Method for regulating and controlling growth of plant root system

Abstract

The invention relates to the technical field of plant cultivation, and discloses a plant root growth regulation and control method which comprises the steps of drying inorganic soil, fixing roots of nursery stocks or cutting living stumps, digging pits, treating soil, laying isolating membranes, backfilling the inorganic soil and the like. The non-rooting area of the plant root is backfilled with relatively dry inorganic soil with low organic matter content and covered with the isolating membrane, moisture and nutrient exchange between the plant stem and surrounding soil is isolated, an artificial improved soil environment for inhibiting development of the root system of the plant stem is formed, and the plant root system does not grow or grows less in the area. Nutrient components required by root growth are injected into the plant root rooting area in advance to form a soil environment beneficial to full development of plant roots, and the plant roots are guided to be fully developed in the area by utilizing the characteristics of hydrophilicity and mineral affinity of the plant roots, so that the purpose of regulating and controlling the plant roots to fully grow in deep soil is achieved.

Description

Technical Field

[0001] The invention relates to the technical field of plant cultivation, and in particular to a method for regulating the growth of plant roots. Background Art

[0002] Plant roots are important organs for plant survival. They can not only absorb nutrients, water and minerals from the soil for plant growth, but also fix the plants themselves, and at the same time strengthen the soil to play a role in soil and water conservation. The existing technology mainly promotes the growth of plant roots and regulates the spatial distribution of plant roots by configuring nutrient solution in prefabricated containers and shaped molds indoors or in nurseries, and mainly considers the growth and distribution of plant roots in the shallow soil layer. For the actual site, the growth of plant roots is regulated in the deep soil. The existing technology cannot fully utilize the characteristics of shallow soil rooting, and the construction process is relatively complicated. Summary of the invention

[0003] The purpose of the present invention is to provide a method for regulating the growth of plant roots, which can give full play to the mechanical effect of plant roots in stabilizing deep soil. Compared with traditional slope maintenance structures, it has the characteristics of low cost, environmentally friendly construction materials, strong operability and simple implementation process.

[0004] In order to achieve the above object, the present invention provides a method for regulating plant root growth, comprising the following steps:

[0005] Take inorganic soil, dry it thoroughly and seal it for later use;

[0006] Selecting transplanted seedlings or cuttings of living tree stumps with vigorous growth and developed root systems, laying organic soil at their roots, and fixing the soil at the roots of the seedlings or cuttings of living tree stumps;

[0007] Dig a pit in the transplanting site and carry out nutrient treatment on the soil below the bottom of the pit;

[0008] An isolation film is laid along the wall of the dug pit, the seedlings or cuttings of living tree stumps are planted within the coverage of the isolation film, the sealed inorganic soil is filled in layers to bury the seedlings or cuttings of living tree stumps in the non-rooting area, and the edges of the isolation film are folded to wrap and seal the inorganic soil to isolate the non-rooting area.

[0009] Preferably, the organic matter content in the inorganic soil is less than 1 wt %, and the water content of the inorganic soil after drying is 5%-10 wt %.

[0010] Preferably, the water content of the organic soil is 60%-80% of the field water holding capacity, and also includes 2-5g / m 3 , minerals 1-3g / m 3, carbon source 0.1-0.2m 3 / m 3 .

[0011] Preferably, the nutrient solution comprises 100-200 ppm nitrogen, 30-50 ppm phosphorus, 100-200 ppm potassium, 1-2 ppm iron, 0.1-1 ppm zinc, 0.1-1 ppm copper, 0.1-1 ppm manganese, 0.5-1 ppm boron, and 0.01-0.1 ppm molybdenum.

[0012] Preferably, the minerals include 50-200 ppm calcium, 10-50 ppm magnesium, and 30-100 ppm sulfur.

[0013] Preferably, the carbon source is compost or straw.

[0014] Preferably, the pH value of the organic soil is between 6.5 and 7.0.

