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A method for evaluating drought resistance of rice based on multi-gradient multi-trait comprehensive drought resistance index

An evaluation method and multi-gradient technology, applied in horticultural methods, rice cultivation, botanical equipment and methods, etc., can solve problems such as fuzzy qualitative evaluation, difficulty in repeating, and incomplete results, and achieve strong versatility, accurate evaluation, and results accurate effect

Active Publication Date: 2021-11-30
CROP INST SICHUAN PROVINCE ACAD OF AGRI SCI +2
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Problems solved by technology

[0003] In order to solve the above problems, the present invention provides a method for comprehensive evaluation of rice drought resistance based on a multi-gradient multi-character comprehensive drought resistance index. The method of drought resistance solves the shortcomings of the existing evaluation methods that lack the fuzzy qualitative evaluation under the condition of quantitative water control, and the shortcomings of the results are not comprehensive enough, difficult to repeat, and unable to form a general standard method, and can more accurately evaluate the drought resistance of rice. Provide scientific evaluation basis for drought resistance evaluation and drought resistance breeding of rice varieties

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  • A method for evaluating drought resistance of rice based on multi-gradient multi-trait comprehensive drought resistance index
  • A method for evaluating drought resistance of rice based on multi-gradient multi-trait comprehensive drought resistance index
  • A method for evaluating drought resistance of rice based on multi-gradient multi-trait comprehensive drought resistance index

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Embodiment 1

[0078] A method for evaluating drought resistance of rice based on a multi-gradient multi-character comprehensive drought resistance index, the method comprising the following steps:

[0079] (1) Prepare the following rice varieties: Minghui 63 (MH63), Shuhui 527 (SH527), II-32B, Bala, R17739-1 and IR64, and raise seedlings respectively to obtain rice seedlings of each variety;

[0080] (2) Pot experiments were carried out on rice seedlings of various varieties. The pot experiments included an experimental group and a control group. The experimental conditions were all the same, and the mature rice of the experimental group and the control group were obtained respectively;

[0081] The gradient quantitative water control cultivation steps are as follows:

[0082] A, prepare a plurality of identical planting pots, load respectively the cultivation soil of identical weight, and measure the field water holding capacity and the initial water content of described soil;

[0083] B...

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Abstract

The invention discloses a rice drought resistance evaluation method based on a multi-gradient multi-character comprehensive drought resistance index, which belongs to the technical field of agricultural production and research. The method for evaluating the drought resistance of rice proposes that under the condition of multi-gradient quantitative water control, the multi-character drought resistance index of rice is obtained, and the multi-gradient multi-character comprehensive drought resistance index of rice is used as the basis for the comparison of rice drought resistance. There are evaluation methods lacking the defects of fuzzy qualitative evaluation under quantitative water control conditions, and the results are not comprehensive enough, difficult to repeat, and unable to form a general standard method. It can more accurately evaluate the drought resistance of rice and provide a basis for drought resistance evaluation and drought resistance of rice varieties. Breeding provides scientific evaluation basis.

Description

technical field [0001] The invention belongs to the technical field of agricultural production, and in particular relates to a rice drought resistance evaluation method based on a multi-gradient multi-character comprehensive drought resistance index. Background technique [0002] Rice is one of the most important food crops for human beings, and it is also the crop that consumes the most water. Under the traditional rice production mode, its water production efficiency (WaterUseEffcency, water use efficiency) is 0.6~1.04kg rice / m 3 Water, that is, it takes about 0.96-1.67m to produce 1kg of rice 3 water. Due to the decrease of agricultural arable land and population expansion, the demand for rice continues to increase, while regional and seasonal droughts occur frequently, and agricultural water resources are gradually scarce, which poses serious challenges to rice production. Therefore, the research on water-saving and drought-resistant rice technology and the developmen...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): A01G22/22A01G7/06G01N33/00G06Q10/06G06Q50/02
CPCA01G7/06A01G22/22G01N33/0098G06Q10/06393G06Q50/02
Inventor 康海岐张鸿王士梅高利军潘英华康家荣高菊李其勇李星月朱从桦向运佳杨晓蓉
Owner CROP INST SICHUAN PROVINCE ACAD OF AGRI SCI
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