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 present situation of almond planting in different regions and different production areas in Xinjiang, and based on the objective realization that Xinjiang almonds are currently seriously malnourished, the yield is unstable, the quality is degraded, and the sustainable production capacity of the orchard is not strong, especially reflecting the lack of nutrient input and not strong pertinence , the actual contradiction between nutrition and yield quality of fruit trees is becoming more and more prominent, the mineral elements nitrogen, phosphorus, potassium, calcium, magnesium, iron and copper in the leaves of 90 most representative almond orchards in Xinjiang were determined by chemical method , zinc, manganese and boron are 10 kinds of mineral elements, and then divided into 30 high-yield, 30 middle-yield, and 30 low-yield gardens according to the level of production. The utilization of mineral elements in high- and low-yield gardens proc univariate The normality test was carried out during the process. For the 9 elements in almond leaves that met the normality test, two nutritional diagnosis methods DRIS and DOP were used. It is advisable to use the nutrition diagnosis based on the theory of mineral elements, and then use the probability classification method, that is, the 4 points and 5 points method to obtain the classification standard of mineral elements for the 9 elements that conform to the normal distribution, and finally The nutrient sorting and grading standards of mineral elements constitute the present invention

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