The main production organization mode of China's planting industry can not be separated from decentralized management. Decentralized management, gentle slopes, sensitive nitrogen nutrient input, and satisfaction of extravagant potassium absorption are features of China's flue-cured tobacco cultivation. Decentralized management has led farmers to lack enthusiasm for the application of precision agriculture technology. Does the difference in nutrient input and the variation in soil nutrients in complex terrain conditions have gradual changes? The empirical research on the accurate fertilization of flue-cured tobacco under typical topographic conditions in decentralized operations is of great significance to the application of precision agriculture technology. The soil nutrient analyzer is an instrument for measuring soil nutrients and is indispensable in research work.
Predecessors have conducted a lot of research. Jiang Cheng compared and studied the variation of nutrients in the management of Beijing Changyang Farm and Chenliuying Village in Bengbu City, Hebei Province. The spatial distribution of soil nutrients has a direct relationship with farmers' fertilization habits and management levels. Huang Shaowen studied soil nutrient variation and zoning management under the conditions of decentralized management in Yutian County of Hebei Province and Lingxian County of Shandong Province. It shows that scattered management of farmland in the North Plain can provide accurate nutrient management. Analysis of vanmeirenne's average sampling area of ​​1.7hm2 in Flanders, France, showed that the variation of soil properties in small plots is mainly due to structural variation, which can meet the spatial variation analysis requirements of precision agriculture. According to Wang Xinzhong's analysis of the spatial variation of soil nutrients in a 100m × 100m grid of 87hm2 field in Jixian County, Henan Province, the variation of soil alkaline dissolved nitrogen does not have gradual changes, and other soil attribute variations mainly come from structural factors. The farmland studied by the above soil nutrient measuring instrument is relatively flat, while the cultivation of the flue-cured tobacco in China is mainly in the mountains and hills. The research on the precision fertilization of flue-cured tobacco on the decentralized slopes has not been reported.
The soil nutrient tester found that under the decentralized operating conditions, the partition strategy is the core of precision fertilization technology. Bai Lu et al. used GIS to interpolate soil nutrients, based on soil statistics for soil nutrient and fertilization recommendations. In order to classify different plots in the study area, cluster analysis is widely used in the establishment of management zones. Soil multi-element testing requires information extraction and principal component analysis is applied in the management zone. The above-mentioned zoning management methods have universal applicability, and the division of ridges and slopes in gentle slopes results in differences in nutrients between the blocks. For the management of natural plots as the management center, soil nutrient interpolation and the establishment of management zoning methods have not yet been reported.
Predecessors have conducted a lot of research. Jiang Cheng compared and studied the variation of nutrients in the management of Beijing Changyang Farm and Chenliuying Village in Bengbu City, Hebei Province. The spatial distribution of soil nutrients has a direct relationship with farmers' fertilization habits and management levels. Huang Shaowen studied soil nutrient variation and zoning management under the conditions of decentralized management in Yutian County of Hebei Province and Lingxian County of Shandong Province. It shows that scattered management of farmland in the North Plain can provide accurate nutrient management. Analysis of vanmeirenne's average sampling area of ​​1.7hm2 in Flanders, France, showed that the variation of soil properties in small plots is mainly due to structural variation, which can meet the spatial variation analysis requirements of precision agriculture. According to Wang Xinzhong's analysis of the spatial variation of soil nutrients in a 100m × 100m grid of 87hm2 field in Jixian County, Henan Province, the variation of soil alkaline dissolved nitrogen does not have gradual changes, and other soil attribute variations mainly come from structural factors. The farmland studied by the above soil nutrient measuring instrument is relatively flat, while the cultivation of the flue-cured tobacco in China is mainly in the mountains and hills. The research on the precision fertilization of flue-cured tobacco on the decentralized slopes has not been reported.
The soil nutrient tester found that under the decentralized operating conditions, the partition strategy is the core of precision fertilization technology. Bai Lu et al. used GIS to interpolate soil nutrients, based on soil statistics for soil nutrient and fertilization recommendations. In order to classify different plots in the study area, cluster analysis is widely used in the establishment of management zones. Soil multi-element testing requires information extraction and principal component analysis is applied in the management zone. The above-mentioned zoning management methods have universal applicability, and the division of ridges and slopes in gentle slopes results in differences in nutrients between the blocks. For the management of natural plots as the management center, soil nutrient interpolation and the establishment of management zoning methods have not yet been reported.
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