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Evaluation method for discriminating nitrogen high-efficiency utilization varieties

An evaluation method and variety technology, which is applied in the field of evaluation of nitrogen efficient utilization wheat varieties, to achieve strong operability, simple operation, and the effect of improving soil quality

Pending Publication Date: 2020-10-13
INST OF PLANT NUTITUION & RESOURCE ENVIRONMENT HENAN ACADEMY OF AGRI SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

So far, there is no unified method at home and abroad to judge whether a certain wheat variety is a nitrogen-efficient variety

Method used

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  • Evaluation method for discriminating nitrogen high-efficiency utilization varieties
  • Evaluation method for discriminating nitrogen high-efficiency utilization varieties
  • Evaluation method for discriminating nitrogen high-efficiency utilization varieties

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] Taking wheat varieties as an example, an evaluation method for distinguishing high-efficiency nitrogen utilization varieties was constructed and the results were analyzed.

[0027] 1.1 Selection of evaluation indicators

[0028] 1.1.1 Index screening principles

[0029] A commonly used index for evaluating the nitrogen utilization efficiency of wheat varieties was selected, and the index had different degrees of differences in measuring the nitrogen utilization efficiency of wheat varieties. The primary evaluation index for screening varieties is the grain yield performance of the variety, and the yield performance is the foundation of all other evaluation indicators. The nitrogen harvest index at the mature stage can show the nitrogen use efficiency, and the nitrogen accumulation in the aboveground part of the plant can show the nitrogen absorption efficiency. Considering that under a certain soil nitrogen supply level, factors such as the size of the ability to abso...

experiment example 1

[0064] 1. Test material:

[0065] Varieties tested: Zhengmai 113, Zhoumai 32, Luomai 31, Xinong 511, Cunmai 8, Luomai 26, Luomai 29, and Luomai 34, a total of 8 varieties.

[0066] 2. Experimental design

[0067] The test was set at the Fluvo-aquic Soil Experimental Station of the Modern Agriculture Research and Development Base in Henan Province. The soil type was fluvo-aquic soil. The nutrient status of the soil samples from 2018 to 2019 was pH = 8.06, and soil organic matter (SOM) = 17.0g kg -1 , available phosphorus (Olsen-P) = 13.8mg·kg -1 , Exchangeable K=88.4mg·kg -1 , soil total nitrogen (Total N) = 0.77g kg -1 , soil total phosphorus (Total P) = 0.94g kg -1 .

[0068] (1) Field planting: set three fertilization treatments NPK (normal fertilization) and NK (blank control). A split-plot experimental design was adopted, with the fertilizer as the main plot and the tested varieties as the sub-plots, and the tested varieties were planted in three plots treated with f...

experiment example 2

[0085] 1. Test material:

[0086] The tested varieties: Zhongyu 1211, Yangao 58, Xinong 979, Zhengmai 379, Xuke 168, Zhongmai 895, Xinmai 30, Zhoumai 27, Zhoumai 30, a total of 9 varieties.

[0087] 2. Experimental design

[0088] The test was set at the Fluvo-aquic Soil Experimental Station of the Modern Agriculture Research and Development Base in Henan Province. The soil type was fluvo-aquic soil. The nutrient status of the soil samples from 2018 to 2019 was pH = 8.06, and soil organic matter (SOM) = 17.0g kg -1 , available phosphorus (Olsen-P) = 13.8mg·kg -1 , Exchangeable K=88.4mg·kg -1 , soil total nitrogen (Total N) = 0.77g kg -1 , soil total phosphorus (Total P) = 0.94g kg -1 .

[0089] (1) Field planting: set three fertilization treatments NPK (normal fertilization) and NK (blank control). A split-plot experimental design was adopted, with the fertilizer as the main plot and the tested varieties as the sub-plots, and the tested varieties were planted in three pl...

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Abstract

The invention discloses an evaluation method for discriminating nitrogen high-efficiency utilization varieties, which belongs to the field of fertilizer efficiency evaluation and plant variety screening. The method comprises the following steps: screening indexes, determining index weight W, standardizing index parameters and evaluating results. According to the invention, indexes for evaluating the nitrogen efficiency of wheat are screened out and an evaluation method is established according to the selected indexes (the normal nitrogen fertilizer application yield, the nitrogen fertilizer utilization rate, the nitrogen demand for producing 100 kg of grains per time, the agronomic efficiency of the nitrogen fertilizer, the partial productivity of the nitrogen fertilizer and the nitrogen harvesting index); whether a certain variety of wheat is a nitrogen efficient utilization variety or not is judged objectively by comparing the differences of different evaluation index parameters; themethod is beneficial to improving the soil quality, can also provide a basis for the use of nitrogen fertilizer, and also has important significance for the development of high-yield agriculture.

Description

technical field [0001] The invention belongs to the fields of fertilizer efficiency evaluation and plant variety screening, and in particular relates to an evaluation method for discriminating wheat varieties with high nitrogen utilization. Background technique [0002] Wheat is the main crop in northern my country and the second largest grain crop in China. Nitrogen is the largest mineral nutrient element necessary for crop growth and development, and its nutritional efficiency directly affects the yield and quality of crops, and is known as the "element of life". The form of nitrogen determines the nitrogen utilization efficiency of wheat. Among the many forms of nitrogen, nitrogen is mainly in the form of NO 3 － and NH 4 + This form is absorbed by the root system of wheat and plays an irreplaceable role in ensuring the increase and stability of grain production. However, nitrogen has high mobility, is not easy to be absorbed by the soil, and is easy to be lost with ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06Q10/06G06Q50/02
CPCG06Q10/06393G06Q50/02
Inventor 宋晓黄绍敏黄晨晨张珂珂岳克
Owner INST OF PLANT NUTITUION & RESOURCE ENVIRONMENT HENAN ACADEMY OF AGRI SCI
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