Walnut late frost freezing damage investigation method

Abstract

The invention discloses a walnut late frost freezing damage investigation method. The method comprises the following steps of: 1) selecting investigation units: selecting three one-year-old fruiting branches from a walnut plant as investigation units: 2) determining investigation indexes: taking the selected investigation units and freezing conditions of all the annual leafing-phase shoots, compound leaves, female buds and male inflorescences on the branches as investigation indexes; 3) carrying out investigation and statistical analysis: carrying out investigation after pre-setting a freezingdamage level standards, and carrying out statistical analysis on a sample number of each level of the corresponding investigation indexes; 4) calculating freezing damage indexes; and 5) determining afreezing damage level of each branch. According to the method, walnut late frost freezing damage sample data is digitalized, a freezing damage index investigation and statistical analysis table is established, and preset standard data is taken as references to determine the freezing damage indexes and freezing damage levels of the investigation indexes, so that the problems that the present walnut late frost freezing damage investigation indexes and freezing damage level standards are non-uniform, the investigation methods are bad in operability, different investigators have more subjective judgement and the errors are relatively large are solved.

Description

technical field [0001] The invention belongs to the technical field of fruit tree planting and management and protection, and in particular relates to a method for investigating walnut late frost damage. Background technique [0002] Walnut is an important oil and nut tree species, one of the four major dry fruits in the world, and the most important economic forest tree species in my country. Walnuts are rich in nutritional value and have the reputation of long live fruit, longevity fruit and health treasure. Walnut kernels are rich in essential amino acids, fatty acids, vitamins and a large amount of calcium, phosphorus, iron and other ingredients, which can not only moisturize the skin, but also prevent premature graying and shedding of hair. At the same time, in terms of improving human health, walnut kernel is also an important auxiliary material of Chinese patent medicines. It has the effects of smoothing Qi and nourishing blood, relieving cough and reducing phlegm, m...

AI Technical Summary

Problems solved by technology

[0004] The object of the present invention is to: provide a kind of investigation method of walnut late frost damage, by digitizing the data of walnut late frost damage, and using the preset standardized data as a reference to determine the investigation index and freeze damage level, to solve the current investigation method of walnut late frost damage investigation Inconsistent standards for indicators and levels of freezing damage, rough survey methods and other reasons lead to inaccurate survey results and large errors

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