A method for planting Dendrobium nobile in karst rock cracks

Abstract

The present invention relates to the field of dendrobium cultivation technology, and in particular to a method for planting Dendrobium nobile in karst rock crevices, comprising the following steps: (1) site selection, (2) dendrobium planting, and (3) dendrobium management. The method of the present invention is efficient and practical. Dendrobium nobile is planted in the unique karst terrain environment, significantly improving the adaptability of dendrobium, allowing for a wider planting area and higher economic benefits for the land. In actual production, the method can be interplanted with other crops to complement each other, thus having strong practicality.

Description

Technical Field

[0001] The invention relates to the technical field of dendrobium planting, in particular to a method for planting dendrobium nobile in karst rock crevices. Background Art

[0002] Karst, also known as karst formations, is a geological process involving water on soluble rocks (such as carbonates, gypsum, and rock salt), primarily through chemical dissolution, supplemented by mechanical processes such as erosion, subsidence, and collapse, as well as the phenomena resulting from these processes. The landforms created by karst processes are called karst landforms (karst landforms). Guizhou is a typical example of karst topography. Due to the limited agricultural land in karst areas and the high, steep slopes, farmers in the 1980s and 1990s, to address the problem of arable land, terraced land was commonly used to transform steep karst slopes, leaving behind numerous stone-built ridges.

[0003] Dendrobium nobile is a perennial herb with exceptional medicinal value. While it is cultivated extensively in the Danxia region of northern Guizhou, with relatively mature technology, much of Guizhou's karst region, once home to the plant, differs significantly from the Danxia region. The soft, soft rock of Danxia makes it suitable for cultivation, while the harder rock of karst makes it difficult to cultivate directly. Therefore, utilizing the abundant remaining rocky ridges to cultivate Dendrobium nobile and improve agricultural economic efficiency in karst regions remains a hot topic in this field. Summary of the Invention

[0004] In order to solve the problems existing in the prior art, the present invention provides a method for planting Dendrobium nobile in karst crevices, so as to promote the growth and reproduction of Dendrobium nobile in dendrobium and increase the planting area of ​​Dendrobium in karst terrain. The specific technical solution is as follows:

[0005] A method for planting Dendrobium nobile in karst rock crevices comprises the following steps:

[0006] (1) Site selection

[0007] Choose stones with a natural shade of 30%-60% to build the ridge, with a pore diameter of 5-8cm and an air relative humidity of 70-85%;

[0008] (2) Dendrobium cultivation

[0009] Process the wood blocks into strips with a diameter of 3-8 cm, soak the strips in a potassium salt solution for 3-5 days, air-dry the strips, and evenly stack them. Spray the surface of the strips with a magnesium chloride solution having a mass fraction of 0.2-0.33% at a rate of 5-8% of the weight of the strips. Dry the strips naturally for 2-3 hours, turn the other side over, and spray the magnesium chloride solution again at the same rate. Place the strips in a storage room at a temperature of 25-28°C and a humidity of 70-75% for 5-8 hours.

[0010] Place the wooden strips in the furnace and burn until the surface is carbonized; tie the 4-6cm long Dendrobium nobile seedlings to the wooden strips with palm bark and insert the wooden strips into the cracks of the stones;

[0011] (3) Dendrobium management

[0012] After planting Dendrobium, install a sprinkler under the ridge. When the temperature is above 28℃ in summer, spray for 10-15 minutes every 1-2 hours. Every 2-3 months, place dried weeds in the cracks between the wooden strips, applying 100-130g of weeds to each wooden strip.

[0013] The method for preparing the sun-dried weeds comprises the following steps: processing 10-15 parts of barnyard grass into pieces of 1-2 cm, processing 34-55 parts of foxtail grass into pieces of 3-5 cm, adding 1-3 parts of potassium feldspar powder, 200-300 parts of clean water, and 4-9 parts of coconut fiber, mixing and soaking the mixture for 20-30 days, spreading the mixture and exposing it to the sun, waiting for the water to evaporate naturally to a moisture content of 20-25%, and pressing the remainder into a straw stack with a density of 150-180 kg / m3.