[0015] Preferably, fixing the soil at the roots of the seedlings or cuttings stumps comprises:

[0016] The soil at the roots of the seedlings or the living tree stumps for cuttings is fixed by using braided straw ropes.

[0017] Preferably, the nutrient treatment of the soil below the pit bottom includes:

[0018] A grouting pipe is pre-buried, wherein the liquid outlet end of the grouting pipe is inserted 15-30 cm into the bottom of the soil pit;

[0019] Water and nutrient solution required for the growth of the plant root system are injected into the grouting pipe, and the contents of the water and nutrient solution are the same as those in the organic soil.

[0020] Preferably, folding the edge of the isolation film to wrap and seal the inorganic soil comprises:

[0021] Folding the edge of the isolation film until it completely covers the inorganic soil;

[0022] The surface of the inorganic soil isolation film is covered with a covering material and compacted.

[0023] The beneficial effects of the present invention are:

[0024] The non-rooting area of ​​the plant roots is backfilled with relatively dry inorganic soil with low organic matter content and covered with an isolation film to isolate the plant stems from the exchange of water and nutrients with the surrounding soil, forming an artificially improved soil environment that inhibits the development of the plant stem root system, so that the plant roots do not grow or grow less in this area.

[0025] The nutrients required for root growth are injected into the rooting zone of plants in advance to form a soil environment that is conducive to the full development of plant roots. The hydrophilic and mineral-philic characteristics of plant roots are utilized to guide the plant roots to fully develop in this area, so as to achieve the purpose of regulating the full growth of plant roots in deep soil.

[0026] Other features and advantages of the present invention will be described in detail in the following detailed description. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the following specific embodiments, they are used to explain the present invention but do not constitute a limitation of the present invention. In the accompanying drawings:

[0028] Figure 1 A schematic structural diagram of a method for regulating plant root growth according to an embodiment of the present invention is shown. DETAILED DESCRIPTION

[0029] The specific implementation of the present invention is described in detail below in conjunction with the accompanying drawings. It should be understood that the specific implementation described here is only used to illustrate and explain the present invention, and is not used to limit the present invention.

[0030] Example 1

[0031] Please refer to Figure 1 This embodiment discloses a method for regulating plant root growth, comprising the following steps:

[0032] S1: Take inorganic soil 1 containing less than 1% organic matter, air-dry it to a water content of 5wt%-10wt%, and then seal it for later use.

[0033] S2: Select transplanted seedlings or cuttings of living tree stumps 2 with vigorous growth and developed root systems, lay organic soil 3 at their roots, and use braided straw ropes to fix the soil at the roots of the seedlings or cuttings of living tree stumps 2.

[0034] S3: Dig a pit in the transplanting site, the depth of the pit is the plant root depth plus 30-40cm. When digging the pit, pre-bury the grouting pipe 4, insert the liquid outlet of the grouting pipe 15-30cm into the bottom of the pit, and then inject nutrient solution and water to treat the soil below the bottom of the pit to meet the standards of organic soil. During the growth of the plant, water and nutrient solution should be injected regularly to provide a long-term and good growth environment for the plant roots.

[0035] S4: Fill a layer of organic soil 3 with a thickness of 20-30 cm at the bottom of the pit to create a better rooting environment for the plant roots, allowing the plant roots to grow rapidly.

[0036] S5: Lay an isolation film 5 along the wall of the dug pit, plant seedlings or cuttings of live tree stumps 2 within the range of the isolation film 5, fill in the sealed inorganic soil 1 in layers to the non-rooting area 6 that buries the seedlings or cuttings of live tree stumps 2, fold the edges of the isolation film 5 to wrap and seal the inorganic soil 1, and then cover the isolation film with a layer of covering material and compact it to isolate the non-rooting area 5. The isolation film 4 can isolate the exchange of water and nutrients between the non-rooting area 6 and the external soil, preventing the lateral growth of plant roots. The inorganic soil 1 isolates the exchange of water and nutrients between the plant rhizomes and the surrounding soil, forming an artificially improved soil environment that inhibits the development of the plant stem root system, so that the plant roots do not grow or grow less in this area. Layered filling can better protect the rhizomes and reduce root damage. Appropriate compaction during backfilling can improve the soil structure, ensure the appropriate softness and air permeability of the soil around the root system, and thus improve the success rate of transplantation.

