideal plant shape, solve the problem of unreasonable plant shape caused by the small angle between the tobacco stem and leaves, and ultimately improve the yield and quality of tobacco. Attached Figure Description

[0014] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0015] Figure 1 A comparative diagram showing the effects of different reagents on the stem-leaf angle of the tobacco variety Zhongyan 101;

[0016] Figure 2 A comparative diagram showing the effects of different reagents on the stem-leaf angle of tobacco variety CB-1;

[0017] Figure 3 A comparative diagram showing the effects of different reagents on the stem-leaf angle of the tobacco variety 'Honghua Dajinyuan'. Detailed Implementation

[0018] The technical solution of the present invention will be clearly and completely described below with reference to the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present invention.

[0019] Example 1

[0020] Tobacco varieties Zhongyan 101, CB-1, and Honghua Dajinyuan were selected from tobacco plants in the field during the clump stage. Healthy plants with uniform growth and size were chosen, and leaves with a length of 5-15cm were labeled.

[0021] Each is configured with six processes:

[0022] Treatment 1: Water control;

[0023] Treatment 2: Using water as a solvent, brassinolide (10 -10 mol / L);

[0024] Treatment 3: Using water as a solvent, auxin (indoleacetic acid) (10) -4 mol / L) + brassinolide (10 -10 mol / L);

[0025] Treatment 4: Gibberellin (10) -5 mol / L) + brassinolide (10 -10 mol / L);

[0026] Treatment 5: Cytokinin (10 -5 mol / L) + brassinolide (10 -10 mol / L);

[0027] Treatment 6: Ethylene (10 -4 mol / L) + brassinolide (10 -10 (mol / L).

[0028] When the tobacco leaves are 5cm-15cm long, spray between 8-10 am, spraying the junction of the tobacco stem and leaves until droplets fall, about 10mL per application, once a day.

[0029] On days 0, 2, 6, and 12 after spraying, the stem-leaf angle was measured on the leaf parts marked with tags.

[0030] The effects of different treatments on the stem-leaf angle of tobacco variety Zhongyan 101 are as follows: Figure 1 As shown, the stem-leaf angle of the tobacco plant treated with the combination of indoleacetic acid and brassinolide was the largest and significantly higher than that of the control group. Compared with the control group, the stem-leaf angle increased by 28.43%, 70.94%, and 58.71% on days 2, 6, and 12, respectively, after the treatment with the combination of indoleacetic acid and brassinolide.

[0031] The effects of different treatments on the stem-leaf angle of tobacco variety CB-1 are as follows: Figure 2As shown, the stem-leaf angle of CB-1 treated with the combination of indoleacetic acid and brassinolide growth regulator was the largest and significantly higher than that of the control group. Compared with the control group, the stem-leaf angle increased by 64.00%, 91.18%, and 87.50% on days 2, 6, and 12, respectively, after the treatment with the combination of indoleacetic acid and brassinolide growth regulator.

[0032] The effects of different treatments on the stem-leaf angle of the tobacco variety Honghua Dajinyuan are as follows: Figure 3 As shown, the stem-leaf angle of the group treated with the combination of indoleacetic acid and brassinolide after spraying with growth regulators was significantly higher than that of the control group, increasing by 59.97%, 65.58%, and 82.93% on the 2nd, 6th, and 12th days of treatment, respectively.

[0033] The above results demonstrate that using the reagent combination of the present invention as a regulator can effectively, accurately, and quickly adjust the angle between tobacco stems and leaves.

[0034] The various embodiments in this specification are described in a progressive manner, with each embodiment focusing on the differences from other embodiments. The same or similar parts between the various embodiments can be referred to each other.

[0035] The above description of the disclosed embodiments enables those skilled in the art to make or use the invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the invention. Therefore, the invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. The application of a tobacco stem-leaf angle regulator, characterized in that, The regulator uses water as a solvent, and its active ingredients are brassinolide and indoleacetic acid, wherein the concentration of brassinolide is 10. -10 mol / L-10 -9 The concentration of indoleacetic acid is 10 mol / L. -5 mol / L-10 -4 mol / L; After the tobacco seedlings have recovered from transplanting and are in the budding stage, the regulator is sprayed onto the junction of the tobacco stem and leaves. The amount of the regulator is 10 mL per application, and the target tobacco leaf length is 5 cm-15 cm. The application time is from 8:00 AM to 10:00 AM, and the application is carried out once a day for 6 consecutive days.

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