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Soilless seedling raising medium for stevia rebaudiana and preparation method thereof

A technology for soilless seedling raising and stevia, which is applied in the agricultural field, can solve the problems of low seedling rate, easy degeneration of seed properties, etc., and achieves the effects of simple formula, easy disinfection, and elimination of bacteria.

Inactive Publication Date: 2010-10-20
QINGDAO AGRI UNIV
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  • Summary
  • Abstract
  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

Seed propagation is suitable for the needs of new areas and rapidly expanding production areas, but the species is easy to degenerate and the seedling rate is low; cutting seedlings is one of the main methods of stevia seedlings, which is conducive to accelerating the propagation of excellent varieties, and can keep the offspring similar to the mother. The same glucoside content, similar growth traits, not easy to degenerate

Method used

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  • Soilless seedling raising medium for stevia rebaudiana and preparation method thereof
  • Soilless seedling raising medium for stevia rebaudiana and preparation method thereof
  • Soilless seedling raising medium for stevia rebaudiana and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment approach 1

[0018] Sieve the clean and pollution-free river sand first to remove large particles and stones; pile the stevia slag into a pile, cover it with a plastic film, retting for 3 months, take it out and air-dry it, then crush it and pass it through a 5mm sieve. The test stevia slag has a bulk density of 0.38g / cm3, a water holding capacity of about 65%, a nitrogen content of 2.16%, a phosphorus content of 0.87%, a potassium content of 1.65%, and a pH value of about 7. Then the two are mixed uniformly in the ratio of 9:1 (that is, the weight percentage is 90%: 10%) according to the weight ratio of river sand and decomposed stevia residue, and the matrix is ​​made, and the specific gravity of the side test matrix is ​​1.3g / cm 3 , bulk density is 80g / cm 3 .

[0019] The seedling raising test was carried out with the above formula seedling raising substrate, and the surface soil of 0-20 cm in ordinary field was used as the control treatment. Put the substrate and 0-20 cm topsoil into...

Embodiment approach 2

[0026] The nursery facilities are simple sunlight plastic greenhouses. First, clean and pollution-free river sand is sieved to remove large particles and stones; the stevia dregs are fully decomposed, and then the two are uniformly mixed according to the weight ratio of river sand and decomposed stevia dregs of 8.8:1.2 to form a matrix. Take the simple sunlight plastic seedling shed with 0-20 cm surface soil adjacent to the common field as a comparison, and the area of ​​the two sheds is 500 square meters. For cutting seedlings, the survival rate, average height of seedlings, root length and root number were measured 20 days after cutting.

[0027] Table 4 Effects of different treatments on cutting seedling raising (the variety is Qingtian No. 1)

[0028]

[0029] It can be seen from Table 4 that although the simple sunlight plastic greenhouse is lower than that of the greenhouse in various measurement indicators, compared with the use of 0-20 cm topsoil, the use of this s...

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Abstract

The invention discloses a soilless seedling raising medium for stevia rebaudiana and a preparation method thereof, and belongs to seed germination technology in the technical field of agriculture. The soilless seedling raising medium is prepared by uniformly mixing 80 to 90 weight percent of river sand and 10 to 20 weight percent of rotten stevia rebaudiana residue. The soilless seedling raising medium has the advantage that: the rotten stevia rebaudiana residue in the soilless seedling raising medium can make the seedling raising medium appropriately loose and facilitate raising seedlings, is a good organic matter fertilizer, and can meet the nutrient requirement in the seedling raising process. The seedling raising medium has the advantages of low cost, high quality, easy disinfection, and capacity of reducing and stopping disease germs carried by seedlings transplanted to the field. The soilless seedling raising medium also has the advantages of simple formula, simple preparation and easy operation, and is particularly suitable to be promoted in industrial soilless seedling raising of the stevia rebaudiana.

Description

Technical field: [0001] The invention belongs to the field of agricultural technology. Specifically, it relates to a stevia soilless seedling raising substrate and a preparation method thereof. Background technique: [0002] Stevia is a perennial herb of Compositae and an important economic crop. The leaves contain inulin, which is an excellent natural sweetener, and its sweetness is about 300 times that of sucrose. It has been used abroad as a low-calorie food instead of saccharin. Not only has no side effects, but it can also treat certain diseases, such as treating diabetes, lowering blood pressure, and also has curative effects on obesity, heart disease, and children's teeth. It can also promote metabolism and strengthen the body. effect. With the increasing demand for inulin raw materials at home and abroad, the planting area of ​​stevia has also increased rapidly, and it has become a major economic growth point in rural areas and an important source of income for far...

Claims

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Application Information

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IPC IPC(8): A01G31/00C05F5/00C05F17/00
CPCY02A40/20Y02P60/21Y02W30/40
Inventor 石岩马洪义刘相阳任广喜
Owner QINGDAO AGRI UNIV
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