Method for carrying out fertilizer application in accordance with crop projection area and plant height

Abstract

The invention discloses a method for carrying out fertilizer application in accordance with a crop projection area and a plant height. The method comprises the following steps: firstly, establishing a fertilizer application amount standard table according to the growth day number, the crop projection area, the projection area daily change, the plant height, the plant height daily change and fertilizer application amounts after crops in a standard plant sample region are planted, and then measuring the crop projection area and the plant height value in a region to be subjected to the fertilizer application; and calculating the crop projection area, the projection area daily change, the plant height, the plant height daily change and the fertilizer application amounts of the crops with the same growth day number, which are planted in the fertilizer application amount standard table of the standard plant sample region, according to a certain rule, so as to obtain the intraday fertilizer application amount of the crops. The method disclosed by the invention can be used for a modern agriculture precision irrigation and fertilizer application field and is good for controlling the growth speed of the crops, improving the utilization rate of fertilizers, reducing agricultural non-point source pollution and the dependency on a user knowledge level of crop fertilizer application management and reliving the labor intensity; the method can be used for guiding the fertilizer application of greenhouse cultivated crops including lettuces and asparagus lettuces which take the stalks as harvested products.

Description

technical field [0001] The invention belongs to the field of precise irrigation and fertilization in modern agriculture, in particular to a method for fertilizing according to crop projected area and plant height. Background technique [0002] my country's protected horticulture has developed rapidly, and the total area of ​​protected agriculture ranks first in the world, which has played a huge role in promoting social and economic development. However, due to the large output, large amount of fertilizer required, high soil fertility consumption, and the use of soilless cultivation in many areas, facility cultivation often has symptoms such as imbalance or deficiency of main nutrients such as nitrogen and potassium. affect crop yield and quality. Some producers blindly pursue fast crop production in order to go on the market ahead of schedule, which not only causes waste of fertilizers and non-point source pollution of the environment, but also causes excessive growth of c...

AI Technical Summary

Problems solved by technology

The disadvantage of these methods is that they cannot dynamically adjust the amount of fertilizer required by crops according to the actual growth information of crop plants. If applied at one time, the concentration of fertilizer will diffuse and penetrate, which will cause waste of fertilizer and environmental pollution. It is difficult to be accurate and efficient. fertilization

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