A rapid identification method for drought resistance of spring maize in northern arid regions

Abstract

The invention discloses a method for rapidly identifying the drought resistance of spring maize in the northern arid region, and relates to the field of agricultural science and technology. The method of the present invention comprises the following steps: Step 1, select the seedlings of the spring maize variety to be identified to be planted in the dry field area, and set up a control group at the same time; Step 2, measure 6-9 A morphological or ecological or physiological index, and then establish a drought resistance evaluation system through the measured index; Step 3, adopt the method of visual identification in the field first, and then test and measure, quickly identify and evaluate the drought resistance of spring maize varieties in the region. The invention provides a reliable basis for the selection of corn production varieties, is closely related to the actual production research, has strong operational practicability, not only provides a research basis for the current high-yield corn planting technology, but also has broad application prospects in production.

Description

technical field

[0001] The invention belongs to the field of agricultural science and technology, and in particular relates to a rapid identification method for drought resistance of spring maize in northern arid regions. Background technique

[0002] In the arid regions of northern my country, drought is the main reason for low and unstable corn yields, and the selection of suitable drought-resistant corn varieties is the most important way to solve the above problems. Therefore, scientifically and accurately evaluate the drought resistance of corn varieties , is the first problem to be solved in selecting suitable spring maize varieties.

[0003] According to statistics, the world's arid and semi-arid areas account for about 34.9% of the earth's land area and 42.9% of the cultivated land area, while the land area of ​​China's arid, semi-arid and semi-humid and arid areas accounts for about 52.5% of the total land area. China is the second largest corn producer in the world...