Sugar-increasing and acid-decreasing method for citrus cultivar cv. Shimian Huangguogan

A technology for citrus and acid reduction, applied in the agricultural field, can solve the problems of affecting the application effect of K element and other nutrient elements, affecting the absorption of other nutrient elements, increasing fruit quality, etc., so as to achieve easy learning and mastery, flavor and comprehensive The effect of quality improvement, flavor and overall quality improvement

Inactive Publication Date: 2012-10-24
SICHUAN AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

K fertilizer has the effect of increasing fruit quality, but at the same time, the application of K fertilizer will affect the absorption of other nutrient elements, and finally affect the application effect of K element and other nutrient elements

Method used

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  • Sugar-increasing and acid-decreasing method for citrus cultivar cv. Shimian Huangguogan
  • Sugar-increasing and acid-decreasing method for citrus cultivar cv. Shimian Huangguogan
  • Sugar-increasing and acid-decreasing method for citrus cultivar cv. Shimian Huangguogan

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0016] 1.2.1 Research on sugar and acid metabolism of Huangguogan fruit during growth and development

[0017] 1.2.1.1 Research purpose

[0018] By studying the sugar-acid metabolism of Huangguogan fruit during the growth and development period, the sugar-acid metabolism of Huangguogan was obtained under conventional management conditions, and the key enzymes that affect the sugar accumulation and organic acid degradation of Huangguogan fruit were analyzed. Provide a theoretical basis for research on sugar-increasing and acid-lowering technologies.

[0019] 1.2.1.2 Research content

[0020] (1) Research materials:

[0021] Select the test tree plants with the same level of management in the early stage, medium growth vigor, ecological conditions, and basically the same tree shape, and take a single plant as a plot, and repeat 3 times.

[0022] (2) Sample collection

[0023] From June 2011 to March 2012, samples were taken for the tested tree plants every one month or so. ...

Embodiment 2

[0031] 2.2.2 Effects of Phosphorus and Potassium Fertilizers on Increasing Sugar and Decreasing Acid in Huangguotang

[0032] 2.2.2.1 Research purpose: To obtain the optimal P and K nutritional status of key enzyme activities during the fruit growth and development period when the fruit of Huangguokan is high in sugar and low in acid.

[0033] 2.2.2.2 Research content:

[0034] (1) Fertilization amount selection

[0035] Determination of phosphorus and potassium nutrients in the soil and leaves of the test site, combined with the tree vigor and the target yield of the year, estimated the amount of phosphorus fertilizer (P 2 o 5 ) is 0.6Kg / plant, and the amount of potassium fertilizer applied (K 2 O) is 0.7Kg / strain. Converted into potassium sulfate (active ingredient 50%) is 2.80Kg / plant, converted into ammonium phosphate (active ingredient 44%) is 2.70Kg / plant.

[0036] (2) Fertilization treatment

[0037] The annual ammonium phosphate and potassium sulfate application...

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Abstract

The invention discloses a sugar-increasing and acid-decreasing method for citrus cultivar cv. Shimian Huangguogan. According to guaranteed nutrient standards of sprouting fertilizer for early phase of flowering, content of quick-acting potassium in soil is 22.29-23.83mg/kg, and content of available phosphorus is 37.84-42.47mg/kg. According to the guaranteed nutrient standards of fading fertilizer for early phase of young fruit, content of quick-acting potassium in soil is 33.42-38.39mg/kg, and content of available phosphorus is 38.51-41.95mg/kg. According to the guaranteed nutrient standards of fruit growth fertilizer for early phase of fruit swelling, content of quick-acting potassium in soil is 47.35-50.57mg/kg, and content of available phosphorus is 53.27-59.30mg/kg. According to the guaranteed nutrient standards of coloration fertilizer for early phase of coloration, content of quick-acting potassium in soil is 87.89-90.90mg/kg, and content of available phosphorus is 103.71-106.20mg/kg. Ratio of sugar-acid in fruits of citrus cultivar cv. Shimian Huangguogan is increased to 109.84-136.07%, content of soluble sugar is increased to 56.95%-58.40%, and content of organic acid is decreased to 25.20-32.90%. Sugar increasing and acid decreasing are effective, and flavor and comprehensive quality of the fruits of the citrus cultivar cv. Shimian Huangguogan are improved evidently.

Description

technical field [0001] The invention relates to the technical field of agriculture, in particular to a method for increasing sugar and reducing acidity of tangerines. Background technique [0002] Huangguo mandarin is a hybrid tangerine formed by the natural hybridization of tangerine and orange. It is native to Xinmian Town, Shimian County, Sichuan Province. It is technically supported by Sichuan Agricultural University. A new variety of mandarin oranges developed in the Duhe River Basin and surrounding areas. In 2011, it was formally approved by Sichuan Provincial Variety Approval Committee. Huangguo mandarin has the characteristics of super late maturity, high yield, high quality, and storage and transportation resistance. It is especially suitable for planting in dry and hot valleys at an altitude of 780-1200 meters. Its market period is from March to April every year. In the off-season of fruit, sales prospects are bright. There are only more than 30,000 mu of yellow...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01G1/00A01C21/00
Inventor 汪志辉蒲雪荔熊博严巧巧王雪飞廖风玲范倩倩
Owner SICHUAN AGRI UNIV
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