Method for promoting growth of axillary buds of cut-flower rosa chinensis by applying potassium and calcium ions with proper concentration

Abstract

The invention relates to the technical field of fresh cut flower cultivation, and provides a method for promoting growth of axillary buds of cut-flower roses by applying potassium ions and calcium ions with proper concentrations, which comprises the following steps: applying a fertilizer with the potassium ion concentration of 1.5-3.0 mmol / L and the calcium ion concentration of 3.0-4.5 mmol / L after pruning the cut-flower roses; according to the method for promoting the growth of the axillary buds of the cut-flower roses, provided by the invention, by applying potassium and calcium ions with proper concentration, on one hand, the dormancy of the axillary buds is relieved, and after the potassium and calcium ions with proper concentration are applied, the axillary buds start to grow quickly, so that the harvesting time of the next crop of flowers is obviously advanced; on the other hand, the height of the plants is increased within the same growth time, and therefore the quality of the cut-flower roses is improved.

Description

Technical Field

[0001] This invention relates to the field of cut flower cultivation technology, and in particular to a method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions. Background Technology

[0002] Rose ( Rosa hybrida Rose (Rosa chinensis) is a woody plant belonging to the genus Rosa in the family Rosaceae, and is the world's largest producer of cut flowers. Throughout different stages of the development of the rose cut flower industry, high-yield and high-quality cut flowers have always been the primary goals pursued by flower producers worldwide. Therefore, continuous innovation is needed to further overcome technological barriers and achieve low-consumption, high-efficiency production.

[0003] In Yunnan's cut flower market, pink roses, represented by Pink Snow Mountain, hold a significant position, contributing over 25% of the industry's total sales. It's worth noting that while this variety possesses a significant competitive advantage among pink roses due to its unique layered petals and gradient colors (holding over 60% market share in its color family), market research has revealed several issues, such as paler flower color and thin, weak branches.

[0004] Potassium and calcium fertilizers play a crucial role in the quality of cut rose branches (axillary bud sprouting and branch length). However, in production, the growth and development of axillary buds and lateral branches are greatly affected by the environment. Excessively low or high temperatures can lead to difficulty in axillary bud sprouting and short branches, resulting in poor yield and quality of cut rose branches. Therefore, this potassium and calcium fertilizer concentration can not only significantly promote axillary bud development but also increase branch length, which is of great significance for improving both yield and quality.

[0005] Potassium and calcium fertilizers have a dual regulatory effect on the vegetative and reproductive growth of cut roses. Currently, there is no standard potassium and calcium formula concentration for reference in cut rose production. Therefore, exploring the most suitable potassium and calcium fertilizers is of great significance for soilless cultivation of cut roses. It can not only determine the optimal potassium and calcium concentrations required to ensure high yield and quality, enabling precise supply of fertilizer and water, but also effectively reduce water and fertilizer waste, and ensure green and efficient production of cut roses.

[0006] Currently, all research on water and fertilizer is conducted under soil cultivation conditions. However, due to the complexity of elements in the soil and the inaccuracy of element quantification, it is impossible to accurately elucidate the effects of potassium, calcium, and their coupling on the axillary bud development and branch length of cut roses. Therefore, this invention aims to explore the effects of potassium and calcium on the growth of Pink Snow Mountain roses in soilless cultivation, and to improve the yield, quality, and other phenotypes of Pink Snow Mountain roses by focusing on fertilizer. Summary of the Invention

[0007] The purpose of this invention is to overcome the deficiencies of the prior art and provide a method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions.

[0008] A method to promote the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions involves applying fertilizer with a potassium ion concentration of 1.5-3.0 mmol / L and a calcium ion concentration of 3.0-4.5 mmol / L after pruning the cut roses.

[0009] Furthermore, when pruning cut roses, one bud should be retained at each rose bush cut to concentrate nutrients and ensure that the bud receives sufficient nutrition, thus promoting successful germination.

[0010] Furthermore, after pruning the rose, remove the leaves at the bud point to reduce the inhibition of the bud point by abscisic acid in the leaves, thereby promoting the rapid growth of the bud point.

[0011] Furthermore, when the first batch of cut flower mother branches reach the harvesting stage, select flower branches with a thickness greater than 0.8 cm, and harvest them by cutting the branches 1.0 cm above the first bud from bottom to top.

[0012] Furthermore, after the previous batch of roses is harvested, apply fertilizer with a potassium ion concentration of 1.5-3.0 mmol / L and a calcium ion concentration of 3.0-4.5 mmol / L.

