Method for improving propagation survival rate of lotus rhizome whips through symbiotic seedling hardening

Abstract

The invention relates to the technical field of agricultural and horticultural cultivation, and discloses a method for improving the propagation survival rate of lotus rhizome rhizomes through symbiotic seedling hardening, which comprises the following steps: digging out lotus rhizome rhizomes, carrying out symbiotic growth of lotus rhizome rhizomes and a parent body, hardening the seedlings to grow, cutting grown seedlings from the parent body, planting lotus rhizome rhizome seedlings and carrying out subsequent growth period management. Therefore, the tender lotus rhizome whips can continuously obtain nutrition and resistance of the parent body and grow well; meanwhile, the lotus rhizome rhizomes leave the soil and are exposed in the air, so that the lotus rhizome rhizomes are exercised and hardened and can better adapt to transplanting and planting; the method can be directly applied to lotus potting and field cultivation, and a corresponding planting method is established, so that the problem of low planting survival rate of the lotuses in the growth period is solved, and the breeding survival rate of the lotus rhizome whips reaches 100%.

Description

Technical Field

[0001] The invention relates to the technical field of agricultural horticulture cultivation, and in particular to a method for improving the survival rate of lotus root whip reproduction by symbiotic seedling hardening. Background Art

[0002] Lotus asexual reproduction, the commonly used propagation bodies in production are lotus root and lotus root whip. In early spring from March to April, lotus root is usually used for reproduction, such as a micro lotus root propagation method with application number 201010552989.9, which overcomes the shortcomings of conventional lotus root propagation, such as slow speed, large size, and inconvenient transportation, and miniaturizes lotus root seedlings, which is convenient for transportation and farmers to plant in the field. In the lotus growing season, if reproduction is needed, lotus root whip is used.

[0003] Lotus root whip propagation is of great significance in landscaping projects, because the construction period of garden projects is often inconsistent with the normal propagation period of lotus. Lotus root whip propagation can solve this problem well. The so-called lotus root whip is the tender stem after the buds on the lotus root grow. Because it is very tender, it is easy to be injured and die during planting, and the survival rate is not high, generally 30%-50%. Therefore, it is urgent to develop a method that can improve the survival rate of lotus root whip propagation. Summary of the invention

[0004] In view of the shortcomings of the prior art, the purpose of the present invention is to provide a method for symbiotic seedling hardening to improve the survival rate of lotus root whip reproduction. The method can be directly applied to lotus potted plants and ground plantings, and corresponding planting methods can be established to solve the problem of low survival rate of lotus planting during the growth period, so that the survival rate of lotus root whip reproduction reaches 100%.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A method for improving the survival rate of lotus root whip reproduction by symbiotic seedling hardening comprises the following steps:

[0007] S1 Dig out the lotus root whip: Select the mother lotus root whip, follow the curled leaves of the mother lotus root whip with your fingers to break the roots on the nodes in the soil, hold the node with your hand and gently pull out the lotus root whip in the opposite direction of the curled leaf opening;

[0008] S2: The lotus root whips are symbiotically connected to the mother plant: the lotus root whips dug out in step S1 are kept connected to the mother plant, and are loosely tied with plastic bands and hung on the mature lotus petioles nearby;

[0009] S3 seedling hardening and growth: after step S2, the lotus root whip is removed from the soil and exposed to light for 5-7 days;

[0010] S4: cutting the mature seedlings from the mother plant: when the lotus root whip grown in step S3 grows to one leaf, two nodes and one bud, the lotus root whip becomes hard and is light green or pink, cutting the lotus root whip from the mother plant to obtain the lotus root whip seedling to be planted;

[0011] S5 Planting of lotus root whip seedlings: Keep a water depth of 3cm above the soil surface of the planting site, dig a shallow trench slightly longer than the seedling, and place the lotus root whip seedlings cut from the mother body in step S4 horizontally in the trench, with the large leaves of the lotus root whip exposed above the soil surface and the rest covered in the soil, to complete the planting.

[0012] Preferably, the period for digging out the lotus root whips in step S1 is from May to early August.

[0013] Preferably, the method for selecting the lotus root whip mother in step S1 is: selecting the mother that is still in the leaf curling stage, the direction of its leaf curling opening pointing to the direction of the lotus root whip growth, and the lotus root whip top bud has not yet grown leaves.

[0014] As a preferred method, it also includes growth period management, which specifically includes the following steps:

[0015] S61 Seedling Acceleration Period: No fertilizer is needed during the seedling acceleration period, and the water depth should be maintained at 3cm;

[0016] S62 floating leaf stage: Keep the water depth at 3-5 cm and add a small amount of compound fertilizer;

[0017] S63 leaf-standing stage: Apply compound fertilizer with a total content of N, P, and K of 45% once every 10 to 15 days. The fertilizer amount for potted plants is 1g to 3g / pot, and 13 kg / mu for ground planting. The fertilizer should not touch the leaves. Keep the water level and expose them to more sunlight.

