A method for investigating walnut late frost damage

Abstract

The invention discloses a method for investigating walnut late frost damage, which comprises the following steps: 1) selecting an investigation unit: selecting three 1-year-old fruiting female branches from walnut plants as the investigation unit; Branches and all new shoots, compound leaves, female flower buds and male inflorescences on the female branch in the current year are used as investigation indicators; 4) Calculate the freezing damage index; 5) Determine the freezing damage level of a single plant. The present invention digitizes the walnut late frost damage sample data, establishes the statistical analysis table for the freeze damage index investigation, and then uses the preset standardized data as a reference to determine the freeze damage index and freeze damage level of the investigation index, and solves the current walnut late frost freeze damage investigation index and freeze damage The grading standard is not uniform, the investigation method is poor in operability, and different investigators have many subjective judgments and large errors.

Description

A kind of investigation method of walnut late frost damage technical field The invention belongs to fruit tree planting and management and protection technical field, relate in particular to a kind of walnut late frost damage investigation method. Background technique Walnut is an important oilseed and nut tree species, is one of the four major dried fruits in the world, and is also the most important economic forest in my country. species. Walnut is rich in nutritional value and has the reputation of longevity, longevity and health preservation. Walnuts are rich in essential amino acids Acids, fatty acids, vitamins and a large amount of calcium, phosphorus, iron and other ingredients can not only moisturize the skin, but also prevent premature graying and hair loss. falling effect. At the same time, walnut kernels are also an important excipient of Chinese patent medicines in promoting human health. Phlegm, lungs and kidneys, nourishing the skin and other effects...

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

Images