At present, precision agriculture has involved many aspects of agricultural production such as fertilization, precision sowing, crop pest control, weed control and moisture management. Thus the concept of precision fertilization comes from precision agriculture.
B. Wideness of application
The precision agriculture soil nutrient information management system and automatic variable fertilizer application technology (hereinafter referred to as precision fertilizer application technology) are the most mature. Therefore, it can be said that the core technology of precision agriculture is precision fertilization technology.
C. Agricultural fertilization technology
The concept of precision fertilization comes from precision agriculture. Precision agriculture is a system that implements a set of modern farming operation techniques and management based on spatial variation positioning, timing and quantification.
It consists of ten systems supported by modern information technology. Namely, global positioning system, farmland information collection system. Farmland remote sensing monitoring system, farmland GIS. Agricultural expert system, intelligent farm equipment system. Environmental monitoring system, soil nutrient spring information management and networked management system and training system.
E. Precision fertilization link
At present, precision agriculture has involved many links of agricultural production, such as fertilization, precision sowing, crop pest control, weed control and moisture management.
F.Extensive research and application
Precision agriculture soil nutrient information management system and automatic variable fertilization technology (hereinafter referred to as precision fertilization technology) are the most mature. Secondly, in soil nutrient management, developed countries have incorporated soil types, soil production potential, yield increasing effects of different fertilizers, fertilization patterns of different crops, and historical fertilization and yield.
G. Main technical points of precision fertilization
1. Collection and analysis of soil buried nutrients
However, in the planting area where Precise fertilization is carried out, soil agrochemical samples are collected at selected points. Therefore, laboratory analysis and summarize the relevant data to establish a database of soil types and traits.
2. Study the effect of soil fertilization on yield increase
Because the yield change relationship between soil nutrients and fertilization variables is studied based on the multi-year fertilization planting trials in the plot. So plotting about soil nutrients and fertilizer application yield increase benefit function to confirm the relevant functions and obtain fertilization parameters.
3. Formulation of target crop yield and fertilizer requirement ratio
Similarly, the crop yield is formulated according to the production requirements. Finally, the total crop nutrient requirements, the potential nutrient supply from the soil, and the amount and proportion of fertilizer to be applied are then derived from the yield.
4. Fertilizer preparation
According to the identified location and specific crop target yield, refer to the total fertilizer application of a crop to ensure and proportion Therefore, suitable single-quality fertilizer is selected and mixed to produce special BB fertilizer. In short determine the fertilizer application period, location and application amount