[0037] In this embodiment, the grouting pipe 4 is a steel pipe, and the nutrient solution is injected into the plant root growth area through the pre-buried steel pipe. The nutrient solution poured on the top of the steel pipe forms a plant root growth soil environment containing nutrient solution in the rhizome growth area through infiltration; the steel pipe penetrates the isolation membrane 5, which has a diameter of 25mm, and 4-6 roots are arranged around the plant rhizome, with a root spacing of 30-50cm, to ensure the uniformity of the nutrient components injected into the rhizome growth area, so as to promote the full development of the plant roots in the growth area.

[0038] The isolation membrane 5 is made of rubber material into an inverted cup-shaped protective cover, with a hole in the middle of the rubber membrane cover. The plant roots pass through the hole and wrap a certain area of ​​the plant roots to form a non-rooting zone 6. The rubber membrane has a thickness of 1-2 cm and has a certain durability. The rubber membrane is tightly wrapped in the contact part with the grouting pipe 4 and the plant to prevent soil moisture from penetrating into the non-rooting zone 6 through the gap between the openings.

[0039] In this embodiment, based on 1 cubic meter of organic soil, the nutrient solution ingredients are: 150 ppm nitrogen, 40 ppm phosphorus, 150 ppm potassium, 1.5 ppm iron, 0.5 ppm zinc, 0.5 ppm copper, 0.5 ppm manganese, 0.8 ppm boron, 0.05 ppm molybdenum, 125 ppm calcium, 30 ppm magnesium, 65 ppm sulfur, and the total amount of nutrient solution is 2 g. Carbon source 0.1 m 3 The composted, organic soil 3 had a pH of 6.8 and a water content of 70% of field capacity.

[0040] The pH value can be adjusted by alkaline lime (CaCO3) or acidic sulfur (S). If the soil is acidic, CaCO3 is added for adjustment; if the soil is acidic or alkaline, S is added for adjustment.

[0041] Example 2

[0042] In this embodiment, the specific method steps are the same as those in Embodiment 1, except that the nutrient solution component content, carbon source content and pH value of the organic soil 3 are different.

[0043] The organic soil nutrient solution in this embodiment contains: 100 ppm nitrogen, 30 ppm phosphorus, 100 ppm potassium, 1 ppm iron, 0.1 ppm zinc, 0.1 ppm copper, 0.1 ppm manganese, 0.5 ppm boron, 0.01 ppm molybdenum, 50 ppm calcium, 10 ppm magnesium, 30 ppm sulfur, the total amount of the nutrient solution is 2 g, and the carbon source is 0.1 m 3 of compost, the organic soil had a pH of 6.5 and a moisture content of 60% of field capacity.

[0044] Example 3

[0045] In this embodiment, the specific method steps are the same as those in Embodiment 1, except that the nutrient solution component content, carbon source content and pH value of the organic soil 3 are different.

[0046] In this embodiment, the nutrient solution composition is: nitrogen 200ppm, phosphorus 50ppm, potassium 200ppm, iron 2ppm, zinc 1ppm, copper 1ppm, manganese ppm, boron 1ppm, molybdenum 0.1ppm, calcium 200ppm, magnesium 50ppm, sulfur 100ppm, the total amount of nutrient solution is 4g, and the carbon source is 0.2m 3 of rice straw, the pH value of the organic soil was 7.0 and the water content was 80% of the field capacity.

