Soil testing method for soil testing and formula fertilization
Sample collection is an important part of soil testing. If it is not representative, it will affect the authenticity of soil nutrients. In the sampling should pay attention to the following points: First, there must be enough sampling points, with special tools for earth-sucking, generally each sampling point should have 15-20 sampling points. The fewer sample points, the worse the representation. The second is that sampling points should be evenly distributed. The more concentrated the sampling points are, the smaller the representativeness of sampling points is. Third, do not take the soil in the fields, trenches, forest belts, and dunghills. Fourth, the depth of sampling must be consistent, do not suddenly deep and shallow. Fifth, the proportion of the upper and lower levels of sampling should be the same.
With the improvement of people's living standards, people pay more and more attention to the importance of physical health. More and more people will use their spare time to exercise, run, ride, climb mountains and so on.
But then comes the safety of sports. A little too much force or improper operation will cause injury. It was originally for the sake of health, but it was only a few days after exercise, which is a bit more than worth the loss.
Nowadays, more and more people begin to pay attention to their health. Running has become the first choice of most people because of its relatively low technical threshold. With the rise of running craze, a variety of equipment has also quietly jumped into the sight of runners, from professional running shoes, sweat-absorbing clothes and pants, wearable electronic devices, and shin and patella band and other protective devices. Running is often prone to sprains, falls and other accidents. Choosing a knee pad that can protect the body is very important.
For runners, there are also several common injuries, such as knee pain, iliotibial tract syndrome, foot blister, sprain wait. How did you solve or avoid the pain problem?
Knee pads and waist support are very good for sports injuries&protective equipment
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