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Wheat critical nitrogen concentration dilution curve model and application thereof

A dilution curve, critical nitrogen technology, applied in application, special data processing application, fertilization method, etc., can solve problems such as less research

Pending Publication Date: 2021-08-10
INST OF PLANT NUTITUION & RESOURCE ENVIRONMENT HENAN ACADEMY OF AGRI SCI
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, there are few studies on the nitrogen concentration dilution curve model of winter wheat

Method used

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  • Wheat critical nitrogen concentration dilution curve model and application thereof
  • Wheat critical nitrogen concentration dilution curve model and application thereof
  • Wheat critical nitrogen concentration dilution curve model and application thereof

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Embodiment Construction

[0024] The following clearly and completely describes the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only some of the embodiments of the present invention, but not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0025] 1.1 Experimental design

[0026] The present invention has been carried out in Yuanyang County, Xinxiang City, Henan Province for 2 consecutive years at the "National Long-term Monitoring and Experimental Station for Aquivo-aquic Soil Fertility and Fertilizer Benefits" (34°47'N, 113°40'E), and different varieties and nitrogen fertilizer levels have been carried out in different years The results of the wheat experiment are shown in Table 1, and the distribution and soil properties of each experiment are shown in Table 2.

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Abstract

The invention discloses a wheat critical nitrogen concentration dilution curve model. The formula is Nc = 5.25 DW<-0. 472> or Nc = 5.309 DW<-0. 47>, wherein Nc is the critical nitrogen concentration value of the dry matter mass of the overground part of the wheat, and DW is the maximum value of the accumulation amount of the dry matter mass of the overground part of the wheat. Nitrogen level tests of multiple varieties are set in different years to find out a theoretical basis for objectively and quantitatively judging the nitrogen nutrition status of wheat plants, the winter wheat critical nitrogen concentration dilution curve model is established, nitrogen fertilizer operation and quantitative regulation in the region are guided according to the model, and a basis is provided for precise fertilization in wheat production.

Description

technical field [0001] The invention relates to the technical field of crop planting, in particular to a wheat critical nitrogen concentration dilution curve model and its application. Background technique [0002] Nitrogen is one of the important nutrients for crop growth and development, which affects the yield and quality of crops. Insufficient nitrogen fertilizer will limit the growth of crops, and excessive application of nitrogen fertilizer will easily cause waste of resources and environmental pollution. Reasonable application of nitrogen fertilizer can promote the absorption of nitrogen by crops, increase the accumulation of dry matter, and then increase the yield of crops. [0003] Wheat is sensitive to nitrogen surplus and deficit during the growth process. Traditional nitrogen diagnosis methods mainly rely on expert experience, mainly including subjective diagnosis of leaf color, growth, symptoms, etc. This method has large errors and low accuracy. Chemical diagn...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): G06F30/20A01C21/00
CPCG06F30/20A01C21/005
Inventor 宋晓许端阳黄绍敏张珂珂黄晨晨岳克冯伟贺利郭斗斗张水清郭腾飞王沙沙李杰张远洋
Owner INST OF PLANT NUTITUION & RESOURCE ENVIRONMENT HENAN ACADEMY OF AGRI SCI
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