Establishment and application of mineral element nutrient diagnosis system for leaves of Xinjiang almond

Abstract

The invention discloses establishment and application of a mineral element nutrient diagnosis system for leaves of Xinjiang almond. According to the invention, through acquisition and analysis of samples of almond leaves from different regions and production areas in Xinjiang, the conditions of richness and shortage of nutrients in Xinjiang almond trees are known, thereby providing scientific bases for fertilization demands for realizing high-quality and high-yield production of Xinjiang almond. Concentrations of macroelements consisting of N, P, K, Ca and Mg and trace elements consisting of Fe, Mn, Cu and Zn in the Xinjiang almond leaf samples are determined by using a chemical analysis method, and the conditions of richness and shortage of nutrients in the Xinjiang almond trees are analyzed by using deviation from optimum percentage; the normal value range of standard values of mineral elements in the leaves of Xinjiang almond is established, so the mineral element nutrient diagnosis system for the leaves of Xinjiang almond and an application scheme of the system are established, and the system and the application scheme have extensive practicality.

Description

technical field [0001] The invention relates to the technical field of almond nutrition diagnosis. Specifically, the present invention relates to the technical field of establishment and application of a Xinjiang almond leaf mineral element nutrition diagnosis system. Background technique [0002] Xinjiang Shache is the main production area of ​​almonds in my country, with an existing cultivation area of ​​nearly 60,000hm 2 For many years, the output of almonds in Xinjiang has been unstable. In addition to climate reasons, the intake of plant nutrition is also an important aspect that determines the yield. In recent years, the leaf nutrition of plants has been evaluated by means of leaf nutrition diagnosis. The methods include comparative curve method, many Angular diagram method, critical value method, probability classification method, etc., but these diagnostic methods have certain limitations, nutritional diagnosis method ( Diagnosis and Recommendation Integrated Syste...

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Problems solved by technology

[0008] The present invention is aimed at the planting status of almonds in different regions and different production areas in Xinjiang. According to the fact that Xinjiang almonds are currently seriously malnourished, the yield is unstable and the quality is declining, and the sustainable production capacity of the orchard is not strong. Objectively realized, especially reflecting the insufficient nutrient input, lack of pertinence, and the fact that the contradiction between fruit tree nutrition and yield and quality has become increasingly prominent. The chemical method was used to determine the nutrient concentration in the leaves of 90 most representative almond orchards in Xinjiang. The 10 mineral elements nitrogen, phosphorus, potassium, calcium, magnesium, iron, copper, zinc, manganese and boron are divided into 30 high-yield, 30 middle-yield, and 30 low-yield gardens according to the level of production. Mineral elements were tested for normality using the proc univariate process. For the 9 elements in almond leaves that met the normality test, two nutritional diagnosis methods DRIS and DOP were used, supplemented by various high- and low-yielding gardens. After comparing the coefficients of variation of the elements, it is concluded that the nutritional diagnosis based on the DOP theory is appropriate, and the nutrient ranking of the mineral elements obtained by the theory is followed by the probability classification method for the 9 elements that conform to the normal distribution, that is, 4 points The mineral element grading standard that 5-point method draws, the nutrient sorting and grading standard of final mineral element promptly constitute the present invention

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