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A method for fertilizing Yunyan 85 tobacco leaves by extracting potassium

A technology of potassium fertilizer and Yunyan, which is applied in the field of potassium fertilization in Yunyan 85, can solve the problems of uncertain potassium fertilizer application amount and application time, restriction of tobacco leaf quality, and low potassium content of tobacco leaves, so as to ensure production, reduce waste, and increase potassium content volume effect

Inactive Publication Date: 2016-02-03
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Judging from the current status quo, the application amount and application time of potassium fertilizer are uncertain
According to the investigation of the Liangshan tobacco area, a large amount of potassium fertilizer is applied all year round when planting flue-cured tobacco locally, and most of the topdressing potassium fertilizer is completed within 30 days after transplanting. The value is only about 1.8%, which seriously limits the further improvement of tobacco leaf quality

Method used

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  • A method for fertilizing Yunyan 85 tobacco leaves by extracting potassium
  • A method for fertilizing Yunyan 85 tobacco leaves by extracting potassium
  • A method for fertilizing Yunyan 85 tobacco leaves by extracting potassium

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for extracting potassium from Yunyan 85 and fertilizing, the method comprising the steps of:

[0026] (1) Tobacco fields are plowed and ridged to dig nests, and the nest spacing is 120×50cm;

[0027] (2) When transplanting, apply 600kg of calcium magnesium phosphate fertilizer, 210kg of ammonium nitrate and 192-216kg of potassium sulfate per hectare around the tobacco seedlings, take a small amount of soil to cover the fertilizer, and then water; ring application is a tobacco fertilization method, specifically: Fertilize around the ridge.

[0028] (3) Before the flue-cured tobacco enters the flourishing period, the first topdressing is carried out at about 50 days of growth, and 90 kg of ammonium nitrate and 68 kg of potassium sulfate are applied around the roots per hectare;

[0029] (4) When more than 50% of the flue-cured tobacco in the flue-cured tobacco buds are topped, and the growth is about 80 days, the second topdressing is carried out after topping, ...

Embodiment 2

[0031] Gradient experiment:

[0032] Soil culture experiment set up 4 potassium treatments (K 2 O): 0 (PK0), 90mg·kg -1 (PK90), 180mg·kg -1 (PK180) and 270mg·kg -1 (PK270) Soil, of which 180-270mg·kg -1 Equivalent to field consumption, 180-270kg·hm -2 It is the local conventional potassium fertilizer application rate in Liangshan Prefecture. Each treatment was repeated 30 times, and the amount of nitrogen and phosphorus fertilizers was applied to N90mg and P per kilogram of soil. 2 o 5 90 mg. The experiment was carried out in a net room with rainproof facilities in the teaching and research farm of Sichuan Agricultural University in 2011. Air-dry the soil and mix it evenly, put it into a 10L plastic bucket, and fill each bucket with 15kg of soil. One week before transplanting, mix all the phosphorus fertilizer, 70% nitrogen fertilizer and 70% potassium fertilizer into the soil in the form of aqueous solution as the base fertilizer, and the remaining nitrogen and potass...

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Abstract

The invention belongs to the technical field of flue-cured tobacco cultivation, and in particular relates to a method for extracting potassium and fertilizing Yunyan 85. The method includes applying potassium fertilizer to Yunyan, and is characterized in that: a certain amount of potassium-containing base fertilizer is applied when planting tobacco, and potassium fertilizer is applied to the flue-cured tobacco before entering the flourishing period and when more than 50% of the flue-cured tobacco is budding and topping. Topdressing, where the amount of potassium-containing base fertilizer is 60%-70% of the overall applied quality of potassium fertilizer, and the amount of potassium fertilizer applied before entering the flourishing period is 15%-20%. top time. The quality of topdressing potassium fertilizer is 15%-20%. Precise fertilization period, topdressing period and dosage of potassium fertilizer can reduce the waste of potassium fertilizer, and can increase the potassium content of tobacco leaves while ensuring the yield. The harvested tobacco leaves were analyzed, and the potassium content of the tobacco leaves was measured to be 3.13%, which was higher than the standard of high-quality tobacco leaves with a potassium content ≥ 2%.

Description

technical field [0001] The invention belongs to the technical field of flue-cured tobacco cultivation, and in particular relates to a method for extracting potassium and fertilizing Yunyan 85. Background technique [0002] Yunyan 85 flue-cured tobacco belongs to Dicotyledonous Phyloflowers Solanaceae, Nicotiana genus, an annual herb plant, and is a variety bred by crossing K326 and Yunyan 2. It has been planted in our country for many years. However, in recent years, continuous cropping and excessive application of chemical fertilizers have led to a decrease in the oil content of the roasted tobacco leaves, a decrease in the amount of aroma, a decrease in the quality of the aroma, and ultimately a decline in the quality of the tobacco leaves. [0003] One aspect of the decline in the quality of Yunyan 85 is that the potassium content in the tobacco leaves cannot keep up. Therefore, in recent years, in order to increase the potassium content in the tobacco leaves, relevant s...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01C21/00A01G1/00
Inventor 李廷轩张锡洲李静郑子成王永东余海英刘涛陈光登
Owner SICHUAN AGRI UNIV
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