Abstract:0.52。 In order to real-time detect the plant nitrogen content, a non-destructive crop growth analyzer is developed. It is made up of a sensor and a controller. The optical part of the sensor is made up of four optical channels and four photodiodes. Two channels receive the sunlight and the other two receive the reflected light from the crop canopy at the wavebands of 610nm and 1220nm. The circuit part of the sensor is made up of power supply unit, amplifying unit and a wireless module. The controller has functions such as keyboard input, LCD display, data storage, data upload, and so on. Calibration tests show that the optical part has a high accuracy and the wireless transmission also has a good performance. The field tests comparing with a commercial spectrometer (Quality Spec made by ASD Co.) also show an acceptable correlation of 0.52. |
Transactions of the Chinese Society for Agriculture Machinery (CSAM), in charged of China Association for Science and Technology (CAST), sponsored by CSAM and Chinese Academy of Agricultural Mechanization Science(CAAMS), started publication in 1957. It is the earliest interdisciplinary journal in Chinese which combines agricultural and engineering. It always closely grasps the development direction of agriculture engineering disciplines and the published papers represent the highest academic level of agriculture engineering in China. Currently, nearly 8,000 papers have been already published. There are around 3,000 papers contributed to the journal each year, but only around 600 of them will be accepted. Transactions of CSAM focuses on a wide range of agricultural machinery, irrigation, electronics, robotics, agro-products engineering, biological energy, agricultural structures and environment and more. Subjects in Transactions of the CSAM have been embodied by many internationally well-known index systems, such as: EI Compendex, CA, CSA, etc.
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