[0013] This invention provides fertilizer with appropriate concentrations of potassium and calcium ions during the cultivation of cut roses. On one hand, this breaks the dormancy of axillary buds, causing them to grow rapidly and significantly advancing the harvest time of the next batch of flowers. On the other hand, it increases the plant height within the same growth period, thereby improving the quality of the cut roses. After harvesting the flower branches, applying fertilizer with appropriate concentrations of potassium and calcium ions encourages rapid growth of the axillary buds at the base.

[0014] This invention, in a soilless cultivation mode, can accurately determine the potassium and calcium requirements of cut roses at different growth and development stages by controlling potassium and calcium elements, providing an important reference for precise fertigation. Attached Figure Description

[0015] To more clearly illustrate the technical solutions in this 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 some embodiments of this invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0016] Figure 1 A comparison chart showing the growth length of flower branches harvested from day 0 to day 10 after fertilization; Figure 2 A comparative analysis chart showing the growth length of axillary buds on day 10 after fertilization; Figure 3 A comparison chart showing the length of flower branches harvested 50 days after fertilization; Figure 4 This is a comparative analysis chart showing the growth length of flower branches harvested on the 50th day after fertilization. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of this invention clearer, the technical solutions of this invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this invention. All other embodiments obtained by those skilled in the art based on the embodiments of this invention without creative effort are within the scope of protection of this invention.

[0018] In order to further improve the cultivation techniques of cut roses and achieve high yields, thereby increasing the benefits of the industry, the applicant conducted a systematic and in-depth study on the growth and development of cut roses in the early stage, and found that potassium ions promote the growth of rose branches and the bud sprouting.

[0019] Therefore, this invention provides a method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions. Taking the cut rose 'Pink Snow Mountain' as a sample, potassium ions at a concentration of 1.5-3.0 mmol / L and calcium ions at a concentration of 3.0-4.5 mmol / L are applied during the cultivation of cut roses.

[0020] Specifically, after applying potassium ion fertilizer at a concentration of 2.5 mmol / L and calcium ion fertilizer at a concentration of 3.5 mmol / L, the dormancy of the basal axillary buds was broken, and they began to slowly sprout. About two days later, the buds began to sprout, and the length of the buds was significantly better than that of the control. This method can significantly increase the sprouting and growth rate of rose buds.

[0021] Figure 1 This is a comparison chart showing the growth length of flower branches harvested from day 0 to day 10 after fertilization. Figure 2 This is a comparative analysis chart of the growth length of axillary buds on the 10th day after fertilization (statistical comparison chart of the length of axillary buds measured on the 10th day). Figure 3 This is a comparison chart showing the length of flower branches harvested 50 days after fertilization. Figure 4This is a comparative analysis of the growth length of flower branches harvested on day 50 after fertilization. In the figure, ns, *, **, ***, and **** represent significant differences, where ns represents p-value > 0.05, * represents p-value ≤ 0.05, ** represents p-value ≤ 0.01, *** represents p-value ≤ 0.001, and **** represents p-value ≤ 0.0001.

[0022] Ten treatment groups were divided into groups, each receiving different concentrations of potassium and calcium ion fertilizers during the cultivation of cut roses.

