Portable multiway crop leaf nitrogen nutrient index nondestructive monitoring device

Abstract

The invention relates to a lossless testing device for nitrogen nutritive index of crop leaves based on canopy reflection spectrum. It belongs to technology field of crop production, which is specially used in online detecting and precious fertilizing guidance of crop field production. It is mainly composed of bracket, spectrum signal collection and host computer. Spectrum signal collection adopts design of 4 waveband and 8 channels. Hardware system is composed of analog signals conditioning module, A / D transfer module, chip module, memory module, display module, keyboard module, communication module and power management module. Software system is programmed by C51 chip language. Detection of nitrogen content, nitrogen accumulation and leaf area index of canopy not only ensures high detecting precision, but also provides three data indexes of different facets to analyze nitrogen nutritive level of crop, which guarantees reliability and stability of detecting results. It can be applied in field operation, online lossless detecting, field online manage and guidance for agricultural production personnel.

Description

1. Technical field [0001] The invention relates to a portable nondestructive and real-time monitoring device for nitrogen nutrition indicators of crop (rice and wheat) leaves, belongs to the technical field of crop production, and is specially used for real-time monitoring and precise fertilization management of crop field production. 2. Background technology [0002] The non-destructive monitoring of crop nitrogen nutrition indicators is one of the important technical supports of precision agriculture. Its purpose is to grasp the growth status of crops in real time, release monitoring diagnosis and forecast in time, guide the quantitative management and precise input of nitrogen fertilizer, and predict the yield and total yield of crops. It provides important basis and reference. [0003] Nitrogen is the most important element among the six macroelements necessary for crop growth, and is an essential element for the composition of chloroplasts and proteins in crops. The la...

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Problems solved by technology

[0013] The purpose of the present invention is to overcome the defects of existing monitoring devices, and develop a portable multi-channel non-destructive monitoring device for nitrogen nutrition indicators of crop leaves, which is suitable for field operations, real-time non-destructive monitoring and real-time management guidance in the field for front-line personnel in agricultural production

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