Method for recommending crop fertilizing amount

Abstract

The invention provides a method for recommending the amount of fertilization of crops. On a plot, according to the known planting information of the plot, including the parameters related to the crops and fertilizers of the plot, the unit area of ​​the crops to be planted is obtained According to the balance value of nitrogen, phosphorus and potassium nutrients, the amount of nitrogen, phosphorus and potassium nutrients used for planting crops is recommended. The method of the present invention overcomes the unfavorable factors such as long cycle and high cost of traditional soil testing and fertilization, and recommends fertilization through the nutrient input-output balance of customary fertilization without measuring soil or plant nutrient content, which is easy to operate and popularize , low cost and other characteristics, it is a scientific and precise multi-balanced fertilization method.

Description

Technical field:

[0001] The invention belongs to the technical field of crop fertilization, in particular to a method for recommending the amount of fertilizer applied to crops. Background technique:

[0002] At present, the main methods recommended for crop fertilizer application are:

[0003] 1. Empirical fertilization method: farmers determine the amount of fertilization according to their own experience. The disadvantage of this method is that it does not consider the basic conditions of the soil and the amount of fertilizer required by crops, which may easily lead to excessive or insufficient fertilization.

[0004] 2. Soil fertility index method: According to the measured soil effective nutrients, the soil effective nutrient fertility index is verified with the biological relative index, and the corresponding grading range value is determined. At the same time, experiments on the amount of fertilizer applied were set up on fields with different nutrient fertility inde...