Sandy soil can be subdivided into sandy loam and sandy clay. These two soils are mainly distributed in the piedmont plains of Xinjiang, Gansu, Ningxia, Inner Mongolia and Qinghai, as well as on the banks of rivers and coastal plains.

Characteristics of soil

The content of sand particles is high, the particles are coarser and smaller than above, and the number of initial particles is more, so the soil has good ventilation and water permeability, and the drainage in the soil is smooth, and it is not easy to generate moisture support, internal filling and upper water retention.

Poor storage performance. Weak water-retaining, water-retaining and fertilizer-retaining properties easily lead to the loss of water and fertilizer after rain, rapid evaporation of water, and disharmony easily leads to soil drought. The primary minerals in soil are mainly timely and feldspar, with low potential nutrient content, but rapid nutrient transformation.

The soil temperature changes greatly, with the soil heating up quickly during the day and cooling down quickly at night. The soil temperature is low in early spring, but it rises rapidly with the increase of temperature, which is beneficial to the growth of warm crops such as peanuts, cotton, melons and potatoes, commonly known as hot soil, but it is also easy to cause frost in late autumn.

Good tillage, long suitable tillage period, loose and flat soil after tillage, no long-term garbage or soil defects, few obstacles after tillage and good quality. This kind of soil is also called "light soil" There are many cracks in sandy soil and too much oxygen, mainly due to oxidation, and there are no toxic substances in the soil. The sand is "loose in the mouth", which comes out quickly, evenly and thoroughly. However, due to the lack of nutrients, it is easy to cause fertilizer removal, early maturity and premature aging of crops in the later stage.

Extended data:

Soil type:

According to the size of soil particles, soils are usually divided into three categories: sandy soil, clay and loam.

1. Sandy soil properties: large sand content, coarse particles, fast water seepage, poor water retention and good air permeability.

2. Properties of clay: less sand, fine particles, slow water seepage, good water retention and poor air permeability.

3. Properties of loam: average sediment concentration, average particle size, average water permeability, average water retention and average aeration.

Classification and combination of soil types on the earth's land surface. It is closely related to the overall changes in natural and geographical conditions.

Baidu encyclopedia-sandy soil

Baidu Encyclopedia-Soil Types