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Method for determining leaf nitrogen, phosphorus and potassium at almond fruit development stage

A technology of fruit development period and determination method, which is applied in the field of determination of nutrient elements in almond fruit development period, can solve the problems of insensitivity to identification of P and K elements, damage to plants and leaves, and slow detection speed, so as to reduce planting costs and improve The effect of almond yield and measurement data accuracy

Inactive Publication Date: 2016-07-27
HORTICULTURE INST OF XINJIANG ACAD OF AGRI SCI
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Problems solved by technology

[0007] The purpose of the present invention is to overcome the problems of chemical detection equipment, slow detection speed, and damage to plants and leaves when chemically analyzing the nutrient elements of perennial fruit trees such as almonds, and the existing spectral analysis technology is mainly used for annual herbaceous crops. The real-time detection of N element is not sensitive to the identification of P and K elements, and a method for the determination of nitrogen, phosphorus and potassium in leaves of almond fruit development period is provided.

Method used

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  • Method for determining leaf nitrogen, phosphorus and potassium at almond fruit development stage

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specific Embodiment approach 1

[0018] Specific embodiment one: the assay method of leaf nitrogen, phosphorus and potassium of present embodiment almond fruit growth stage carries out according to the following steps:

[0019] First measure the reflectance of almond leaves in the fruit development period; then calculate the content of N, P and K elements according to the calculation formula of N, P and K;

[0020] The calculation formula of N element in almond fruit setting stage leaves is Y=-2051.4471-7099.5965X-6048.4479X 2 ; where Y is the N element content of almond fruit-setting leaves, in g / kg, and X is LgR 823 +lgR 880 , R 823 is the reflectance of almond leaf surface to light with a wavelength of 825nm in the fruit setting stage, R 880 is the reflectance of the leaf surface of the almond fruit setting stage to the light with a wavelength of 880nm;

[0021] The formula for calculating the N element in leaves of almond fruit in the expansion stage is Y=(21.8812+39.8456A+24.3772A 2 +5.1255A 3 ) / (0...

specific Embodiment approach 2

[0025] Specific embodiment two: the difference between this embodiment and specific embodiment one is: in the four directions of east, west, south and north of the central part of the almond tree crown to be tested, randomly select the growth health, and the new shoot bar 1 / 2~2 / 3 of the year Measure the reflectance of N pieces of healthy leaves with no pests and diseases and no mechanical damage between the lengths, where N≥3. Other steps and parameters are the same as those in Embodiment 1.

specific Embodiment approach 3

[0026] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the spectrometer is calibrated before each data collection. Other steps and parameters are the same as those in Embodiment 1.

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Abstract

The invention provides a method for determining leaf nitrogen, phosphorus and potassium at an almond fruit development stage and relates to a method for determining nutrient elements at the almond fruit development stage. The problem that when the nutrient elements of perennial almond trees are chemically analyzed, a chemical detection device is needed, is low in detection speed and damages plants and leaves and the like is solved, and the problem that an existing spectrum analysis technique is mainly used for real-time detection of an N element of annual herb crops and is not sensitive to P and K element identification is solved. The determination method comprises the steps that the reflectivity of almond leaves at the almond fruit development stage is firstly determined, and then the contents of N, P and K elements are calculated according to an N, P and K calculation formula. The method can determine the N, P and K elements in the almond leaves at a fruit setting stage and the N element content in the almond leaves at a fruit swelling stage by utilizing the spectrum analysis technique, and determined data is accurate.

Description

technical field [0001] The invention relates to a method for measuring nutrient elements in almond fruit development period. Background technique [0002] Almond (Amygdalus communis L.) is also known as Badam, almond apricot, and its trade name is American Almond. Its nucleolus not only has high oil content, unsaturated fatty acid content, but also contains a large amount of protein, essential amino acids, sugar, inorganic salts, vitamins, calcium, magnesium, sodium, iron and other elements, and its nutritional value is extremely high. Good nourishing products and important medicinal materials for the prevention and treatment of cardiovascular diseases such as hypertension are in short supply in the international market and have important economic value. Almonds have been planted in my country for 1,300 years. The cultivation distribution and production areas are mainly located in the southern part of Xinjiang, which has unique ecological conditions and resource advantages ...

Claims

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Application Information

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IPC IPC(8): G01N21/31G01N21/359
CPCG01N21/314G01N21/359G01N2021/3148
Inventor 庄红梅徐叶挺师帅谢辉樊丁宇张雯王强韩宏伟韩立群韩守安杨波
Owner HORTICULTURE INST OF XINJIANG ACAD OF AGRI SCI
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