CN111684975A - Root control method for Chinese tallow tree container seedlings - Google Patents

Abstract

The invention discloses a root control method of sapium sebiferum container seedlings, and belongs to the technical field of sapium sebiferum seedling cultivation. When sapium sebiferum seedling is cultivated in a container, the root control reagent is mixed with the emulsion paint and then is coated in the container and at the bottom. The method has good promotion effect on the aspects of Chinese tallow container seedling height, ground diameter, height-diameter ratio, biomass, root growth and the like; moreover, the root control reagents with different concentrations have inconsistent promotion effects on the container seedlings, and the root control reagents with medium concentrations have the most obvious promotion effect on the container seedlings and are the best choice.

Description

A kind of root control method of black tallow container seedling

technical field

The invention belongs to the technical field of tallow seedling cultivation, in particular to a root control method for tallow container seedlings.

Background technique

Tallow is a deciduous tree of Euphorbiaceae and Tallow genus. Tallow is a color-leaf tree species. Its leaves are red and dazzling in spring and autumn. It does not fall under the red maple. It is a unique economic tree species in China and has a cultivation history of more than 1,400 years. Tallow has strong adaptability to soil. It can be used in red soil, yellow soil, tan soil, purple soil, brown soil and other soils, soils with different textures from sandy to sticky, as well as acidic, neutral or slightly alkaline soils. It is one of the tree species with strong salt resistance. Tallow requires high soil moisture and can tolerate short-term water accumulation. At the same time, it has certain wind resistance and drought resistance. In addition, tallow has strong resistance to toxic hydrogen fluoride gas.

Black tallow has economic and horticultural value. The wax on the seed coat is called "tallow wax", which can be used to produce "skin oil" for the production of high-grade soap, wax paper, candles, etc.; the oil extracted from the seeds is called "tallow oil" or "tallow oil". Green oil" is used for paints, inks, etc., and the arils are the raw materials for candles and soaps, with extremely high economic value. Its wood material is excellent, and it is also an important wood species. The tallow tree has a beautiful shape and bright red leaves in spring and autumn, which has a high ornamental value.

Container seedling is a very effective way of raising tallow seedlings, but the mastery of root control technology in the process of container seedling is the key to ensuring the quality of seedlings, which affects the growth quality of seedlings and the survival rate of afforestation.

SUMMARY OF THE INVENTION

Aiming at the problems existing in the prior art, the technical problem to be solved by the present invention is to provide a root control method for the container seedlings of black tallow, which is effective for the height, ground diameter, height-diameter ratio, biomass and root growth of the container seedlings of black tallow. It has a good promoting effect in terms of stimuli; and the medium concentration of root control agent has the most obvious promoting effect on container seedlings, which is the best choice.

In order to solve the above problems, the technical scheme adopted in the present invention is as follows:

The invention discloses a root control method for tallow seedlings in a container. When the tallow seedlings are raised in a container, a root control agent is mixed with a latex paint, and then painted on the inside and the bottom of the tallow non-woven seedlings container.

In the method for root control of tallow container seedlings, the root control reagent is copper carbonate or zinc chloride.

In the method for root control of tallow container seedlings, the concentration of the root control agent is 60-180 g/L.

In the method for root control of tallow container seedlings, the concentrations of the root control reagent are 60g/L, 120g/L and 180g/L.

In the method for root control of tallow container seedlings, the concentration of the root control reagent is 120 g/L.

In the method for root control of tallow container seedlings, the container has a diameter of 11-13 cm and a height of 18-20 cm.

Beneficial effects: Compared with the existing technology, the advantages of the present invention include:

In the invention, the root-controlling agent copper carbonate or zinc chloride is mixed with latex paint and then painted on the inside and bottom of the seedling raising container, and the operation is convenient, and the seedling height, ground diameter, height-diameter ratio, biomass and root growth etc. In addition, the effect of different concentrations of root control agent on container seedlings is inconsistent, and the medium concentration of root control agent has the most obvious promoting effect on container seedlings, which is the best choice.

Detailed ways

In order to make the above objects, features and advantages of the present invention more clearly understood, the specific embodiments of the present invention will be described in detail below with reference to specific embodiments.

Example 1

The root control test of the tallow container seedling root control reagent, tallow is a broad-leaved tree, the size of the seedling is large (annual seedling height is usually above 80cm), it is relatively resistant to water and humidity, and the main root of the seedling is not strong.

Two root control reagents were used in the experiment, and there were 6 treatment groups and 1 control group (Table 1). The treatment group was painted with latex paint containing the corresponding root-controlling agent on the inner wall and bottom of the container, while the control group was only painted with latex paint; non-woven containers with a size of 10cm×20cm (diameter×height) were used for experiments in each group. Three replicates were set for each treatment, with 30 seedlings per replicate, and the container seedlings were grown in the same container and substrate. The experiment started on June 22, 2018, and the leaves of black tallow were harvested on November 22, ending the experiment.

