CN112868499A

CN112868499A - Seedling culture medium for promoting growth of short-order Machilus thunbergii seedlings

Info

Publication number: CN112868499A
Application number: CN202110024628.5A
Authority: CN
Inventors: 丁岳炼; 王志云; 陈杰; 万利鑫; 谭家得; 张学平; 柯欢; 殷爱华; 李鑫; 周建瑛; 黄志雄; 陈锐
Original assignee: Foshan Institute Of Forestry Science Foshan Botanical Garden
Current assignee: Foshan Institute Of Forestry Science Foshan Botanical Garden
Priority date: 2021-01-08
Filing date: 2021-01-08
Publication date: 2021-06-01

Abstract

The invention relates to a seedling substrate for promoting growth of short-order Machilus thunbergii seedlings, which comprises the following components in parts by volume: 10-25 parts of yellow core soil, 40-70 parts of peat soil, 10-25 parts of coconut husk, 5-12 parts of perlite and 3-5 parts of organic fertilizer. The seedling raising substrate for promoting the growth of the short-order Machilus thunbergii seedlings can effectively promote the seedling height of the short-order Machilus thunbergii seedlings, and the seedling height is improved by about 12.7% -27.5%; the number of the leaves is increased by 10-20%; the ground diameter is increased by 13.8 to 24.1 percent; the survival rate of the transplanted seedlings reaches 100 percent. The seedling culture medium for promoting the growth of the short-order Machilus thunbergii seedlings solves the problem of low natural fertility of the short-order Machilus thunbergii, expands the distribution range of the short-order Machilus thunbergii, and can be planted in a large scale and popularized and applied.

Description

Seedling culture medium for promoting growth of short-order Machilus thunbergii seedlings

Technical Field

The invention relates to a seedling raising substrate for promoting growth of short-order Machilus thunbergii seedlings, and belongs to the technical field of seedling raising materials.

Background

The short-sequence Machilus breviflora (Machilus breviflora) belongs to Lauraceae (Rosaceae) evergreen trees, the trees are upright and beautiful, the trunks are straight and upright, the four seasons are evergreen, the branches and leaves of the crowns are dense, the branches are in layered extension, particularly, the tender leaves in spring are red and bright, the whole tree has red leaves, the appearance is extremely attractive, the obvious seasonal characteristics are realized, the short-sequence Machilus breviflora (Machilus breviflora) can be used as color-leaf tree species, can also be used as garden ornamental tree species and urban greening sidewalk trees, and is an excellent rural tree species with great development and application potential in south China.

The wild species of the tree has a narrow distribution range, is mainly distributed in places such as Guangdong, Hainan, Guangxi, hongkong and the like, is favored to grow in sunny places of high mountain dwarf forests, and researches on places such as Guangdong Zhaoqing Dinghu mountain, Sanshui Danan mountain and the like show that the natural propagation seedlings under the forest of the tree species are few, and the sources of the seedlings are few, so the tree species are not planted and popularized and applied on a large scale. After the seeds are picked and sowed at any time, the germination time lasts longer, after the seeds germinate, the seeds are transplanted and bagged, the growth recovery period is slower, the problems of irregularity and low survival rate easily occur in the growth at the seedling stage, and the reason is mainly greatly influenced by the seedling culture medium for the growth of the short-sequence Machilus thunbergii.

Disclosure of Invention

Technical problem to be solved

In order to solve the problems in the prior art, the invention provides a seedling raising substrate for promoting the growth of short-order machilus pauhoi seedlings, and provides possibility for efficient breeding, popularization and application of the short-order machilus pauhoi.

(II) technical scheme

In order to achieve the purpose, the invention adopts the main technical scheme that:

a seedling raising substrate for promoting growth of short-order Machilus thunbergii seedlings comprises the following components in parts by volume: 10-25 parts of yellow core soil, 40-70 parts of peat soil, 10-25 parts of coconut husk, 5-12 parts of perlite and 3-5 parts of organic fertilizer.

The seedling raising substrate is preferably 10-15 parts of yellow core soil, 50-60 parts of peat soil, 20-25 parts of coconut coir, 5-10 parts of perlite and 5 parts of organic fertilizer.

The seedling substrate is characterized in that 15 parts of yellow core soil, 50 parts of peat soil, 20 parts of coconut coir, 10 parts of perlite and 5 parts of organic fertilizer are preferably selected.

