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Fertilizing method based on nitrogen nutrition nondestructive detection of winter rapes

A technology for non-destructive testing of rapeseed nitrogen, applied in fertilization methods, fertilization devices, horticultural methods, etc., can solve the problems of large manpower, material resources, unfavorable promotion and application, time lag, etc., and achieves low cost, convenient promotion and application, and results. precise effect

Inactive Publication Date: 2015-05-06
HUAZHONG AGRI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The traditional nitrogen nutrition detection is mostly based on laboratory chemical analysis. This method consumes a lot of manpower and material resources in terms of sample collection, measurement and data analysis, and the cost is high. There is a time lag in fertilization guidance. Conducive to popularization and application, so there is an urgent need for convenient and non-destructive nitrogen nutrition detection technology in production

Method used

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  • Fertilizing method based on nitrogen nutrition nondestructive detection of winter rapes
  • Fertilizing method based on nitrogen nutrition nondestructive detection of winter rapes
  • Fertilizing method based on nitrogen nutrition nondestructive detection of winter rapes

Examples

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Effect test

Embodiment 1

[0021] Example 1 Detection of nitrogen nutrition in winter rapeseed and construction of nitrogen fertilizer real-time topdressing model

[0022] the following figure 1 The examples are only used to illustrate and explain the present invention, but are not used to limit the protection scope of the present invention.

[0023] Select representative popularized varieties in production such as Brassica napus popularized variety "Double Low" variety "Huayouza No. 9" as an example (the implementation of the present invention is not limited to this variety) to illustrate the detection method and implementation steps of the present invention.

[0024] (1) In the winter rapeseed area in the Yangtze River Basin of China, the seeds of Brassica napus "Huayouza No. 9" are sown on the seedbed in late September (this embodiment is September 27, 2012) each year, and in November Transplanted on the 6th, the planting density was 7500 plants / 667 square meters. A total of 5 nitrogen fertilizer t...

Embodiment 2

[0037] Example 2 Using the SPAD value of sensitive leaves to detect nitrogen nutrition in winter rapeseed and apply nitrogen fertilizer real-time topdressing model

[0038] In order to further verify and apply the suitability of the present invention in the detection of nitrogen nutrition in winter rapeseed, based on the above research results, field experiments were carried out in the same test base using the same rape variety in 2013-2014.

[0039] (1) On September 27, 2013, the seeds of the Brassica napus variety "Huayouza No. 9" were sown in the seedbed, and transplanted on October 30, with a planting density of 7500 plants / 667 square meters. Respectively set normal nitrogen treatment (pure nitrogen application 180kg / hm 2 ) and a nitrogen fertilizer optimization treatment (that is, the amount of total nitrogen fertilizer application is variable, and the amount of each topdressing application is recommended by the nitrogen fertilizer topdressing model based on the sensitive...

Embodiment 3

[0046] Example 3 Using the SPAD value of sensitive leaves to detect nitrogen nutrition in winter rapeseed and compare the work efficiency of traditional nitrogen nutrition detection

[0047] In order to further explore the advantages of the present invention in labor-saving, time-saving, quick and accurate results compared with the traditional laboratory chemical analysis method in the detection of nitrogen nutrition in Brassica napus, it was adopted in the above-mentioned test base in 2013-2014. A field experiment of the same rape variety was carried out.

[0048] (1) The seeds of the Brassica napus variety "Huayouza No. 9" were sown on the seedbed on September 30, 2013, and transplanted on November 2, with a planting density of 7500 plants / 667 square meters. According to pure nitrogen (calculated as N), phosphorus (P 2 o 5 In terms of), potassium (in K 2 O meter) dosage is 180, 90 and 120kg / hm respectively 2 , plus commercial boron fertilizer 15kg / hm 2 , are used as bas...

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Abstract

The invention belongs to the technical fields of crop nutrition diagnosis and fertilization, and in particular relates to a fertilizing method based on nitrogen nutrition nondestructive detection of winter rapes. The fertilizing method is characterized by comprising the following steps: testing a SPAD value by selecting the key growing period and time of the rapes, determining the sensitive leaf position and leaf part subjected to the nitrogen nutrition detection, establishing a critical leaf SPAD value detection method, carrying out real-time nitrogenous fertilizer topdressing by virtue of obtained detection values, and the like. The fertilizing method disclosed by the invention can be used for evaluating and detecting the nitrogen nutrition sufficiency and deficiency level of the rapes relatively accurately; and compared with a conventional laboratory chemical analysis method, the method, as a nondestructive rape nitrogen nutrition status detection and fertilization method, is real-time and rapid.

Description

technical field [0001] The invention belongs to the technical field of crop nutrition diagnosis and fertilization, and in particular relates to a fertilization method for non-destructive detection of nitrogen nutrition in winter rapeseed. Background technique [0002] Nitrogen is one of the essential elements for crop growth and yield formation. With the continuous increase of nitrogen fertilizer use in my country, its relatively low nutrient use efficiency has produced many adverse effects on the environment. Rapid and accurate nitrogen nutrition detection is of great significance to coordinate the synchronization and matching of crop nitrogen demand and soil nitrogen supply in time and space, reduce nitrogen loss in soil-crop systems, and achieve high crop yield and efficiency. The traditional nitrogen nutrition detection is mostly based on laboratory chemical analysis. This method consumes a lot of manpower and material resources in terms of sample collection, measurement...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): A01C21/00A01G7/00
Inventor 李岚涛任涛鲁剑巍李小坤吴礼树
Owner HUAZHONG AGRI UNIV
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