[0047] In summary, the method of the invention is suitable for regulating the growth of plant roots in deep soil layers, and is used in the field of ecological slope protection as a method of transplanting and planting protective plants, so as to achieve the effect of stabilizing the deep soil layers by utilizing the interaction between plant roots and soil.

[0048] The preferred embodiments of the present invention are described in detail above in conjunction with the accompanying drawings. However, the present invention is not limited to the specific details in the above embodiments. Within the technical concept of the present invention, the technical solution of the present invention can be subjected to a variety of simple modifications, and these simple modifications all belong to the protection scope of the present invention. It should also be noted that the various specific technical features described in the above specific embodiments can be combined in any suitable manner without contradiction. In order to avoid unnecessary repetition, the present invention will not further describe various possible combinations.

[0049] In addition, various embodiments of the present invention may be arbitrarily combined, and as long as they do not violate the concept of the present invention, they should also be regarded as the contents disclosed by the present invention.

Claims

1. A method for regulating plant root growth, characterized in that: The following steps are involved: Take inorganic soil, dry it thoroughly and seal it for later use; Selecting transplanted seedlings or cuttings of living tree stumps with vigorous growth and developed root systems, laying organic soil at their roots, and fixing the soil at the roots of the seedlings or cuttings of living tree stumps; Dig a pit in the transplanting site and carry out nutrient treatment on the soil below the bottom of the pit; An isolation film is laid along the wall of the dug pit, the seedlings or cuttings of living tree stumps are planted within the coverage of the isolation film, the sealed inorganic soil is filled in layers to bury the seedlings or cuttings of living tree stumps in the non-rooting area, and the edges of the isolation film are folded to wrap and seal the inorganic soil to isolate the non-rooting area.

2. The method for regulating plant root growth according to claim 1, characterized in that: The content of organic matter in the inorganic soil is less than 1 wt %, and the water content of the inorganic soil after drying is 5%-10 wt %.

3. The method for regulating plant root growth according to claim 1, characterized in that: The water content of the organic soil is 60%-80% of the field water holding capacity, and also includes 2-5g / m nutrient solution based on the volume of the organic soil. 3 , minerals 1-3g / m 3 , carbon source 0.1-0.2m 3 / m 3 .

4. The method for regulating plant root growth according to claim 3, characterized in that: The nutrient solution comprises 100-200 ppm nitrogen, 30-50 ppm phosphorus, 100-200 ppm potassium, 1-2 ppm iron, 0.1-1 ppm zinc, 0.1-1 ppm copper, 0.1-1 ppm manganese, 0.5-1 ppm boron and 0.01-0.1 ppm molybdenum.

5. The method for regulating plant root growth according to claim 4, characterized in that: The minerals include calcium 50-200 ppm, magnesium 10-50 ppm, and sulfur 30-100 ppm.

6. The method for regulating plant root growth according to claim 5, characterized in that: The carbon source is compost or straw.

7. The method for regulating plant root growth according to claim 6, characterized in that: The pH value of the organic soil is between 6.5 and 7.

0.

8. The method for regulating plant root growth according to any one of claims 1 to 7, characterized in that: The step of fixing the soil at the roots of the seedlings or the living cuttings stumps comprises: The soil at the roots of the seedlings or the living tree stumps for cuttings is fixed by using braided straw ropes.

9. The method for regulating plant root growth according to claim 8, characterized in that: The nutrient treatment of the soil below the pit bottom includes: A grouting pipe is pre-buried, wherein the liquid outlet end of the grouting pipe is inserted 15-30 cm into the bottom of the soil pit; Water and nutrient solution required for the growth of the plant root system are injected into the grouting pipe, and the contents of the water and nutrient solution are the same as those in the organic soil.

10. The method for regulating plant root growth according to claim 9, characterized in that: The step of folding the edge of the isolation film to wrap and seal the inorganic soil comprises: Folding the edge of the isolation film until it completely covers the inorganic soil; The surface of the inorganic soil isolation film is covered with a covering material and compacted.

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