[0023] Processing Group 1: CK: Potassium ion concentration 1.5 mmol / L, calcium ion concentration 3.0 mmol / L Processing Group 2: K1Ca1: Potassium ion concentration 2.0 mmol / L, calcium ion concentration 3.5 mmol / L Processing Group 3: K1Ca2: Potassium ion concentration 2.0 mmol / L, calcium ion concentration 4.0 mmol / L Processing Group 4: K1Ca3: Potassium ion concentration 2.0 mmol / L, calcium ion concentration 4.5 mmol / L Processing Group 5: K2Ca1: Potassium ion concentration 2.5 mmol / L, calcium ion concentration 3.5 mmol / L Processing Group 6: K₂Ca₂: Potassium ion concentration 2.5 mmol / L, calcium ion concentration 4.0 mmol / L Processing Group 7: K₂Ca₃: Potassium ion concentration 2.5 mmol / L, calcium ion concentration 4.5 mmol / L Processing Group 8: K3Ca1: Potassium ion concentration 3.0 mmol / L, calcium ion concentration 3.5 mmol / L Processing Group 9: K3Ca2: Potassium ion concentration 3.0 mmol / L, calcium ion concentration 4.0 mmol / L Processing Group 10: K3Ca3: Potassium ion concentration 3.0 mmol / L, calcium ion concentration 4.5 mmol / L Compare the experimental methods, procedures, data, and data analysis. 1) Control group (CK): After pruning the cut roses, a basic fertilizer solution for hydroponics of cut roses was prepared (CK group: potassium content 1.5 mmol / L, calcium content 3.0 mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), 6.027g of potassium dihydrogen phosphate (KH2PO4), 2.8g of chelated iron (EH-Fe6-Na), and 0.08g of chelated manganese (ED-MnNa2). Chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0024] 2) For the preferred (K1Ca1) formula, after pruning cut roses, add 1.26g of potassium nitrate (KNO3), 1.68g of potassium sulfate (K2SO4), 1.46g of potassium chloride (KCl), 4.1g of anhydrous calcium nitrate (Ca(NO3)2), and 6.3g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K1Ca1 group: potassium content is 2.0mmol / L, calcium content is 3.5mmol / L). The formula is as follows: per 100L of nutrient fertilizer, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and potassium dihydrogen phosphate (KH2PO4). 6.027g, chelated iron (EH-Fe6-Na) 2.8g, chelated manganese (ED-MnNa2) 0.08g, chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0025] 3) The preferred (K1Ca2) formula, after pruning cut roses, adds 1.26g of potassium nitrate (KNO3), 1.68g of potassium sulfate (K2SO4), 1.46g of potassium chloride (KCl), 8.2g of anhydrous calcium nitrate (Ca(NO3)2), and 12.6g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K1Ca2 group: potassium content is 2.0mmol / L, calcium content is 4.0mmol / L). The formula is as follows: per 100L of nutrient fertilizer, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and 12.6g of potassium dihydrogen phosphate (KH2PO4). The following ingredients were used: 6.027g chelated iron (EH-Fe6-Na), 2.8g chelated manganese (ED-MnNa2), 0.08g chelated zinc (ED-ZnNa2), 0.04g chelated copper (ED-CuNa2), 0.02g sodium molybdate dihydrate (Na2MoO4·2H2O), 0.12g boric acid (H3BO3), 0.04g calcium dihydrogen phosphate (Ca(H2PO4)2·H2O), 6.787g calcium sulfate (CaSO4), 2.067g ammonium dihydrogen phosphate (NH4H2PO4), 48.987g magnesium sulfate heptahydrate (MgSO4·7H2O), and 3.36g sodium bicarbonate (NaHCO3). The pH was controlled at 5.6-5.8, and the EC at 1.39-1.41.

[0026] 4) For the preferred (K1Ca3) fertilizer, after pruning cut roses, add 1.26g of potassium nitrate (KNO3), 1.68g of potassium sulfate (K2SO4), 1.46g of potassium chloride (KCl), 12.3g of anhydrous calcium nitrate (Ca(NO3)2), and 18.9g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K1Ca3 group: potassium content is 2.0mmol / L, calcium content is 4.5mmol / L). The formula is as follows: per 100L of nutrient fertilizer, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and 18.9g of potassium dihydrogen phosphate (KH2PO4). The following ingredients were used: 6.027g chelated iron (EH-Fe6-Na), 2.8g chelated manganese (ED-MnNa2), 0.08g chelated zinc (ED-ZnNa2), 0.04g chelated copper (ED-CuNa2), 0.02g sodium molybdate dihydrate (Na2MoO4·2H2O), 0.12g boric acid (H3BO3), 0.04g calcium dihydrogen phosphate (Ca(H2PO4)2·H2O), 6.787g calcium sulfate (CaSO4), 2.067g ammonium dihydrogen phosphate (NH4H2PO4), 48.987g magnesium sulfate heptahydrate (MgSO4·7H2O), and 3.36g sodium bicarbonate (NaHCO3). The pH was controlled at 5.6-5.8, and the EC at 1.39-1.41.

