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For sandy soils, the capacities of water and fertilizer retention are weak. The efficiency of fertilizer is high, but nutrients can only be available for plants in a short time. There is a possibility of fertilizer shortage for crops in late stage. Thus, farmers say sandy soil is good for seedlings, but bad for mature crops.

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Soil stickiness refers to the property of the soil particles bonded together by various attractive forces.

The organic matter is loose and porous. It plays a beneficial role in the formation of granular structure. The soil with high content of organic matter has more macropores, resulting in small porosity.

Because the size and shape of soil pores are irregular, it is difficult to determine the pore sizes by direct determination. In soil science, a determinable soil property related to pore size, namely soil water suction, is selected to indirectly determine the pore diameter.

Because soil pores account for nearly 50% of the total soil volume. The solid particle density is about twice of the soil bulk density. So, the value of pore space ratio is usually around 1.