background With the continuous improvement of economic development level. Large-scale breeding bases, family farms, planting bases are also gradually developed. However, with the expansion of
Background As we all know, nitrogen, phosphorus and potassium are the most important elements in plant growth. Nitrogen, phosphorus and potassium are often used as
Overview Generally speaking, it is about 2000us/cm. The quality of water depends on its water quality indicators. Good drinking water quality should meet the corresponding
background Swimming as a very popular sport, there are not a few people who are keen on it. And swimming is also a facade sport
Summarize Available surface fresh water in nature, though, is only a tiny, tiny fraction of the earth’s total water supply. Is indeed the human society
Overview Changes in the earth’s environment are causing extreme weather more often than ever before. The possibility of flooding from heavy rains has also increased.
Background What is the value of parks? Of course, it provides more people to play and relax. But these days, there are so many things
Summarize The world is full of living beings. Water is the source of life, human life and life without water. Water is the source of
Overview The discharge of waste water from various factories undoubtedly exacerbates the deterioration of water quality. With the advent of water quality monitors, plans for
Background The areas with the worst water quality in China are mainly concentrated in the cities with large population density in the north. More than
Backdrop The hardness of water quality is a more popular view. The correct criterion is TDS in the water. This value can be measured with
Overview The ph level meter is also known as the aqueous pH tester. It is one of the intelligent online chemical analysis instruments. It is widely