[0014] Preferably, the potassium salt solution is prepared by mixing potassium sulfate, potassium chloride and water in a mass ratio of 1-3:1-5:120-130.

[0015] Preferably, the carbonization thickness is 1-3 mm.

[0016] Preferably, the palm bark is palm sheath fiber.

[0017] Preferably, the installation spacing of the nozzles is 1-1.5m.

[0018] Compared with the prior art, the technical effects of the present invention are embodied in:

[0019] The present invention selects stones with a natural shading degree of 30%-60% to form a ridge, which can provide a stable growth environment for Dendrobium nobile and fully utilize the topographical features of karst. In the cultivation of Dendrobium, wooden blocks are processed into wooden strips, the wooden strips are soaked in a potassium salt solution, the wooden strips are naturally air-dried, and evenly stacked. A magnesium chloride solution is applied to the surface of the wooden strips, and the wooden strips are naturally dried. The other side of the wooden strips is turned over and sprayed with the aforementioned magnesium chloride solution again; the wooden strips are allowed to fully absorb potassium salt and magnesium, and can form insoluble sulfates or magnesium salts with the components in the wooden strips to promote the surface strengthening of the wooden strips, which can release nutrients during the cultivation of Dendrobium. The wooden strips are placed in a stove and burned until the surface is carbonized; the surface of the wooden strips is made more stable and has stronger adsorption, which improves the sustainability of nutrient release in the soil and stabilizes the soil structure; the long Dendrobium nobile seedlings are tied to the wooden strips with palm bark, and the wooden strips are inserted into the cracks in the stones; it is convenient for Dendrobium to continuously absorb nutrients in the wooden strips.

[0020] After the dendrobium is planted, sprinklers are installed beneath the ridge to increase humidity in the cracks, promote its growth, and control the temperature. Sun-dried weeds are placed in the cracks where the wood strips are located to provide more nutrients, increasing the cracks' water and fertilizer holding capacity. To prepare the dried weeds, barnyard grass, foxtail grass, potassium feldspar powder, clean water, and coconut fiber are mixed and soaked to dissolve the nutrients and fertilizer. Exposure to sunlight and pressure makes the weeds more compact, improving their absorbency and stability. When applied to the cracks, they fully bond with the wood strips, providing a stable environment for the dendrobium to grow.

[0021] The method of the present invention is efficient and practical. The cultivation of Dendrobium nobile in a karst terrain environment can significantly improve the adaptability of Dendrobium, thereby expanding the planting area of ​​Dendrobium and increasing the economic benefit of the land. In actual production, the method can be interplanted with other crops to complement each other, and has strong practicality. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 is the photosynthesis transpiration rate of Dendrobium nobile;

[0023] Figure 2 This is a planting and growth diagram of Dendrobium nobile of the present invention. DETAILED DESCRIPTION

[0024] The technical solution of the present invention is further defined below in conjunction with specific implementation methods, but the scope of protection required is not limited to the description.

[0025] Example 1

[0026] A method for planting Dendrobium nobile in karst rock crevices comprises the following steps:

[0027] (1) Site selection

[0028] Choose stones with a natural shade of 30% to build the ridge, with a pore diameter of 5-8cm and an air relative humidity of 70%;

[0029] (2) Dendrobium cultivation

[0030] Process the wood blocks into 3 cm diameter strips, soak the strips in potassium salt solution for 3 days, air dry the strips, stack them evenly, spray the surface of the strips with 0.2% magnesium chloride solution (5% by mass) and dry them naturally for 2 hours. Turn the strips over and spray the same amount of magnesium chloride solution again. Place the strips in a storage room at 25°C and 70% humidity for 5 hours.

