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作者： Guo Jianhua Chen Liping Wang Xiu Chen Tianen Ma Wei Meng Zhijun Fu Weiqiang National Engineering Research Center for Information Technology in Agriculture

Precision fertilization is one of the important measure in precision *** carries out different fertilizer management according to the differences of soil *** core of precision fertilization is to get the largest fertilizer *** this study,we carried out precision fertilization of wheat through the topdressing by intelligent spatial decision,which is based on the variability of soil fertility and spatial variability of production for many years to form prescription map which is to be set up in precision rate fertilizer *** results showed that the yield coefficient of precision fertilization had a decrease of 1.08-1.23 percentage points and the precision fertilization which is decision-making based on spatial variability of soil fertility can save 9.82%of fertilizer than the farmer which uniform fertilization,it also can increase income by 227.35 Yuan per *** fertilization can increase the content of chlorophyll during the green stage to the jointing stage,2-3.79%for chlorophyll a;2.3%for chlorophyll b.

关键词： Variable Fertilization prescription map Field Scale Nitrogen

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DESIGN OF FARMLAND GIS FOR PRECISION AGRICULTURE

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Chinese Geographical Science 2003年第1期13卷 20-24页

作者： AN Kai, XIE Gao-di, LENG Yun-fa, XIAO Yu (Institute of Geographical Sciences and Natural Resources Research, the Chinese Academy of Sciences, Beijing 100101, P. R. China) Institute of Geographical Sciences and Natural Resources Research the Chinese Academy of Sciences Beijing P. R. China

Precision Agriculture, also known as Precision Farming, or prescription Farming, is a modern agriculture technology system, which brings ' precision' into agriculture system. All concepts of Precision Agriculture are established on the collection and management of variable cropland information. As the tool of collecting, managing and analyzing spatial data, GIS is the key technology of integrated Precision Agriculture system. This article puts forward the concept of Farmland GIS and designs Farmland GIS into five modules, and specifies the functions of the each module, which builds the foundation for practical development of the software. The study and development of Farmland GIS will propel the spreading of Precision Agriculture technology in China.

关键词： precision agriculture farmland GIS site-specific crop management prescription map

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维普期刊数据库

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Variable rate fertilizer application technology for nutrient management:A review

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International Journal of Agricultural and Biological Engineering 2023年第4期16卷 11-19页

作者： Pranav Pramod Pawase Sachin Madhukar Nalawade Girishkumar Balasaheb Bhanage Avdhoot Ashok Walunj Pravin Bhaskar Kadam Anil G Durgude Mahesh R Patil Department of Farm Machinery and Power Engineering Dr.ASCAETMPKVRahuri(MS)India CAAST-CSAWM MPKVRahuri(MS)India Department of Soil Science and Agricultural Chemistry MPKVRahuri(MS)India Department of Statistics MPKVRahuri(MS)India

The efficient and effective application of fertilizers to crops is a major ***,constant rate or equal dose of fertilizer is applied to each *** rate fertilizer application across entire field can result in over or under incorporation of *** application is influenced by soil parameters as well as geographical variation in the *** nutrient management depends on selection of nutrient,application rate and placement of nutrient at the optimal distance from the crop and soil *** rate technology(VRT)is an input application technology that allows for the application of inputs at a certain rate,time,and place based on soil properties and spatial variation in the field or *** are two approaches for implementing VRT,one is sensor based and another is map *** sensor based approach;with suitable sensors,measures the soil and crop characteristics on-the-go calculating the amount of nutrients required per unit area/plant and micro controlling unit which uses suitable algorithms for controlling the flow of fertilizer with required amount of *** map based approach;Grid sampling and soil analysis are used to create a prescription *** to the soil and crop conditions,the microcontroller regulates the desired application *** sensor-based VRT system includes a fertilizer tank,sensors,GPS,microcontroller,actuators,and other components,whereas the map-based system does not require an on-the-go *** approaches of VRT for fertilizer application in orchards and field crops are reviewed in this *** use of this advance technology surely increases the fertilizer use efficiency;improve crop yield and profitability with reduced environment impacts.

关键词： nutrient sensor prescription map spatial variation VRT

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Remote Sensing and Precision Agriculture Technologies for Crop Disease Detection and Management with a Practical Application Example

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Engineering 2020年第5期6卷 528-532页

作者： Chenghai Yang Aerial Application Technology Research Unit Agricultural Research ServiceUS Department of AgricultureCollege StationTX 77845USA

Remote sensing technology has long been used to detect and map crop *** and satellite imagery acquired during growing seasons can be used not only for early detection and within-season management of some crop diseases,but also for the control of recurring diseases in future *** variable rate technology in precision agriculture,site-specific fungicide application can be made to infested areas if the disease is stable,although traditional uniform application is more appropriate for diseases that can spread rapidly across the *** article provides a brief overview of remote sensing and precision agriculture technologies that have been used for crop disease detection and ***,the article illustrates how airborne and satellite imagery and variable rate technology have been used for detecting and mapping cotton root rot,a destructive soilborne fungal disease,in cotton fields and how site-specific fungicide application has been implemented using prescription maps derived from the imagery for effective control of the *** overview and methodologies presented in this article should provide researchers,extension personnel,growers,crop consultants,and farm equipment and chemical dealers with practical guidelines for remote sensing detection and effective management of some crop diseases.

关键词： Crop disease Airborne imagery High-resolution satellite imagery Cotton root rot prescription map Variable rate application

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