Method for carrying out fertilizer application at vegetative growth phase in accordance with change of crop plant height

Abstract

The invention discloses a method for carrying out fertilizer application at a vegetative growth phase in accordance with the change of a crop plant height. The method comprises the following steps: firstly, establishing a fertilizer application amount standard table according to the growth day number, the plant height, the plant height daily change and fertilizer application amounts after crops in a standard plant sample region at the vegetative growth phase are planted, and then measuring the crop height and the plant height daily change at the vegetative growth phase in a region to be subjected to the fertilizer application; and calculating the crop plant height, the projection area daily change value 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 at the vegetative growth phase.

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 in the vegetative growth period according to the height change of crop plants. Background technique [0002] The early stage of crop growth is dominated by vegetative growth, and the growth of plants in this period is dominated by roots, stems, and leaves. Because the organic matter needed for reproductive growth is mainly provided by vegetative growth, the growth of vegetative organs is poor, the reproductive organs will not be well developed, and the output is not high. However, if the vegetative growth is too vigorous, most of the organic matter will be consumed by the vegetative growth, and the reproductive growth will not get enough organic nutrients. In facility production, it is often impossible to accurately fertilize according to the amount of fertilizer required for the actual growth of crops. Therefore,...

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

Images