What is the function of grass grid sand barrier?

After the grass fence is set, it can intercept rainfall, especially for the snowfall in winter, and it can be controlled not to be blown away by the wind, so the water content of the sand layer increases, and the water content of the sand layer with a thickness of 2 meters increases from 1% to more than 3% ~ 4%. It is precisely because the grass fence sand barrier can fix quicksand, improve the moisture status of sand dunes and protect the growth of psammophytes.

Extended data:

People in sand areas collectively call sand barriers "wind walls". Grass grid sand barrier is made of wheat straw, rice straw, reed and other materials, which is tied into a grid-like wind wall on the flowing sand dunes to reduce wind erosion. During construction, first draw construction grid lines on the sand dunes so that the sand barrier is perpendicular to the local main wind direction.

Then, the evenly trimmed materials such as wheat straw or rice straw are placed horizontally on the grid line, and placed in the middle of the grass paving materials with tools such as shovels, and forcibly inserted into the sand layer about 65438±0.5cm, so that the two ends of the grass stand obliquely on the sand surface, and the height exposed from the ground is about 20 cm to 25 cm.

Then hold the sand with tools and bury the foundation of the grass barrier to make it firm. According to the test, the square with the size of 1m× 1m has the best effect.