[0031] Place the wooden strips in the furnace and burn until the surface is carbonized; tie the 4cm long Dendrobium nobile seedlings to the wooden strips with palm bark and insert the wooden strips into the cracks of the stones;

[0032] The potassium salt solution is prepared by mixing potassium sulfate, potassium chloride and water in a mass ratio of 1:1:120; the carbonized thickness is 1 mm; the palm bark is palm leaf sheath fiber;

[0033] (3) Dendrobium management

[0034] After the dendrobium is planted, a sprinkler is installed under the ridge. In summer, when the temperature is above 28°C, spray for 10 minutes every hour. Every two months, dry weeds are placed in the cracks between the wooden strips, and 100g of weeds are applied to each wooden strip.

[0035] The installation distance between the nozzles is 1m;

[0036] The method for preparing the sun-dried weeds comprises the following steps: processing 10 parts of barnyard grass into 1 cm pieces and 34 parts of foxtail grass into 3 cm pieces, adding 1 part of potassium feldspar powder, 200 parts of clean water and 4 parts of coconut fiber, and soaking the mixture for 20 days; spreading the mixture and exposing it to the sun; waiting for the water to evaporate naturally to a moisture content of 20%; and pressing the remainder into a straw stack with a density of 150 kg / m3.

[0037] Example 2

[0038] A method for planting Dendrobium nobile in karst rock crevices comprises the following steps:

[0039] (1) Site selection

[0040] Choose stones with a natural shade of 50% to build the ridge, with a pore diameter of 5-8cm and an air relative humidity of 80%;

[0041] (2) Dendrobium cultivation

[0042] Process the wood blocks into 8 cm diameter strips, soak the strips in potassium salt solution for 5 days, air dry the strips, stack them evenly, spray the surface of the strips with 0.33% magnesium chloride solution (8% of the weight of the strips), dry them naturally for 3 hours, turn the other side over, spray the same amount of magnesium chloride solution again, and place the strips in a storage room at 28°C and 75% humidity for 8 hours;

[0043] Place the wooden strips in the furnace and burn until the surface is carbonized; tie 6cm long Dendrobium nobile seedlings to the wooden strips with palm bark and insert the wooden strips into the cracks of the stones;

[0044] The potassium salt solution is prepared by mixing potassium sulfate, potassium chloride and water in a mass ratio of 3:5:130; the carbonized thickness is 3 mm; the palm bark is palm leaf sheath fiber;

[0045] (3) Dendrobium management

[0046] After the dendrobium is planted, a sprinkler is installed under the ridge. In summer, when the temperature is above 28°C, spray for 15 minutes every 2 hours. Every 3 months, dry weeds are placed in the cracks between the wooden strips, and 130g of weeds are applied to each wooden strip.

[0047] The installation distance between the nozzles is 1.5m;

[0048] The method for preparing the sun-dried weeds comprises the following steps: processing 15 parts of barnyard grass into 2 cm pieces and 55 parts of foxtail grass into 5 cm pieces, adding 3 parts of potassium feldspar powder, 300 parts of clean water, and 9 parts of coconut fiber, mixing and soaking the mixture for 30 days, spreading the mixture and exposing it to the sun, waiting for the water to evaporate naturally to a moisture content of 25%, and pressing the remainder into a straw stack with a density of 180 kg / m3.

[0049] Example 3

[0050] A method for planting Dendrobium nobile in karst rock crevices comprises the following steps:

[0051] (1) Site selection

[0052] Choose stones with a natural shade of 60% to build the ridge, with a pore diameter of 5-8cm and an air relative humidity of 80%;

[0053] (2) Dendrobium cultivation

[0054] Process the wood blocks into 8 cm diameter strips, soak the strips in potassium salt solution for 3 days, air dry the strips, stack them evenly, spray the surface of the strips with 0.33% magnesium chloride solution (8% of the weight of the strips), dry them naturally for 2 hours, turn the other side over, spray the same amount of magnesium chloride solution again, and place the strips in a storage room at 28°C and 70% humidity for 8 hours;

[0055] Place the wooden strips in the furnace and burn until the surface is carbonized; tie 6cm long Dendrobium nobile seedlings to the wooden strips with palm bark and insert the wooden strips into the cracks of the stones;

[0056] The potassium salt solution is prepared by mixing potassium sulfate, potassium chloride and water in a mass ratio of 3:1:130; the carbonized thickness is 3 mm; the palm bark is palm leaf sheath fiber;

[0057] (3) Dendrobium management

[0058] After the dendrobium is planted, a sprinkler is installed under the ridge. In summer, when the temperature is above 28°C, spray for 10 minutes every 2 hours. Every 3 months, dry weeds are placed in the cracks between the wooden strips, and 130g of weeds are applied to each wooden strip.