[0018] S64 Flowering period: Fertilize potted plants according to the condition of the flowers during the flowering period. Apply fertilizer 13-15 kg / mu each time during the flowering period of ground planting. Pay attention to fill the pots with water for potted plants, and keep the water depth of 10 cm for ground planting to prevent dehydration from affecting growth or even death.

[0019] Preferably, the specific fertilization method of the potted plants during flowering period in step S64 is:

[0020] (1) Apply compound fertilizer once after the flower buds emerge from the water surface, with an application rate of 2g to 4g per pot;

[0021] (2) Fertilize once every 10 to 15 days during the flowering period, with an application rate of 2 to 3 g per pot;

[0022] (3) Fertilize once at the end of flowering period, with an application rate of 1g to 3g per pot.

[0023] The lotus root whip of the present invention does not leave the mother body at the beginning, so the young lotus root whip can continue to obtain nutrition and resistance from the mother body and grow well; at the same time, the lotus root whip leaves the soil and is exposed to the air, so that the lotus root whip is exercised and hardened, and can better adapt to transplantation and planting.

[0024] The present invention has significant technical effects due to the adoption of the above technical solution:

[0025] (1) The survival rate is high. The previous lotus root whip propagation method had a survival rate of 30%-50%, while the symbiotic seedling hardening method has a survival rate of 100%.

[0026] (2) Save time. The previous method of lotus root propagation required digging out two leaves, three nodes and one bud from the soil, which was very labor-intensive. The symbiotic seedling method only requires digging out one bud from the soil, which is easy to dig and saves time.

[0027] (3) It can be transported over long distances. Since the lotus root whip seedlings produced by the symbiotic seedling hardening method are hardened seedlings, they can also be transported outside, which provides convenience for the use of seedlings in garden projects, and the weight is also light. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is the state diagram of digging out the lotus root whip;

[0029] Figure 2 This is a diagram of the state of symbiosis between the hanging lotus root whip and the mother plant;

[0030] Figure 3 This is a state diagram of the lotus root whip in the seedling hardening growth stage;

[0031] Figure 4 This is a state diagram of the lotus root whip at the stage of being cut off from the mother body;

[0032] Figure 5 This is a diagram of the status of the lotus root after planting. DETAILED DESCRIPTION

[0033] The lotus referred to in the present invention belongs to the genus Nelumbo, family Nelumbo, and is a perennial aquatic herbaceous flower with a long and thick underground stem, long nodes, and rounded leaf shields. The flowering period is from June to September, solitary at the top of the pedicel, with a large number of petals embedded in the receptacle hole, in colors such as red, pink, white, purple-yellow, green, or with colored patterns and borders, and the nuts are oval and the seeds are ovate.

[0034] Example 1

[0035] Take the large lotus variety Pink King potted as an example, it includes digging out the lotus root whip, the symbiosis between the lotus root whip and the mother plant, hardening the seedlings, cutting the mature seedlings from the mother plant, planting the lotus root whip seedlings and subsequent growth period management;

[0036] S1 Dig out the lotus root whip: Select the mother lotus root whip, follow the curled leaves of the mother lotus root whip with your fingers to break the roots on the nodes in the soil, hold the node with your hand and gently pull out the lotus root whip in the opposite direction of the curled leaf opening;

[0037] S1 digging out the lotus root whip specifically includes the following steps:

[0038] (1) Digging lotus root whip period: May to early August;

[0039] (2) Identification of lotus root stems: Select stems that are still in the leaf curling stage, that is, the lotus leaves have not yet unfolded. At this time, the top buds of the lotus root stems in the soil have not yet grown leaves, and the lotus root stems are not easily damaged when dug out;

[0040] (3) The direction in which the lotus root whip grows in the soil: There is an opening on the lotus leaf, and the direction in which the opening points is the direction in which the lotus root whip grows in the soil;

[0041] (4) Dig out the lotus root whip: Use your fingers to break the roots on the nodes in the soil along the curled leaves, hold the nodes with your hands and gently pull out the lotus root whip in the opposite direction of the curled leaf opening;

[0042] S2: The lotus root whips are symbiotically connected to the mother plant: the lotus root whips dug out in step S1 are placed outside the pot and kept connected to the mother plant. Meanwhile, the lotus root whips are loosely tied with a plastic belt and hung on a nearby mature lotus petiole.

