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Method for quickly identifying drought resistance of spring corn in northern arid regions

An identification method and drought resistance technology, applied in the field of agricultural science, can solve the problems of blind selection of suitable regional varieties and multiple and miscellaneous corn varieties, and achieve the effect of strong operational practicability and broad application prospects.

Active Publication Date: 2019-06-25
INST OF DRY LAND FARMING SHANXI ACAD OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to provide a rapid identification method for drought resistance of spring maize in the northern arid area, which solves the problems that the current production of maize varieties is complicated, and producers are blind when choosing regionally suitable varieties.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0021] The specific identification method of the present embodiment includes the following steps:

[0022] Step 1. Select the well-developed seedlings of the spring maize variety to be identified and the well-developed seedlings of the control variety, and plant them on land in the northern arid area where the annual natural precipitation is less than 350 mm. Each variety is planted in one plot, and each plot is planted in two rows. After planting, water the seedlings so that the moisture in the 0-50cm soil layer reaches 80% ± 5% of the field water holding capacity. No more watering in the later stage, and a total of 50 cubic meters / mu of water during the whole growth period;

[0023] Step 2, at the jointing stage or tasseling stage or filling stage of spring corn, measure the interval period of spinning and loose powder, plant height, functional leaf area, dry matter accumulation at ear stage, relative water content of leaves, water loss rate of detached leaves, Water use eff...

Embodiment 2

[0026] The specific identification method of the present embodiment includes the following steps:

[0027] Step 1. Select the well-developed seedlings of the spring maize variety to be identified and the well-developed seedlings of the control variety, and plant them on land in the northern arid area where the annual natural precipitation is less than 350 mm. Each variety is planted in one plot, and each plot is planted in two rows. After planting, water the seedlings so that the moisture in the 0-50cm soil layer reaches 80% ± 5% of the field water holding capacity. No more watering in the later stage, and a total of 50 cubic meters / mu of water during the whole growth period;

[0028] Step 2, at the jointing stage or tasseling stage or filling stage of spring corn, measure the interval period of spinning and loose powder, plant height, functional leaf area, dry matter accumulation at ear stage, chlorophyll content, net photosynthetic rate, relative water content of leaves, Wat...

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Abstract

The invention discloses a method for quickly identifying drought resistance of spring corn in northern arid regions, and relates to the technical field of agricultural science. The method comprises the following steps that 1, selecting seedlings of spring corn varieties to be identified for drought field area planting, and setting a control group; 2, measuring 6-9 form or ecological or physiological indexes at the jointing stage or tasseling stage or filling stage of spring corns, and establishing a drought resistance evaluation system through the measured indexes; 3, carrying out rapid identification and evaluation on the drought resistance of the regional spring corn variety by adopting a method of firstly carrying out field visual identification and secondly carrying out test determination. The method provides reliable basis for corn production variety selection, is closely attached to actual production research, is high in operation practicability, provides research basis for an existing high-yield corn planting technology, and has wide 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...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N33/00G01D21/02A01G22/20
Inventor 刘化涛黄学芳李杰杨柯张伟张冬梅黄明镜王娟玲赵聪
Owner INST OF DRY LAND FARMING SHANXI ACAD OF AGRI SCI
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