Water and fertilizer integration four-control fertigation method

Abstract

The invention discloses a water and fertilizer integration four-control irrigation fertilizing method. The method is composed of time control of fertigation, control of fertilizing amount, control of nutrient proportion and control of soil humidity. The method aims at moisture requirement and root depth of different crops for realizing accurate control of the soil humidity and irrigation depth, can limit the irrigation water and a fertilizer in a root zone scope, can avoid loss of volatilization and seepage due to excess fertilization, and realizes high efficiency utilization of water and fertilizer. The method can realize accurate fertilization and saves labor. The fertilizing control is carried out according to the crop nutrient requirement rules, and the method can control the time and space of the fertigation in scientific and reasonable mode, can guarantee good growth of crops, realizes high yield and stable production, can control the environment pollution due to fertilizer loss and volatilization due to excess fertilization, and mitigates the soil hardening and continuous cropping obstacles.

Description

technical field [0001] The invention relates to the technical field of water and fertilizer integration, in particular to a control method for water and fertilizer integration irrigation and fertilization. Background technique [0002] Water and fertilizer integration technology is the development direction of modern agriculture and an important means of precise fertilization. According to different environmental conditions and crop water and fertilizer demand rules, using scientific and reasonable control methods to implement water and fertilizer integration is the only way to achieve efficient irrigation and fertilization. However, since the water and fertilizer integration technology has not been used for a long time in China, people generally lack both application experience and in-depth research on the application technology. There is still a lack of operational methods for the control of irrigation and fertilization frequency and fertilization concentration, which make...

AI Technical Summary

Problems solved by technology

However, since the water and fertilizer integration technology has not been used for a long time in China, people generally lack both application experience and in-depth research on the application technology. The control of irrigation and fertilization frequency and fertilization concentration, etc., still lacks a strong operational method, which makes the integrated application of water and fertilizer difficult and the implementation effect is not good.

[0003] In the disclosed technology, although there are also people who have proposed a control scheme for the period of fertigation, the amount of fertigation and the cycle of fertigation, they are not specific and comprehensive enough.

For example, the irrigation and fertilization period should be determined in the water and fertilizer sensitive period and the strong demand period of the crops. The amount of fertilizer should be divided into the total amount of fertilizer applied and the amount of fertilizer applied in stages. In different stages of crop growth, different fertilizer concentrations and nutrient ratios should be controlled. Soil Humidity control should also consider the degree of soil wetness and wet depth, etc. These aspects need to have corresponding value determination and control methods, and the existing technology does not provide a clear and systematic application plan

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