[0043] S3 seedling hardening and growth: after step S2, the lotus root whip is removed from the soil and exposed to light for 5-7 days. During the growth, the surface of the lotus root whip becomes hard, changes from white to green, the internodes become shorter, and the leaves become smaller. The lotus root whip is hardened during the 5-7 days of seedling growth and can better adapt to the new environment;

[0044] S4: cutting the mature seedlings from the mother plant: when the lotus root whip grown in step S3 grows to one leaf, two nodes and one bud, the lotus root whip becomes hard and is light green or pink, cutting the lotus root whip from the mother plant to obtain the lotus root whip seedling to be planted;

[0045] S5 Planting of lotus root whip seedlings: Keep a water depth of 3cm above the soil surface of the planting site, dig a shallow trench slightly longer than the seedling, and place the lotus root whip seedlings cut from the mother body in step S4 horizontally in the trench, with the large leaves of the lotus root whip exposed above the soil surface and the rest covered in the soil, to complete the planting.

[0046] Subsequent cultivation and management are the same as those of general potted lotus.

[0047] Example 2

[0048] Taking the medium-sized lotus variety, Water Lily, as an example, the process includes digging out the lotus root rhizomes, the symbiosis between the lotus root rhizomes and the mother plant, hardening the seedlings, cutting the mature seedlings from the mother plant, planting the lotus root rhizomes and subsequent growth management;

[0049] S1 Dig out the lotus root whip: Select the mother lotus root whip, follow the curled leaves of the mother lotus root whip with your fingers to break the roots on the nodes in the soil, hold the node with your hand and gently pull out the lotus root whip in the opposite direction of the curled leaf opening;

[0050] S1 digging out the lotus root whip specifically includes the following steps:

[0051] (1) Digging lotus root whip period: May to early August;

[0052] (2) Identification of lotus root stems: Select stems that are still in the leaf curling stage, that is, the lotus leaves have not yet unfolded. At this time, the top buds of the lotus root stems in the soil have not yet grown leaves, and the lotus root stems are not easily damaged when dug out;

[0053] (3) The direction in which the lotus root whip grows in the soil: There is an opening on the lotus leaf, and the direction in which the opening points is the direction in which the lotus root whip grows in the soil;

[0054] (4) Dig out the lotus root whip: Use your fingers to break the roots on the nodes in the soil along the curled leaves, hold the nodes with your hands and gently pull out the lotus root whip in the opposite direction of the curled leaf opening;

[0055] S2: The lotus root whips are symbiotically connected to the mother plant: the lotus root whips dug out in step S1 are placed outside the pot and kept connected to the mother plant. Meanwhile, the lotus root whips are loosely tied with a plastic belt and hung on a nearby mature lotus petiole.

[0056] S3 seedling hardening and growth: after step S2, the lotus root whip is removed from the soil and exposed to light for 5-7 days. During the growth, the surface of the lotus root whip becomes hard, changes from white to green, the internodes become shorter, and the leaves become smaller. The lotus root whip is hardened during the 5-7 days of seedling growth and can better adapt to the new environment;

[0057] S4: cutting the mature seedlings from the mother plant: when the lotus root whip grown in step S3 grows to one leaf, two nodes and one bud, the lotus root whip becomes hard and is light green or pink, cutting the lotus root whip from the mother plant to obtain the lotus root whip seedling to be planted;

[0058] S5 Planting of lotus root whip seedlings: Keep a water depth of 3cm above the soil surface of the planting site, dig a shallow trench slightly longer than the seedling, and place the lotus root whip seedlings cut from the mother body in step S4 horizontally in the trench, with the large leaves of the lotus root whip exposed above the soil surface and the rest covered in the soil, to complete the planting.

[0059] Subsequent cultivation and management are the same as those of general potted lotus.

[0060] Example 3

[0061] In Example 2, the planting of lotus root whips is completed and the growth period management is carried out, which specifically includes the following steps:

[0062] S61 Seedling Acceleration Period: No fertilizer is needed during the seedling acceleration period, and the water depth should be maintained at 3cm;

[0063] S62 floating leaf stage: Keep the water depth at 3-5 cm and add a small amount of compound fertilizer;

[0064] S63 leaf-standing stage: Apply compound fertilizer with a total content of N, P, and K of 45% once every 10 to 15 days. The fertilizer amount for potted plants is 1g to 3g / pot, and 13 kg / mu for ground planting. The fertilizer should not touch the leaves. Keep the water level and expose them to more sunlight.

[0065] S64 Flowering period: Fertilize according to the condition of the flowers during the flowering period of potted plants, and 13-15 kg / mu each time during the flowering period of ground planting. Pay attention to fill the pot with water for potted plants, and keep the water depth of 10 cm for ground planting to prevent dehydration from affecting growth or even death;

[0066] The specific fertilization method for potted plants during flowering period is:

[0067] (1) Apply compound fertilizer once after the flower buds emerge from the water surface, with an application rate of 2g to 4g per pot;

[0068] (2) Fertilize once every 10 to 15 days during the flowering period, with an application rate of 2 to 3 g per pot;

[0069] (3) Fertilize once at the end of flowering period, with an application rate of 1g to 3g per pot.