The application of the seedling culture medium for promoting the growth of the short-order Machilus thunbergii seedlings in promoting the growth of the short-order Machilus thunbergii seedlings is provided.

The application is that the seedling substrate is covered with a plastic film for 1 week and then used for planting short-sequence Machilus thunbergii seedlings.

(III) advantageous effects

The invention has the beneficial effects that:

the seedling raising substrate for promoting the growth of the short-order Machilus thunbergii seedlings can effectively promote the seedling height of the short-order Machilus thunbergii seedlings, and the seedling height is improved by about 12.7% -27.5%; the number of the leaves is increased by 10-20%; the ground diameter is increased by 13.8-24.1%, and the survival rate of the transplanted seedlings reaches 100%. The seedling culture medium for promoting the growth of the short-order Machilus thunbergii seedlings solves the problem of low natural fertility of the short-order Machilus thunbergii, expands the distribution range of the short-order Machilus thunbergii, and can be planted in a large scale and popularized and applied.

Drawings

FIG. 1 shows the effect of different substrate treatments on SPAD values of leaves of short-sequenced Machilus thunbergii seedlings.

Detailed Description

For the purpose of better explaining the present invention and to facilitate understanding, the present invention will be described in detail by way of specific embodiments with reference to the accompanying drawings.

Example 1

The short-sequence Machilus thunbergii test nursery stock seeds adopted in the embodiment are collected from a Machilus thunbergii nursery field in Zhaoqing Guangdong, and are sown in sand bed in 5 months in 2017 in a nursery garden of forestry scientific research institute in Foshan city. After the seeds germinate, the seedlings are about 3-5cm high for seedling transplanting and bagging test. The quality of the seedlings is reflected according to indexes such as height, ground diameter, crown width, root system and the like of the seedlings, the growth condition of the seedlings is mainly determined according to the amount of biomass accumulation, and the physicochemical property of the matrix has great influence on the growth and development of plants. After a large number of experiments, the inventor determines that peat soil, coconut chaff, perlite and organic fertilizer are preferably selected as matrix components for cultivating the short-sequence Machilus thunbergii.

The peat soil, the coconut chaff, the perlite and the organic fertilizer selected by the embodiment can be purchased in Guangzhou Fangcun flower markets, and the yellow core soil can be used in a nursery garden of Foshan Linke.

The test is carried out in the forestry scientific research institute (N23 degree 06 '50.31', E113 degree 0 '1.19') of Fushan City in Guangdong province, the seedling substrate is divided into 13 treatments, and the specific proportion is shown in Table 1.

The matrix is prepared and mixed evenly according to a proportion, the natural wet compost is covered by a plastic film for 1 week, then the natural wet compost is loaded into degradable non-woven seedling bags (the specification is 12 multiplied by 13cm), the quantity of the matrix loaded in each seedling bag is consistent, and the matrix is marked and distinguished. And in 10 months in 2017, selecting seedlings which are robust in growth, free of diseases and insect pests and basically consistent in seedling height, randomly planting the seedlings in seedling bags, and culturing in a shed, wherein the same tending management measures are adopted for 13 treatments.

TABLE 1 treatment types and volume ratios of different substrates

Indexes of (1) growth amount, (2) biomass, and (3) leaf chlorophyll (SPAD value) of the short-sequence Machilus thunbergii in 4 months in 2018 are measured.

Wherein, (1) the growth amount comprises the height of the seedling, the ground diameter, the height-diameter ratio, the length of the main root, the number of the side roots and the number of the leaves, and the measuring method comprises the following steps: from each treatment, 10 normal growing seedlings were randomly selected, the height (cm) and the crown width (cm) of the seedlings were measured with a steel tape (accuracy 0.1cm), and the number of leaves of the seedlings to be measured was measured. And cutting a container bag of each substrate (paying attention to ensure the integrity of the root system), washing with distilled water, wiping with filter paper slightly, measuring the length of the main root and the length of the lateral roots by using a steel tape, and measuring the total number of the root tips.

The data obtained by the measurement were analyzed using Microsoft Excel 2007 and SPSS 22.0 software, and the results are shown in table 2.

TABLE 2 influence of different substrates on seedling height, ground diameter, height-diameter ratio, main root length, side root number, leaf number

The results show that the effect of different matrix treatments on the seedling height is significantly different, wherein the seedling height is the highest when M13 is treated, the lowest when M7 and M9 are treated, and the lowest when M3 is treated; the ground diameter is M13 highest and M9 times; m3 lowest; the main root length is M3 highest, M11 second highest and M4 lowest; the number of lateral roots is M11 highest, M6 and M10 times; the leaf numbers were shown to be the highest with M13 and the lowest with M3.

