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Method for preparing special fertilizers for stevia rebaudiana

A technology of special fertilizer and stevia, which is applied in the field of preparation of special fertilizer for stevia, can solve problems such as increase of harmful microorganisms and harmful bacteria, decline of stevia yield, loss of soil fertility, etc. The effect of improving and increasing production

Inactive Publication Date: 2018-03-16
汪逸凡
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] The technical problem to be solved by the present invention is to provide a preparation method of stevia special fertilizer in view of the increase in the application amount of stevia special fertilizer, the loss of soil fertility, the increase of harmful microorganisms and harmful germs, and the decline of stevia production

Method used

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Examples

Experimental program
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Effect test

preparation example Construction

[0031] A preparation method of stevia special fertilizer, the preparation method comprising the steps of:

[0032] (1) In parts by weight, take 20~30 parts of water, 10~15 parts of alkali lignin, 5~6 parts of polyvinyl alcohol, 5~6 parts of 0.1mol / L acetic acid solution, 1~2 parts of chitosan , 0.1~0.5 part of crosslinking agent, 0.08~1 part of strengthening agent, mix water, alkali lignin and polyvinyl alcohol, stir at a temperature of 80~90°C for 40~50min, and the stirring rate is 300~400r / min, To obtain a stirred mixture, mix chitosan and 0.1mol / L acetic acid solution, and stir at 200~300r / min until completely dissolved, to obtain a solution, mix the stirred mixture and the solution, add crosslinking agent, Strengthening agent, then stir at 120~200r / min to obtain a mixture, mix the mixture and water according to the mass ratio of 1:3~4, pass through a 300~400 mesh sieve, and obtain the sieved product, which is set aside;

[0033] (2) In parts by weight, take 20~30 parts of...

Embodiment 1

[0037] The crosslinking agent is formaldehyde.

[0038] The reinforcing agent is graphite.

[0039] The leavening agent is yeast.

[0040] Potash fertilizer is potassium chloride.

[0041] The phosphate fertilizer is monocalcium phosphate.

[0042] A preparation method of stevia special fertilizer, the preparation method comprising the steps of:

[0043] (1) In parts by weight, take 20 parts of water, 10 parts of alkali lignin, 5 parts of polyvinyl alcohol, 5 parts of 0.1mol / L acetic acid solution, 1 part of chitosan, 0.1 part of crosslinking agent, and 0.08 parts of reinforcing agent, mix water, alkali lignin, and polyvinyl alcohol, stir at a temperature of 80°C for 40min, and the stirring rate is 300r / min, to obtain a stirred mixture, mix chitosan, 0.1mol / L acetic acid solution, and Stir at 200r / min until it is completely dissolved to obtain a solution. Mix the stirred mixture and solution, add a crosslinking agent and a reinforcing agent, and then stir at 120r / min to ob...

Embodiment 2

[0048] The crosslinking agent is formaldehyde.

[0049] The reinforcing agent is carbon black.

[0050] The leavening agent is yeast.

[0051] Potash fertilizer is potassium sulfate.

[0052] The phosphate fertilizer is monocalcium phosphate.

[0053] A preparation method of stevia special fertilizer, the preparation method comprising the steps of:

[0054] (1) In parts by weight, take 25 parts of water, 12 parts of alkali lignin, 5 parts of polyvinyl alcohol, 5 parts of 0.1mol / L acetic acid solution, 1 part of chitosan, 0.3 parts of crosslinking agent, and 0.09 parts of reinforcing agent, mix water, alkali lignin, and polyvinyl alcohol, stir at a temperature of 85°C for 45min, and the stirring rate is 350r / min, to obtain a stirred mixture, mix chitosan, 0.1mol / L acetic acid solution, and Stir at 250r / min until it is completely dissolved to obtain a solution. Mix the stirred mixture and solution, add a crosslinking agent and a reinforcing agent, and then stir at 170r / min t...

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Abstract

The invention relates to the technical field of planting fertilizers, in particular to a method for preparing special fertilizers for stevia rebaudiana. The method has the advantages that alkali lignin-polyvinyl alcohol cross-linking reaction films prepared from alkali lignin and polyvinyl alcohol wrap the roots of the stevia rebaudiana, the lignin can be dissolved in solution and can be dissolvedwith the polyvinyl alcohol, the distances between polyvinyl alcohol molecules can be enlarged, obstruction between gas molecules can be relatively reduced, diffusion can be facilitated, and accordingly the air permeability of films can be improved; reaction can be carried out on added cross-linking agents and hydroxyl of the lignin and hydroxyl of the polyvinyl alcohol, lignin molecules and the polyvinyl alcohol molecules can be integrated with one another, the molecules are good in interaction with one another, and the light transmittance of the films can be improved; the films are air-permeable, light can be transmitted through the films, and accordingly influence on normal respiration of the roots can be prevented; the lignin with diversified aromatic rings has the capability of shielding ultraviolet radiation, the ultrasonic absorption of the films can be improved, the ageing-resistant performance of the films can be enhanced, accordingly, diseases due to germs can be inhibited, and the yield of the stevia rebaudiana can be increased.

Description

technical field [0001] The invention relates to the technical field of planting fertilizers, in particular to a method for preparing special stevia fertilizer. Background technique [0002] Stevia is a perennial herb of the genus Stevia in the Asteraceae family. The whole Stevia plant contains sugar, and the sweetness of the leaves is the highest, containing about 14% glycosides. The glycosides of the branches are equivalent to half of the leaves. Stevia leaves can be used as sugar after drying and crushing, or through ethanol precipitation Obtained stevioside, the sweetness is equivalent to 250~300 times of white sugar, and the calories are only 1 / 300 of white sugar. Not only that, stevioside has no toxic side effects, no carcinogens, safe to eat, regular consumption can prevent high blood pressure , diabetes, obesity, heart disease, dental caries and other diseases, it is an ideal sweetener to replace sucrose. At present, it has been widely used in food, beverage, medici...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00C05F17/00
CPCC05B1/04C05F17/00C05G3/00C05B7/00C05C3/00C05C9/00C05D1/02C05D5/00C05F3/00C05F7/00C05F11/00C05F11/08C05D1/00Y02W30/40
Inventor 汪逸凡乔舍林凡
Owner 汪逸凡
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