Different soil fertilization
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Different soil fertilization 1. Sandy soil has large sand, loose soil, coarse grain, poor water retention performance, easy loss of fertilizer and water, and low potential nutrient content. Sand is more suitable for organic fertilizer, such as soil miscellaneous fertilizer, straw returned to the field, or a kind of green manure fertilization fertility timely, and gradually improve the soil properties. One of the top-dressing fertilizers is fast-acting fertilizers, which are convenient for crops to absorb quickly and avoid leaching after rain or watering. The second is to increase the frequency of fertilization and eat fewer meals to meet the needs of crops for different nutrient periods and reduce unnecessary Loss; the third is the ditch or acupuncture points; the fourth is mixed soil fertilization, conservation of nutrients, improve the soil. 2. The soil of clay soil is heavy and has strong fertility and water retention capacity, but its permeability is poor and its fertilizer efficiency is slow. Application of organic fertilizer must be fully brewed decomposing, topdressing fertilizer should be appropriate earlier, eat more meals, avoid late application of excessive nitrogen fertilizer to prevent sluggish crop maturity. In addition, cultivating loose soil and improving soil ventilation should also be carried out. 3, loam permeability, conservation, potential nutrient content between sand and clay, suitable for all types of crop growth, generally according to output requirements and crop appearance, timely and appropriate fertilization. The application shall be such that the combination of long-acting fertilizer and short-acting fertilizer can meet the demand of fertilizers in different growth periods of crops in a timely manner; organic fertilizer and chemical fertilizer combine to fertilize the soil and be used for the same purpose; the combination of large amounts of fertilizer and trace element fertilizers can provide timely supply to the crops. All kinds of nutrients needed; scientific, reasonable combination of nitrogen, phosphorus, and potassium to increase efficiency. 4, partial alkali soil available nitrogen content is relatively high, the application of ammonium nitrogen (such as ammonium bicarbonate, ammonium sulfate, etc.) should be acupuncture, furrow, deep application of base fertilizer and application of back cover and other methods to prevent or reduce the volatilization of ammonia. 5, partial acid soil potassium, calcium, etc. are easily replaced and loss with water, should pay attention to the addition of potassium and calcium. Phosphorus is easily combined with iron and aluminum in soil to form insoluble iron phosphate, aluminum phosphate and other compounds in acidic soils. Therefore, in the application of phosphorus in acidic soils, lime should be used to neutralize the acidity of the soil. Excerpted from China Agricultural Press>