The seedling height shows that the difference between M3 and M10 is not significant (P >0.05), but is significantly different from other groups, and in total, the differences between M1, M2, M4, M5, M7, M8, M9, M11 and M12 are not significant; the number of leaves treated in groups M2, M3, M4, M5, M8 was significantly different from the treatment in the other groups.

(2) The growth amount is carried out by adopting the following method: the above-ground part and the underground part of each group are cut and separated by scissors, the fresh weight of the above-ground part and the fresh weight of the underground part are weighed by an electronic analytical balance (the precision is 0.0001g), and the dry weight of the above-ground part and the dry weight of the underground part are weighed, and each group is repeated for 10 times. The specific method comprises the following steps: washing the treated seedlings with deionized water, slightly absorbing surface water with filter paper, measuring fresh weight, putting the seedlings into envelopes, deactivating enzyme at 110 ℃ for 40 minutes in a constant temperature air blast oven, drying at 80 ℃ to constant weight, and weighing dry weight of the seedlings respectively. The total dry mass of the single plant is the dry mass of the stem and leaf of the single plant plus the dry mass of the root of the single plant; the root-crown ratio is the dry mass of a single root/the dry mass of a single stem and leaf; the height-diameter ratio is equal to the plant height/ground diameter; quality index of nursery stock is total dry mass of single plant/((plant height/ground diameter) + (dry mass of single stem and leaf/dry mass of single root))

The data obtained by the measurement were analyzed using Microsoft Excel 2007 and SPSS 22.0 software, and the results are shown in table 3.

TABLE 3 Effect of different substrate treatments on Biomass

(3) Determination of SPAD value: and (4) measuring the relative content of chlorophyll in the leaves in real time by adopting a portable chlorophyll meter. The number of terminal buds of each seedling is 4-6 leaves, and each group is repeated for 6.

The data obtained by the measurement were analyzed using Microsoft Excel 2007 and SPSS 22.0 software, and the results are shown in fig. 1. As can be seen from fig. 1, the SPAD values of the blades differ from treatment to treatment, with the SPAD value number treatment M9 being the highest and very significantly different from the other treatment groups; the SPAD values of the treatments of M11, M12, M13, etc. are the second order; the SPAD value of M3 was the lowest. The results show that the M9 treatment group matrix formulation provided significant leaf SPAD values.

From the above, when the substrate prepared from 10-15 parts of peat soil, 50-60 parts of peat soil, 20-25 parts of coconut coir, 5-10 parts of perlite and 5 parts of organic fertilizer is used for cultivating short-order machilus nannieri, the seedling height is improved by 12.7% -27.5%; the number of the leaves is increased by 10-20%; the ground diameter is increased by 13.8-24.1%, the growth vigor is better than that of the method of singly adopting the yellow core soil and the organic fertilizer, the short-order Machilus thunbergii can not be limited by the region, the planting range is expanded, and the distribution range is expanded.

The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention in other forms, and any person skilled in the art can change or modify the technical content disclosed above into an equivalent embodiment with equivalent changes. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.

Claims

1. A seedling raising substrate for promoting growth of short-order Machilus thunbergii seedlings is characterized by comprising the following components in parts by volume: 10-25 parts of yellow core soil, 40-70 parts of peat soil, 10-25 parts of coconut husk, 5-12 parts of perlite and 3-5 parts of organic fertilizer.

2. A seedling raising substrate according to claim 1, wherein the loess is 10 to 15 parts, the peat soil is 50 to 60 parts, the coconut coir is 20 to 25 parts, the perlite is 5 to 10 parts, and the organic fertilizer is 5 parts.

3. A seedling raising substrate according to claim 1, wherein the yellow core soil is 15 parts, the peat soil is 50 parts, the coconut coir is 20 parts, the perlite is 10 parts, and the organic fertilizer is 5 parts.

4. Use of the seedling raising substrate for promoting growth of short-order Machilus thunbergii seedlings as claimed in any one of claims 1 to 3 for promoting growth of short-order Machilus thunbergii seedlings.

5. The use of claim 4, wherein the substrate is covered with plastic film for 1 week before being used for planting Machilus brachypnea.