Can a soil sensor stay in the soil for a long time?

It can be buried in the soil for a long time.

Soil moisture monitoring.

Soil temperature and humidity sensor has a wide range of applications in today's agricultural field, the main role is to monitor soil humidity and temperature, suitable for scientific experiments, water-saving irrigation, greenhouses, flowers and vegetables, grassland pastures, soil rapid measurement, plant culture, sewage treatment, grain storage and measurement of water content and temperature of various particulate matter.

Soil sensors must be buried in the field for an extended period of time, and their displacement must not affect the accuracy of the test and its realism as a function of time and ambient temperature.

Soil sensor depth.

To get a clear picture of the humidity conditions within the root area, measurements need to be taken at multiple depths at each probe location. Multiple depth readings are a good indication of the average humidity throughout the root region and can also provide important information about the humidity at a particular depth. For example, a set of sensors within the root area can be used to assess the water available to the plant, while a deeper sensor below the root area measures the deep penetration of water (below the plant's availability).

Multiple depth readings can be taken by using a multi-depth soil moisture probe ("moisture profile probe") or several point measurement probes. The shallowest sensor should be about 4 inches (10 cm) below the surface; The deepest part should be at least 20 years deeper than the base of the root area of the mature plant. Additional sensors should be placed in 4-6 inch (10-15 cm) increments within the range.

Root Zone Summary. For irrigation purposes, water measurements at all depths within the root zone need to be combined into a single number, which represents the average root zone water content. This can be done in the following ways:

Add up the measurements at each sensor level.

Average those measurements.

Weighted average measurements.

Regardless of how much is obtained, this number becomes the "root zone summary".

The root zone summary calculation should only include data from sensors within the root zone. In the weighted average calculation, the weights of the sensors below the root zone are set to zero. Since the size of the root zone changes as the plant grows, it is possible to change the weight factor of the probe as the season progresses.

The accuracy is poor, the linearity is poor, the surface is easy to corrode and oxidize, and the measurement is even more inaccurate.

Soil moisture sensor, go out and no longer be afraid of flowers and no one watering, introduce the use of soil moisture sensor in detail, and introduce the principle of LM393 voltage comparator.

Compliance with regulations and resumption of supply.

How does a soil moisture sensor work? How to monitor soil moisture with Arduino alarm? （1）

Typical soil moisture sensors use the principle of electromagnetic pulses. It measures the apparent permittivity of the soil according to the propagation frequency of electromagnetic waves in the medium ( ), so as to obtain the soil volumetric water content ( v).

Characteristics that a soil moisture sensor should have:

1. The standard current loop transmission technology is used to make it have strong anti-interference ability, long transmission distance, high measurement accuracy and fast response speed.

2. The influence of soil quality is small, the application area is wide, the best is low, and it is suitable for China's national conditions.

3. High stability, easy installation and maintenance.

4. It has good sealing, can be buried in the soil for a long time, and is not corroded.

Introduction to Soil Moisture Sensors:

Soil moisture sensor aka: soil moisture sensor, soil moisture sensor, soil moisture sensor. It is mainly used to measure soil volume and moisture content, and to monitor soil moisture and agricultural irrigation and forestry protection.

Functions and features.

1. The sensor is designed to be compact in size, easy to carry, and simple to install, operate and maintain.

2. The structural design is reasonable, and the steel probe is not embroidered to ensure the service life.

3. The outside is encapsulated with epoxy resin pure colloid, which has good sealing, can be directly buried in the soil and is not corroded.

4. The influence of soil quality is small, and the application area is wide.

5. High measurement accuracy, reliable performance, to ensure normal operation.

6. Fast response speed and high data transmission efficiency.

Scope of application. It is widely used in water-saving agricultural irrigation, greenhouses, flowers and vegetables, grassland pastures, soil rapid measurement, plant cultivation, scientific experiments and other fields.

Moisture sensors are the simplest humidity sensors. There are two main types of moisture-sensitive components: resistive type and capacitive type.

Humidity can be measured by coating the substrate with a film made of a moisture-sensitive material, and when water vapor from the air is adsorbed on the moisture-sensing film, the resistivity and resistance values of the component change.

Moisture-sensitive capacitors are generally made of polymer film capacitors, and commonly used polymer materials include polystyrene, polyimide, butyric acid acetate, etc. When the ambient humidity changes, the dielectric constant of the moisture-sensitive capacitor changes, and its capacitance also changes, and its capacitance changes proportional to the relative humidity.

The accuracy of the electronic moisture sensor can reach 2-3%RH, which is higher than the accuracy of hygroscopic measurement.

The linearity and anti-pollution of the moisture-sensitive element are poor, and when detecting the ambient humidity, the moisture-sensitive element should be exposed to the environment to be measured for a long time, which is easy to be polluted and affect its measurement accuracy and long-term stability. This aspect is not as good as the wet and dry bulb humidity measurement method.

Organic fertilizer is very effective, it has to slowly decay into the soil, and as the water is absorbed by the roots, it is still there for several months.

How long does organic fertilizer last in the soil? It depends on the temperature and humidity, as well as the degree of decay when buried.

The summer months will definitely disappear without a trace, and the winter or dry days will have no effect.

It's good to strengthen the acid, the soil is too acidic and plants often grow.

Buried non-degradable plastic products or heavy metal pollution.

The landlord is talking about fertilizer, right? There are many types of fertilizers, some are used before planting, after planting, and some are used before and after watering.

Look at the instructions, just use it whenever you want.

If you really don't know how to use it, you can use it after planting, so that you can ensure that the fertility is used on the crop.

Fertilizers are time-limited, and it is impossible to provide fertility all the time, so it is necessary to use them again after a certain period of time.

However, some fertilizers are highly fertile, and using too much or too often at one time will cause crops to burn and die, so we must pay attention to it.

The watchtower lord adopted.

SHT is used to measure the relative humidity of the air relative to the saturated vapor pressure of the gas. And the soil is a medium + liquid, and the object is different. On the market, SHT and a waterproof and breathable membrane are buried in the soil as a soil moisture sensor, which is a deception.

Moreover, if SHT is used in high humidity such as soil for a long time, it will lead to irreversible damage to its measurement performance, and the error will become larger and larger.

Aoki Sensing, a professional provider of environmental sensor technology.

For example, dysentery bacilli can survive in the soil for 22 days and 142 days, Mycobacterium tuberculosis can survive for about 1 year, roundworm eggs can survive for 315 days and 420 days, and Salmonella can survive for 35 days and 70 days.

If you want to know about this bacteria, you can go to the frozen soil in the Himalayas to find a bacterium, and many bacteria can still survive when the temperature is right.

There are many growth-inhibiting germs in the soil.

I still don't know anything about biology.

Rhizobia of soybeans, interdependents?

Aluminum phosphide will decompose quickly when exposed to water in the soil and will not remain, but will soon release highly toxic phosphine gas. Aluminium phosphide is usually used as a broad-spectrum fumigation insecticide, mainly used to fumigate a variety of pests: grain storage pests of grain, grain storage pests of seeds, outdoor rodents in burrows, etc.