[0070] In this embodiment, the lotus root whip does not leave the mother body at the beginning, so that the young lotus root whip can continue to obtain nutrition and resistance from the mother body and grow well; at the same time, the lotus root whip leaves the soil and is exposed to the air, so that the lotus root whip is exercised and hardened, and can better adapt to transplanting and planting.

[0071] The present embodiment 1-3 adopts the symbiotic seedling hardening method, so that the survival rate of lotus root whip reproduction reaches 100%; at the same time, the symbiotic seedling hardening method only needs to dig out a bud from the soil, which is easy to dig and saves work time.

[0072] The above examples are only for illustrating the technical concept and features of the present invention, and their purpose is to enable people familiar with the technology to understand the content of the present invention and implement it accordingly, and they cannot be used to limit the protection scope of the present invention. Any equivalent transformation or modification made according to the spirit of the present invention should be included in the protection scope of the present invention.

Claims

1. A method for improving the survival rate of lotus root whip reproduction by symbiotic hardening, characterized in that: The following steps are involved: S1 Dig out the lotus root whip: Select the mother lotus root whip, follow the curled leaves of the mother lotus root whip with your fingers to break the roots on the nodes in the soil, hold the node with your hand and gently pull out the lotus root whip in the opposite direction of the curled leaf opening; S2: The lotus root whips are symbiotically connected to the mother plant: the lotus root whips dug out in step S1 are kept connected to the mother plant, and are loosely tied with plastic bands and hung on the mature lotus petioles nearby; S3 seedling hardening and growth: after step S2, the lotus root whip is removed from the soil and exposed to light for 5-7 days; S4: cutting the mature seedlings from the mother plant: when the lotus root whip grown in step S3 grows to one leaf, two nodes and one bud, the lotus root whip becomes hard and is light green or pink, cutting the lotus root whip from the mother plant to obtain the lotus root whip seedling to be planted; S5 Planting of lotus root whip seedlings: Keep a water depth of 3cm above the soil surface of the planting site, dig a shallow trench slightly longer than the seedling, and place the lotus root whip seedlings cut from the mother body in step S4 horizontally in the trench, with the large leaves of the lotus root whip exposed above the soil surface and the rest covered in the soil, to complete the planting.

2. The method for improving the survival rate of lotus root rhizome reproduction by symbiotic seedling hardening according to claim 1, characterized in that: Step S1: The period for digging out lotus root whips is from May to early August.

3. The method for improving the survival rate of lotus root whip reproduction by symbiotic seedling hardening according to claim 1, characterized in that: The method for selecting the mother plant of the lotus root whip in step S1 is: selecting the mother plant which is still in the leaf curling stage, the direction of its leaf curling opening pointing to is the direction of the lotus root whip growth, and the top bud of the lotus root whip has not yet grown leaves.

4. The method for improving the survival rate of lotus root whip reproduction by symbiotic seedling hardening according to claim 1, characterized in that: It also includes reproductive period management.

5. The method for improving the survival rate of lotus root rhizome reproduction by symbiotic seedling hardening according to claim 4, characterized in that: The growth period management specifically comprises the following steps: S61 Seedling Acceleration Period: No fertilizer is needed during the seedling acceleration period, and the water depth should be maintained at 3cm; S62 floating leaf stage: Keep the water depth at 3-5 cm and add a small amount of compound fertilizer; S63 leaf-standing stage: Apply compound fertilizer with a total content of N, P, and K of 45% once every 10 to 15 days. The fertilizer amount for potted plants is 1g to 3g / pot, and 13 kg / mu for ground planting. The fertilizer should not touch the leaves. Keep the water level and expose them to more sunlight. S64 Flowering period: Fertilize potted plants according to the condition of the flowers during the flowering period. Apply fertilizer 13-15 kg / mu each time during the flowering period of ground planting. Pay attention to fill the pots with water for potted plants, and keep the water depth of 10 cm for ground planting to prevent dehydration from affecting growth or even death.

6. The method for improving the survival rate of lotus root rhizome reproduction by symbiotic seedling hardening according to claim 5, characterized in that: The specific fertilization method during the flowering period of the potted plants in step S64 is: (1) Apply compound fertilizer once after the flower buds emerge from the water surface, with an application rate of 2g to 4g per pot; (2) Fertilize once every 10 to 15 days during the flowering period, with an application rate of 2 to 3 g per pot; (3) Fertilize once at the end of flowering period, with an application rate of 1g to 3g per pot.

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