[0059] The installation distance between the nozzles is 1.5m;

[0060] The method for preparing the sun-dried weeds comprises the following steps: processing 15 parts of barnyard grass into 1 cm pieces and 55 parts of foxtail grass into 3 cm pieces, adding 3 parts of potassium feldspar powder, 300 parts of clean water, and 9 parts of coconut fiber, mixing and soaking the mixture for 30 days, spreading the mixture and exposing it to the sun, waiting for the water to evaporate naturally to a moisture content of 25%, and pressing the remainder into a straw stack with a density of 160 kg / m3.

[0061] Contrast ratio settings:

[0062] Comparative Example 1 The difference from Example 1 is that magnesium chloride is not used in step (2); Comparative Example 2 The difference from Example 1 is that potassium sulfate is not used in step (2); Comparative Example 3 The difference from Example 1 is that the wood strips in step (2) are not carbonized; Comparative Example 4 The difference from Example 1 is that step (3) is not performed and potassium feldspar powder is not used; Comparative Example 5 The difference from Example 1 is that the weeds are not pressurized in step (3) and are directly made into conventional ball-shaped grass balls.

[0063] Test Example 1

[0064] At the Dendrobium nobile planting base in Xingyi, Guizhou, an artificial ridge with a height of 1.8-2.2m was selected and made of limestone. The side of the ridge was divided into 8 areas, and Dendrobium nobile was planted according to Examples 1-3 and Comparative Examples 1-5 respectively. The areas were managed uniformly without affecting each other. One year after the Dendrobium nobile was planted, the photosynthesis transpiration rate of Dendrobium nobile was tested using the Li-6400 portable photosynthesis measurement system between 10:00-16:00 on a sunny day. The results are shown in Figure 2. Figure 1 ; According to the dendrobium ine content determination method in the 2020 edition of the "Chinese Pharmacopoeia", the dendrobium ine content in each group of Dendrobium nobile plants was detected, and the tillering rate of Dendrobium nobile was counted. The results are shown in Table 1; The scavenging ability of the dried plants of Dendrobium nobile on DPPH free radicals was detected.

[0065] (1) Detection of transpiration rate of photosynthesis of Dendrobium nobile Figure 1 ,Depend on Figure 1It can be seen that the transpiration rate of photosynthesis of Dendrobium nobile in Examples 1-3 is significantly higher than that of Comparative Examples 1-5. Obviously, the technical solution of the present invention has a positive effect on the photosynthesis of Dendrobium nobile, can promote the transport of nutrients inside the Dendrobium plant, and is the basis for the present invention to promote the high-quality growth of Dendrobium.

[0066] The transpiration rate of photosynthesis of comparative example 1 Dendrobium nobile is significantly lower than that of embodiment 1-3, and it is obvious that the fertilizer effect element used in carbonized wood block has a significant impact on soil activity, such as the fertilizer effect element is less than that causing the content of soil organisms to reduce and then affect the content of water-soluble fertilizer elements in the soil. The transpiration rate of photosynthesis of comparative example 2 is lower than that of embodiment on the whole, and it is obvious that potassium sulfate as a kind of crop requires element, has significant impact for soil, because comparative example 2 does not use potassium sulfate, and there is magnesium chloride in its composition, magnesium ion is easy to precipitate chelate into the mineral of precipitation in soil, is not easy to lose, has more long-term impact for soil activity and causes the numerical value of comparative example 2 to be low. Comparative example 3 is not carbonized, and the stability of its wood strip is poor, and it is obviously reduced on overall adsorption, and it can be seen that the transpiration rate of photosynthesis of Dendrobium nobile of comparative example 3 declines, and the stability of wood block is also the key of dendrobium growth. Potassium feldspar is not used in comparative example 4, and the persistent release of nutrients in the later stage brings significant impact, so the overall detection numerical value is low. In Comparative Example 5, because the weeds were not pressurized, the release effect was relatively rapid, but the sustainability was not ideal, resulting in the detection value of the transpiration rate of photosynthesis of Dendrobium nobile being significantly lower than that of the embodiment.

