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Special fertilizer formula for stevia rebaudiana

A special fertilizer, stevia technology, applied in application, fertilization device, fertilizer mixture, etc., can solve the problems of nitrogen fertilizer, phosphorus fertilizer waste, pollution, nutrient distribution imbalance, etc., and achieve the effect of promoting full absorption

Inactive Publication Date: 2013-12-25
INST OF SOIL SCI CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the conventional fertilization method at this stage has the problem of unbalanced nutrient distribution, which not only causes waste of nitrogen and phosphorus fertilizers, but also easily pollutes rivers and groundwater due to runoff. Must do

Method used

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  • Special fertilizer formula for stevia rebaudiana
  • Special fertilizer formula for stevia rebaudiana

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0018] The ratio of each component by weight is:

[0019] 38 parts of organic materials (crushed for later use);

[0020] 14 parts of urea;

[0021] 4 parts of ammonium sulfate;

[0022] 14 parts of monoammonium phosphate;

[0023] 16 parts of potassium sulfate;

[0024] 4 parts of trace elements;

[0025] 10 parts mineral conditioner;

[0026] Among them, the organic material is the stevia slag (organic matter content ≥ 50%wt) after aerobic fermentation and decomposing after the sugar is extracted by the water solvent, and the trace elements are ferrous sulfate and zinc sulfate mixed in a ratio of 1:1 by weight. The mineral conditioner is attapulgite.

[0027] Put the above raw materials into the mixer and mix them evenly, then enter the disc granulator for granulation, and then pass through the drum dryer to dry, and after cooling, pass through the grade rotary sieve (the diameter of the finished product particles is 2~4mm), to obtain the special fertilizer for stevia ...

Embodiment 2

[0030] The ratio of each component by weight is:

[0031] 40 parts of organic materials (crushed for later use);

[0032] 14 parts of urea;

[0033] 6 parts of ammonium sulfate;

[0034] 13 parts of monoammonium phosphate;

[0035] 2 parts superphosphate;

[0036] 22 parts of potassium sulfate;

[0037] 3 parts of trace elements;

[0038] 5 parts mineral conditioner;

[0039] Among them, the organic material is the stevia slag (organic matter content ≥ 55%wt, humic acid content ≥ 15%wt) after aerobic fermentation and decomposing after the sugar is extracted by water solvent. The trace elements are zinc sulfate, manganese sulfate, magnesium sulfate, Ferrous sulfate is mixed in a ratio of 1:1:1:2 by weight, and the mineral conditioning agent is zeolite powder.

[0040] After the raw materials are mixed in proportion, the slurry method is used to granulate to obtain the stevia special fertilizer, and its quality meets the national standard of organic-inorganic compound fer...

Embodiment 3

[0043] The test is located in Yinjiazhuang, Xinxing Town, Zhucheng City, Shandong Province, with a test area of ​​1200m 2 , the tested stevia variety is Shoutian No. 3.

[0044] A completely randomized block design was adopted, with two blocks and four plots in each block, which were respectively the experimental group and the control group.

[0045] Control group 1: general-purpose compound fertilizer (N:P 2 o 5 :K 2 O=15:15:15), 50kg / mu, urea 20kg / mu, late topdressing urea, 20kg / mu

[0046] Control group 2: special organic and inorganic fertilizer using ordinary decomposed cow dung as organic raw material (N:P 2 o 5 :K 2 O=9:5:11), the application rate is 120kg / mu.

[0047] Experimental group: adopt the stevia special fertilizer of the embodiment 1 of the present invention, input amount is 120kg / mu.

[0048] The test results are shown in the table below.

[0049]

[0050] As can be seen from the table, using the special fertilizer of the present invention can inc...

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Abstract

The invention discloses a special fertilizer formula for stevia rebaudiana, which is prepared by taking the following components in parts by weight as raw materials: 35-40 parts of organic material, 15-20 parts of nitrogen fertilizer, 10-15 parts of phosphorus fertilizer, 15-22 parts of potassium fertilizer, 3-8 parts of medium trace elements and 5-10 parts of mineral conditioner. In the fertilizer formula, according to the nutritional requirements for the growth of stevia rebaudiana as well as the soil characteristics of the soil in the fertilizer application regions, namely coastal regions in Shandong and Jiangsu, the fertilizer utilization rate is improved to the greatest degree, the crop growth is promoted, and the output and quality of stevia rebaudiana are improved. Meanwhile, after sugar is extracted by use of a water solvent, by taking the stevia rebaudiana residue after aerobic fermentation and thorough decomposition as an organic raw material, environmental pollution is avoided, the production cost is reduced, and the benefits are increased.

Description

technical field [0001] The invention relates to a special organic and inorganic fertilizer formula for economic crops, which is especially suitable for soil application in coastal areas of Shandong and Jiangsu. Background technique [0002] Stevia is a perennial herbaceous plant of Compositae, native to subtropical South America. The roots, stems and leaves of Stevia rebaudiana contain steviol glycosides. Stevioside has the characteristics of high sweetness (200-300 times that of sucrose), low calorie (only 1 / 300 of sucrose), and can increase blood sugar, lower blood pressure, and promote metabolism. Heart disease, dental caries, etc. have a certain auxiliary effect, so it has increasingly attracted people's attention and attention, and has become the "third sugar source" after sucrose and synthetic sugar. In recent years, with the increase in demand for stevia, the planting area is also expanding. It is planted in Hainan in the south, Heilongjiang in the north, east coast...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C05G3/00
Inventor 林先贵徐江兵王一明束中立
Owner INST OF SOIL SCI CHINESE ACAD OF SCI
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