[0027] 5) For the preferred (K2Ca1) fertilizer solution, after pruning the cut roses, add 2.5g of potassium nitrate (KNO3), 3.36g of potassium sulfate (K2SO4), 2.9g of potassium chloride (KCl), 4.1g of anhydrous calcium nitrate (Ca(NO3)2), and 6.3g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K2Ca1 group: potassium content is 2.5mmol / L, calcium content is 3.5mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and 6g of potassium dihydrogen phosphate (KH2PO4). 0.27g, chelated iron (EH-Fe6-Na) 2.8g, chelated manganese (ED-MnNa2) 0.08g, chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0028] 6) For the preferred K2Ca2 formula, after pruning cut roses, add 2.5g of potassium nitrate (KNO3), 3.36g of potassium sulfate (K2SO4), 2.9g of potassium chloride (KCl), 8.2g of anhydrous calcium nitrate (Ca(NO3)2), and 12.6g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K2Ca2 group: potassium content is 2.5mmol / L, calcium content is 4.0mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and 6g of potassium dihydrogen phosphate (KH2PO4). 0.027g, chelated iron (EH-Fe6-Na) 2.8g, chelated manganese (ED-MnNa2) 0.08g, chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0029] 7) For the preferred K2Ca3 fertilizer, after pruning cut roses, add 2.5g of potassium nitrate (KNO3), 3.36g of potassium sulfate (K2SO4), 2.9g of potassium chloride (KCl), 12.3g of anhydrous calcium nitrate (Ca(NO3)2), and 18.9g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K2Ca3 group: potassium content is 2.5mmol / L, calcium content is 4.5mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and 6g of potassium dihydrogen phosphate (KH2PO4). 0.027g, chelated iron (EH-Fe6-Na) 2.8g, chelated manganese (ED-MnNa2) 0.08g, chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0030] 8) For the preferred (K3Ca1) fertilizer solution, after pruning cut roses, add 3.76g of potassium nitrate (KNO3), 5.06g of potassium sulfate (K2SO4), 4.36g of potassium chloride (KCl), 4.1g of anhydrous calcium nitrate (Ca(NO3)2), and 6.3g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K3Ca1 group: potassium content is 3.0mmol / L, calcium content is 3.5mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and 6g of potassium dihydrogen phosphate (KH2PO4). 0.027g, chelated iron (EH-Fe6-Na) 2.8g, chelated manganese (ED-MnNa2) 0.08g, chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0031] 9) For the preferred (K3Ca2) fertilizer solution, after pruning cut roses, add 3.76g of potassium nitrate (KNO3), 5.06g of potassium sulfate (K2SO4), 4.36g of potassium chloride (KCl), 8.2g of anhydrous calcium nitrate (Ca(NO3)2), and 12.6g of calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) to the above fertilizer solution (K3Ca2 group: potassium content is 3.0mmol / L, calcium content is 4.0mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g of calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g of potassium nitrate (KNO3), and potassium dihydrogen phosphate (KH2PO4). 6.027g, chelated iron (EH-Fe6-Na) 2.8g, chelated manganese (ED-MnNa2) 0.08g, chelated zinc (ED-ZnNa2) 0.08g, chelated copper (ED-CuNa2) 0.04g, sodium molybdate dihydrate (Na2MoO4·2H2O) 0.02g, boric acid (H3BO3) 0.12g, calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) 0.04g, calcium sulfate (CaSO4) 6.787g, ammonium dihydrogen phosphate (NH4H2PO4) 2.067g, magnesium sulfate heptahydrate (MgSO4·7H2O) 48.987g, sodium bicarbonate (NaHCO3) 3.36g. pH controlled at 5.6-5.8, EC at 1.39-1.41.

[0032] 10) The preferred (K3Ca3) fertilizer solution, after pruning cut roses, is supplemented with the following: 3.76g potassium nitrate (KNO3), 5.06g potassium sulfate (K2SO4), 4.36g potassium chloride (KCl), 12.3g anhydrous calcium nitrate (Ca(NO3)2), and 18.9g calcium dihydrogen phosphate (Ca(H2PO4)2·H2O) (K3Ca3 group: potassium content 3.0mmol / L, calcium content 4.5mmol / L). The formula is as follows: per 100L of fertilizer solution, add 58.36g calcium nitrate tetrahydrate (Ca(NO3)2·4H2O), 10.707g potassium nitrate (KNO3), and 18.9g potassium dihydrogen phosphate (KH2PO4). The following ingredients were used: 6.027g chelated iron (EH-Fe6-Na), 2.8g chelated manganese (ED-MnNa2), 0.08g chelated zinc (ED-ZnNa2), 0.04g chelated copper (ED-CuNa2), 0.02g sodium molybdate dihydrate (Na2MoO4·2H2O), 0.12g boric acid (H3BO3), 0.04g calcium dihydrogen phosphate (Ca(H2PO4)2·H2O), 6.787g calcium sulfate (CaSO4), 2.067g ammonium dihydrogen phosphate (NH4H2PO4), 48.987g magnesium sulfate heptahydrate (MgSO4·7H2O), and 3.36g sodium bicarbonate (NaHCO3). The pH was controlled at 5.6-5.8, and the EC at 1.39-1.41.

