How to properly apply compound fertilizer?

At present, compound fertilizer has become the first choice for farmers in China to purchase fertilizer, but most people still have many misunderstandings in the application of compound fertilizer. For example, some people think that all compound fertilizers are the same, and the only difference is packaging. Now let's take a look at the scientific and rational application of compound fertilizer:
(1) Due to soil application: According to the soil fertility level, the appropriate compound fertilizer ratio and dosage should be selected according to local conditions, and the soil fertility level can be low. According to the soil texture, sandy soil, poor fertilizer retention, light and heavy before, a small number of times; sticky soil should be heavy before the light, can be applied in large quantities at one time. According to the acidity and alkalinity of the soil, the acidic compound fertilizer is applied to the alkaline soil, and the alkaline compound fertilizer is applied to the acidic soil to adjust the soil pH. Do not apply potassium chloride type compound fertilizer and sodium-containing compound fertilizer to the saline soil to avoid the increase of soil salinity.
(2) Due to crop application: different crops require different amounts of fertilizer and sensitivity. For example, legume crops can be applied only at the initial stage; cereal crops are not sensitive to phosphorus; oils, potatoes, sugar, cotton and other crops require more potassium; vegetables, tobacco and other chlorine-free crops should be used as little as possible. Chlorine compound fertilizer, etc. In addition, the amount of fertilizer required for different growth periods is also different. Fertilization is generally carried out in the critical period of crop nutrition and the maximum efficiency period, and the yield increase effect is remarkable.
(3) Application due to nutrient form: Compound fertilizer containing ammonium nitrogen and amide nitrogen can be used in dry land and paddy fields, but deep application should be applied; compound fertilizer containing nitrate nitrogen should be applied to dry land. Compound fertilizers containing water-soluble phosphorus can be applied on various soils; compound fertilizers containing weak acid-soluble phosphorus are superior to alkaline soils in acidic or neutral soils. Potassium chloride type compound fertilizer should not be applied on chlorine-free crops and saline-alkali soil.
(4) Pay attention to the fertilization method: the compound fertilizer has more nutrients and higher nutrient content, which is mainly used as the base fertilizer. When applying top dressing, it should be ditched or applied at the point of application.

share to: