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Method for rapidly identifying water-saving drought resistance of wheat

A technology of drought resistance and wheat, applied in the direction of scattering characteristic measurement, measuring device, and material analysis through optical means, to achieve the effect of simple operation, uniform soil nutrient, and low cost

Inactive Publication Date: 2021-04-13
CHINA AGRI UNIV
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Problems solved by technology

However, the use of NDVI index instead of wheat yield for drought resistance identification has not been reported.

Method used

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  • Method for rapidly identifying water-saving drought resistance of wheat
  • Method for rapidly identifying water-saving drought resistance of wheat
  • Method for rapidly identifying water-saving drought resistance of wheat

Examples

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Embodiment 1

[0042] Example 1, Rapid Identification of Water-Saving and Drought-Resistance of Winter Wheat

[0043] 1. Test settings

[0044] The drought-resistant variety screening test was carried out at the Wuqiao Experimental Station of China Agricultural University from 2017 to 2019. The varieties used in the test include: Hengguan 35, Heng S29, Heng 136, Heng 4399, Heng 4444, Heng 6632, Zhongmai 23, Zhongmai 155, Zhongmai 175, Zhongmai 1062, Nongda 139, Nongda 399, Nongda 3636, Nongda 3753, Nongda 5181, Gaoyou 2018, Gaoyou 5766, Gaoyou 5818, Xingmai 18, Xingmai 20, Shimai 22, Jimai 22, Xiaoyan 81, Linhan 6, Shannong 32, Zhoumai 18, Liangxing 66, Shinong 086, Jimai 418 and Cang 6005 were provided by the Agricultural College of China Agricultural University.

[0045] 2. From the earing of wheat, go to the experimental field at 9 am every day to observe the flowering of wheat, and record the specific flowering dates of different varieties.

[0046] 3. Acquisition of time series dynam...

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Abstract

The invention discloses a method for rapidly identifying water-saving drought resistance of wheat by utilizing a remote sensing vegetation index NDVI. The method comprises the following steps: a variety comparison test, acquisition of an NDVI value of a canopy after flowering, construction of an NDVI index, and calculation of an index for evaluating the water-saving drought resistance of the wheat variety based on NDVI related indexes. On the basis of drought resistance evaluation tests of different wheat varieties, canopy NDVI information of different varieties is obtained, indexes are constructed to replace a yield to calculate drought resistance indexes, and therefore a purpose of variety identification and selection is achieved. The new method overcomes the defects of time consumption and labor consumption of traditional yield measurement, and can quickly and nondestructively meet the requirements of drought resistance identification of wheat varieties. The method provided by the invention can be used for identifying the drought resistance of the wheat varieties and breeding new drought-resistant and water-saving varieties, and plays an important role in guaranteeing grain safety and meeting ever-increasing material requirements of people.

Description

technical field [0001] The invention relates to the field of water-saving and drought-resistance identification of winter wheat varieties, in particular to a method for rapidly identifying water-saving and drought-resistance of wheat by using remote sensing vegetation index NDVI. Background technique [0002] In arid and semi-arid ecological environments, water is the main factor limiting food production and seriously threatening global food security and social stability. According to relevant statistics, about one-third of the world's arable land is located in arid and semi-arid regions, involving more than 20 countries and regions (Sivakumar et al.2005). In China, the total area of ​​arid regions is close to 3 million square kilometers, accounting for nearly 40% of the land area, of which the extremely arid land area is about 700,000 square kilometers. There is no doubt that drought has become the most important natural disaster in China. Wheat is the ration crop with the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G01N21/3563G01N21/359G01N21/47A01G22/20
CPCA01G22/20G01N21/3563G01N21/359G01N21/4738G01N2021/1797
Inventor 王志敏周晓楠王剑张英华李伟孙振才胡乃月刘影
Owner CHINA AGRI UNIV
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