[0033] Data statistics and analysis: 1. Effects of different potassium, calcium, and fertilizers on the axillary bud development stage of cut roses 2. Effects of different potassium, calcium, and fertilizers on the growth rate of cut roses during the vegetative growth stage. 3. Effects of different potassium, calcium, and fertilizers on the budding stage of cut roses 4. Effects of different potassium, calcium, and fertilizers on the size of cut rose flowers and the length of branches. Example:

[0034] After the last rose harvest, retain one bud from bottom to top on each branch and remove the compound leaves growing from the axillary buds. Each experimental group consisted of 48 seedlings. Fertilizer was applied using a drip irrigation method, with an average frequency of 5-7 applications per day, each lasting 3-4 minutes. Specific application times depended on the temperature and light conditions of the day.

[0035] test: Using the cut rose 'Pink Snow Mountain' from the Baofeng Base of the Yunnan Academy of Agricultural Sciences Flower Research Institute as experimental material, 40 plants of similar size and quality were selected, divided into 10 groups of 4 plants each, and marked.

[0036] Treatment Group 1: The fertilizer prepared in Treatment Group 1 was selected; the fertilizer was applied using a drip irrigation method.

[0037] Treatment Group 2: The fertilizer prepared in Treatment Group 2 was selected; the fertilizer was applied using a drip irrigation method.

[0038] Treatment Group 3: The fertilizer prepared in Treatment Group 3 was selected and applied using a drip irrigation method.

[0039] Treatment Group 4: The fertilizer prepared in Treatment Group 4 was selected; the fertilizer was applied using a drip irrigation method.

[0040] Treatment Group 5: The fertilizer prepared in Treatment Group 5 was selected; the fertilizer was applied using a drip irrigation method.

[0041] Treatment Group 6: Select the fertilizer prepared in Treatment Group 6; apply the fertilizer using the drip irrigation method.

[0042] Treatment Group 7: Select the fertilizer prepared in Treatment Group 7; apply the fertilizer using the drip irrigation method.

[0043] Treatment Group 8: Select the fertilizer prepared in Treatment Group 8; apply the fertilizer using the drip irrigation method.

[0044] Treatment Group 9: Select the fertilizer prepared in Treatment Group 9; apply the fertilizer using the drip irrigation method.

[0045] Treatment Group 10: Select the fertilizer prepared in Treatment Group 10; apply the fertilizer using the drip irrigation method.

[0046] The pruning and fertilization of the above groups took place on the afternoon of May 1, 2025, under sunny skies. Fertilization was designated as day 0. Photos were taken on days 0, 1, 2, 3, 4, 5, 6, 7, 8, 9, 10, 15, 20, and 25. Harvesting and photography were also conducted on June 20.

[0047] like Figure 1 As shown: Treatment group 1 served as the control group and had the worst growth rate and quality. Treatment 5 had the fastest growth rate and, under the same potassium ion concentration, the best growth conditions were K2Ca1, i.e., potassium ion concentration of 2.0 mmol / L and calcium ion concentration of 3.5 mmol / L.

[0048] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, and not to limit them; although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. A method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions, characterized in that, After pruning cut roses, apply fertilizer with a potassium ion concentration of 1.5-3.0 mmol / L and a calcium ion concentration of 3.0-4.5 mmol / L.

2. The method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions according to claim 1, characterized in that, When pruning cut roses, leave one bud at each rose bush cut to concentrate nutrients and ensure that the bud receives sufficient nutrition, thus promoting successful sprouting.

3. The method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions according to claim 2, characterized in that, After pruning roses, remove the leaves at the bud points to reduce the inhibition of bud points by abscisic acid in the leaves, thereby promoting the rapid growth of bud points.

4. The method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions according to any one of claims 1-3, characterized in that, When the first batch of cut flower mother branches reach the harvesting stage, select flower branches with a thickness greater than 0.8 cm and cut them 1.0 cm above the first bud from bottom to top.

5. The method for promoting the growth of axillary buds in cut roses by applying appropriate concentrations of potassium and calcium ions according to claim 4, characterized in that, After the previous batch of roses is harvested, apply fertilizer with a potassium ion concentration of 1.5-3.0 mmol / L and a calcium ion concentration of 3.0-4.5 mmol / L.

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