Sand and sandy soils are characterized by large sandy soil, loose soil, large coarse grains, poor capillary performance, easy loss of fertilizer and water, and low potential nutrient content. This type of soil should be given more organic fertilizers, such as soil miscellaneous fertilizer, straw returned to the field, etc., and gradually improve the soil properties.
Soils such as clay are heavy in texture and have strong fertility and water retention capacity, but their permeability is poor and their fertilizer efficiency is slow. Therefore, the application of organic fertilizer must be fully brewed and decomposed, and topdressing of chemical fertilizers should be appropriately advanced, and should "eat more food." Late use of excessive nitrogen fertilizer to prevent late maturity of the crop greed. In addition, cultivating loose soil and improving soil ventilation should also be carried out.
Loam soil is a soil with good characters, and fertilization should be applied in a timely manner. In principle, it is necessary to combine long-acting fertilizers with short-acting fertilizers in order to meet the fertilizer demand in different growth stages of the crops in a timely manner. Organic fertilizers are combined with chemical fertilizers to fertilize the soil and combine the use of both; the combination of a large number of elemental fertilizers and micro-fertilizers to provide timely crops Provide all kinds of nutrients required; nitrogen, phosphorus and potassium combine to increase efficiency.
In addition to seeing the soil, the pH of the soil must also be considered when fertilizing. Soil pH has great influence on nutrient availability and is an important basis for rational fertilization.
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