The problem with the conventional method
Sensor type, timer automatic watering machine, water retention agent, etc.
For the sensor type, you can see well when compared to the work of the aquarium of thermostat and heater.
The figure below
- Depending on the position of embedding the sensor, and then become quite different moisture data.
- Therefore, in some cases water leakage and water shortages occur simultaneously.
- After all, in order to avoid water shortage, we can only manage to do in the extra water in the safe side.
Timer type
The figure below
- There is a high water pressure is needed product, in the case of with the pump, it is important to note such as battery exhaustion.
- It is difficult to individual nozzle adjustment, further, for each nozzle, variations in the water supply amount is large.
- The same as the sensor type, also prone water leakage and water shortage.Therefore, there are a large amount of water in the safe side.
Even in a simple and easily visible product, it is problematic
The figure below
- Drip nozzle resulting in out immediately water (empirically, 30 minutes or a few hours). On the contrary, sometimes the water is not nearly out.
- Even because water comes out in the expansion of the hot air, there is a problem that not always large amount of necessary water at high temperatures.
- Well, using the tape spear SIMERUS water, it is very economical better to automatically adjust the water supply in the 24 hours of continuous low-speed.
For water retention agent
For water retaining material (water retention agent),
“Water” has a considerable weight, considering that the volume also fairly, it is difficult to rely only on it.
In addition, it is that you are in trouble, similar to our wallet, as a physiological trend of the plant, if a large amount of water is in the soil, the plant is not much savings, it will consume a large amount of water , soil moisture is not very long-lasting.
It is to be misunderstood, because disposable diapers of water retention agents, troubled as easily immersion Midas.
Therefore, those of such performance has been used.
In other words, the sprinkling water retention agent for paper diapers for the soil to be held the rain or irrigation water,
The roots of the plant might not be always easy to water absorption (can not be expected to have much effect). It should be noted, but also at special soil with a large water retention capacity.
In addition, if the water retention will be heavy soil, it will be disadvantageous in rooftop greening.
In addition, there are various types to soil water retention agent, it has its own problems. It is not a universal.
Therefore, even today, I think that it not be said that much popular.
In Japan, there is also such as the example of the use of soil water retention agent such as golf courses.
However, there is also the recent economic situation, it’s getting less.
The latest temperature-sensitive type, when the temperature is equal to or greater than the set value, water will leach from water retention agent.
However, such as when the humidity is high, so just because the temperature is high does not mean that necessarily requires a large amount of water to the plant, moisture control including the temperature settings for the soil is quite difficult.
Recently, well, even though it has been introduced, in fact it is very difficult.
Hydrophilic string
Commercial hydrophilic straps, the water level of the water source is changed, will change from a small amount of water to the large amount of water.
Therefore, it is difficult to water supply management.
In addition, PET plastic bottles use the tape to spear SIMERUS water, the problem does not occur at all because the surface of the water are made at a constant height to the portion of the cap. In screwing of the cap, the adjustment is also possible.