[0067] Table 1 Index data of Dendrobium nobile

[0068] Tillering rate (%) Dendrobium alkaloid content (%) DPPH (mg / ml) Experimental Example 1 155.65 0.58 11.58 Experimental Example 2 150.39 0.62 12.06 Experimental Example 3 141.96 0.54 14.37 Comparative Example 1 102.04 0.43 7.80 Comparative Example 2 98.27 0.39 8.98 Comparative Example 3 95.94 0.31 6.49 Comparative Example 4 99.53 0.47 9.32 Comparative Example 5 105.28 0.35 7.88

[0069] As can be seen from Table 1, the dendrobium alkaloid content, tillering rate, and DPPH scavenging ability of Examples 1-3 are significantly higher than those of Comparative Examples 1-5. The overall effects of Comparative Examples 3 and 5 are low, which shows that the present invention has a significant effect on improving the root environment of Dendrobium. Figure 1 It can be seen that the present invention increases the dendrobine content of Dendrobium by improving the transpiration efficiency. Figure 2 This is the planting and growth diagram of Dendrobium nobile of the present invention.

Claims

1. A method for planting Dendrobium nobile in karst rock cracks, characterized in that: The following steps are involved: (1) Site selection Choose stones with a natural shade of 30%-60% to build the ridge, with a pore diameter of 5-8cm and an air relative humidity of 70-85%; (2) Dendrobium cultivation Processing wood blocks into strips with a diameter of 3-8 cm, soaking the strips in a potassium salt solution for 3-5 days, taking out the strips and air-drying them naturally, stacking them evenly, spraying the surface of the strips with a magnesium chloride solution of 0.2-0.33% by mass, with a spraying amount of 5-8% of the weight of the strips, and drying them naturally for 2-3 hours, turning the strips over, and spraying the magnesium chloride solution again, with the same amount, and placing the strips in a storage room at a temperature of 25-28°C and a humidity of 70-75% for 5-8 hours; Place the wooden strips in the furnace and burn until the surface is carbonized; tie the 4-6cm long Dendrobium nobile seedlings to the wooden strips with palm bark and insert the wooden strips into the cracks of the stones; The potassium salt solution is prepared by mixing potassium sulfate, potassium chloride and water in a mass ratio of 1-3:1-5:120-130; the carbonization thickness is 1-3 mm; (3) Dendrobium management After planting Dendrobium, install a sprinkler under the ridge. When the temperature is above 28℃ in summer, spray for 10-15 minutes every 1-2 hours. Every 2-3 months, place dried weeds in the cracks between the wooden strips, applying 100-130g of weeds to each wooden strip. The method for preparing the sun-dried weeds comprises the following steps: processing 10-15 parts of barnyard grass into pieces of 1-2 cm, processing 34-55 parts of foxtail grass into pieces of 3-5 cm, adding 1-3 parts of potassium feldspar powder, 200-300 parts of clean water, and 4-9 parts of coconut fiber, mixing and soaking the mixture for 20-30 days, spreading the mixture and exposing it to the sun, waiting for the water to evaporate naturally to a moisture content of 20-25%, and pressing the remainder into a straw stack with a density of 150-180 kg / m3.

2. The method for planting Dendrobium nobile in karst rock cracks according to claim 1, characterized in that: The palm bark is the sheath fiber of palm.

3. The method for planting Dendrobium nobile in karst rock cracks according to claim 1, characterized in that: The installation spacing of the nozzles is 1-1.5m.

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