Table 1 Chemical root control test treatment

deal with Copper carbonate concentration Zinc chloride concentration CK 0 0 T₁ 60g/L 0 T₂ 120g/L 0 T₃ 180g/L 0 T₄ 0 60g/L T₅ 0 120g/L T₆ 0 180g/L

1) Effects of root control reagents on the height, ground diameter and height-diameter ratio of tallow container seedlings

The effects of different chemical reagents on the seedling height, ground diameter and height-diameter ratio of tallow container seedlings are shown in Table 2. The order of seedling height from large to small is T ₅ > T ₂ > T ₃ , T ₆ , T ₄ > T ₁ > CK, and each treatment was significantly different from the control (P<0.05), among which the seedling height of T ₂ and T ₅ treatments was significantly better than that of other treatments, indicating that the treatment with medium concentrations of copper carbonate and zinc chloride had a significant effect on the effect of tallow container seedlings. Seedling height grows best.

The ground diameters from large to small were T ₅ >T ₂ , T ₄ > T ₃ , T ₆ >T ₁ >CK, and there was significant difference between the treatments and the control (P<0.05), among which the ground diameter of T ₅ was significantly better than that of the control. Other treatments indicated that the medium concentration of zinc chloride treatment had the best effect on the growth of the ground diameter of the container seedlings of black tallow.

The height-diameter ratios were T ₆ , T ₃ , T ₅ > T ₂ , T ₄ > T ₁ > CK in descending order, and the difference between each treatment and the control was significant (P < 0.05). The control group was significantly better than other treatments. The reason is that the chemical reagent promotes the growth of the seedling height of the tallow container while promoting the growth of the seedling diameter, and the promotion of the height of the seedling is stronger than that of the diameter of the ground, thus causing the ratio of the height of the seedling to the diameter of the ground. significantly higher than the control group.

Table 2 Effects of different chemical reagent treatments on seedling height, ground diameter and height-diameter ratio of tallow container seedlings

deal with Seedling height (cm) Ground diameter (mm) Height to diameter ratio CK 51.13±1.90d 7.72±0.23d 66.30±1.90c T₁ 61.47±2.24c 8.42±0.26cd 73.00±1.48b T₂ 75.87±2.78ab 9.78±0.34ab 78.04±2.04ab T₃ 73.07±2.66b 9.07±0.26bc 80.88±2.62a T₄ 72.33±1.96b 9.36±0.23ab 77.58±1.94ab T₅ 81.67±3.26a 10.22±0.39a 80.43±2.51a T₆ 72.73±1.73b 8.95±0.40bc 83.05±3.40a

Note: Lowercase letters in the full text represent significant differences at the 0.05 level, and the same letters indicate insignificant differences.

2) The effect of chemical reagents on the biomass of tallow container seedlings

The effects of different chemical reagent treatments on the biomass of each part of Tallow tallow container seedlings are shown in Table 3. The biomass of the aerial parts from large to small is T ₅ >T ₄ , T ₂ , T ₃ > T ₆ > T ₁ > CK, The biomass of the underground part from large to small was T ₅ >T ₄ , T ₆ , T ₂ > T ₃ > T ₁ > CK, and the difference between each treatment and the control was significant (P < 0.05). Among them, the biomass of the above-ground part of T ₅ And the biomass of the underground part was significantly better than other treatments, indicating that the medium concentration of zinc chloride had the best effect on the growth of the aerial part and the underground part of the container seedlings of black tallow. Although there was no significant difference in the biomass of fibrous roots among the treatments, the chemical reagent treatments were all higher than the control.

The root-to-shoot ratio from large to small was CK>T ₁ >T ₆ >T ₅ , T ₂ , T ₄ , T ₃ , and the control was significantly higher than other treatments (P<0.05). Both the above-ground and underground parts of Tallow container seedlings promoted biomass, but the promotion of the above-ground parts was stronger than that of the underground parts, so the rhizome ratio of the control group was significantly better than that of the chemical reagent-treated group.

Table 3 Effects of different chemical reagent treatments on the biomass of tallow container seedlings

deal with Above ground part (g) Underground part (g) fibrous root(g) rhizome ratio CK 3.83±0.38d 4.28±0.34c 0.161±0.024a 1.16±0.07a T₁ 6.53±0.76cd 6.24±1.07bc 0.270±0.037a 0.94±0.07b T₂ 10.14±1.47ab 7.31±1.18ab 0.212±0.036a 0.73±0.04c T₃ 9.98±0.91ab 6.78±0.83abc 0.186±0.028a 0.67±0.04c T₄ 10.87±1.00ab 7.74±0.70ab 0.164±0.027a 0.72±0.04c T₅ 12.62±1.53a 9.40±1.12a 0.270±0.050a 0.76±0.05c T₆ 8.88±0.74bc 7.48±0.85ab 0.255±0.044a 0.84±0.07bc

3) The effect of chemical reagents on the root morphological index of tallow container seedlings

Table ₄ shows the effects _of different chemical reagent treatments _on the root morphological indexes _{of Tallow} tallow container seedlings _. The difference between each treatment and the control was significant (P<0.05), indicating that copper carbonate and zinc chloride had the function of promoting the increase of the number of primary lateral roots of tallow container seedlings. Among them, the number of primary lateral roots in the treatment of zinc chloride with a concentration of 120g/L and copper carbonate with a concentration of 60g/L was significantly higher than that of other treatments, followed by copper carbonate with a concentration of 120g/L and chloride with a concentration of 60g/L. Zinc treatment, the concentration of 180g/L copper carbonate and zinc chloride treatment is the worst, indicating that the medium concentration of zinc chloride and low concentration of copper carbonate are more conducive to the production of primary lateral roots of black tallow container seedlings, while high concentrations of chemical reagents The promotion effect of primary lateral roots of black tallow container seedlings was small.

The total root length from large to small was T ₅ >T ₁ , T ₆ , T ₂ , T ₃ , T ₄ > CK, and the difference between each treatment and the control was significant (P < 0.05), indicating that copper carbonate and zinc chloride have increased The function of total root length of tallow container seedlings. Among them, the total root length of the zinc chloride treatment with a concentration of 120 g/L was significantly higher than that of other treatments, indicating that the medium concentration of zinc chloride had the best promoting effect on the total root length of tallow container seedlings.

The root surface area from large to small was T ₅ >T ₆ , T ₂ , T ₁ > T ₄ , T ₃ > CK, and there was a significant difference between the treatments and the control (P < 0.05), indicating that copper carbonate and zinc chloride had increased The role of root surface area of Tallow tallow container seedlings. Among them, the root surface area of zinc chloride treatment with a concentration of 120 g/L was the largest.

The total root volume in descending order is T ₅ >T ₄ , T ₆ > T ₂ , T ₁ , T ₃ > CK, and the difference between each treatment and the control is significant (P < 0.05), indicating that copper carbonate and zinc chloride have The effect of increasing the total volume of the root system of tallow container seedlings. Among them, the total root volume of the zinc chloride treatment with a concentration of 120g/L is the largest, followed by the treatment of zinc chloride with a concentration of 60g/L and zinc chloride with a concentration of 180g/L, indicating that zinc chloride is more conducive to the root volume of tallow container seedlings of increase. And whether it is zinc chloride or copper carbonate, the medium concentration is more conducive to the increase of the root volume of tallow container seedlings.

Table 4 Effects of different chemical reagent treatments on root morphological indexes of Tallow tallow container seedlings

deal with Number of primary lateral roots (strips) Total root length (cm) Root surface area (cm²) Root volume (cm³) CK 2.44±0.38c 293.08±35.16b 148.24±5.84c 5.34±0.22c T₁ 5.67±0.65a 384.72±18.50ab 184.59±10.40b 6.77±0.57bc T₂ 4.56±0.44ab 367.61±31.16ab 188.07±16.55b 7.91±1.03bc T₃ 3.44±0.75bc 365.61±30.62ab 166.42±5.54bc 6.41±0.63bc T₄ 4.56±0.53ab 337.24±38.31ab 176.76±11.60bc 9.19±1.15ab T₅ 5.89±0.77a 425.07±45.40a 225.68±13.04a 10.88±1.20a T₆ 3.78±0.60bc 379.73±46.15ab 192.10±10.18b 8.38±1.01ab

When the tallow container seedlings of the present invention use chemical reagents for root control, both copper carbonate and zinc chloride are beneficial to the growth of tallow seedlings and the optimization of root system morphology, and the zinc chloride with a concentration of 120 g/L has the best effect on the inner wall of the container. Comprehensive seedling growth parameters, compared with the control group, the 120g/L zinc chloride treatment increased the seedling height by 59.73%, the ground diameter by 32.38%, the aboveground biomass by 8.79g, and the underground biomass by 8.79g. 5.12g, the fibrous root biomass increased by 67.70%. According to the root parameters, compared with the control group, the 120g/L zinc chloride treatment increased the number of primary lateral roots by 3.45 on average, the total root length by 45.04%, the root surface area by 52.24%, and the root volume by 103.75%.

Claims (6)

1. A root control method for sapium sebiferum seedlings in containers is characterized in that when sapium sebiferum seedlings are cultured in containers, a root control reagent is mixed with emulsion paint and then coated inside and at the bottom of a non-woven fabric seedling culture container.

2. The root control method of Chinese tallow tree seedlings according to claim 1, wherein the root control reagent is copper carbonate or zinc chloride.

3. The root control method of the Chinese tallow tree seedlings according to claim 1 or 2, wherein the concentration of the root control reagent is 60-180 g/L.

4. The root control method of Chinese tallow tree seedling of claim 1 or 2, wherein the concentration of the root control reagent is 60g/L, 120g/L, 180 g/L.

5. The root control method of Chinese tallow tree seedlings according to claim 1 or 2, wherein the concentration of the root control reagent is 120 g/L.

6. The root control method of a sapium sebiferum container seedling as claimed in claim 1 or 2, wherein the diameter of the container is 11-13 cm, and the height of the container is 18-20 cm.