At present, compound fertilizer has become the first choice for farmers in our country to buy fertilizers. However, most people still have many misunderstandings in the application of compound fertilizers. If some people think that all compound fertilizers are the same, the only difference is packaging. Now we will give an introduction to the scientific and rational application of compound fertilizers:
(1) Indigenous application: According to the level of soil fertilization, suitable proportion and amount of compound fertilizer should be selected according to local conditions. The soil with high fertilizer supply level can be used less. According to the soil texture, sandy soil, poor fertility, before light and heavy, a few times; viscous soil should be light before heavy, can be a large number of applications. According to the acidity and alkalinity of the soil, acidic compound fertilizer is applied to the alkaline soil, and alkaline compound fertilizer is applied to the acid soil to adjust the pH of the soil. Do not use potassium chloride compound fertilizers and compound fertilizers containing sodium in saline soils to avoid increased salt content in the soil.
(2) Due to crop application: Different crops require different fertilizer and sensitivity. For example, leguminous crops can only apply nitrogen fertilizer at the initial stage; cereal crops are insensitive to phosphorus; crops such as oil, potato, sugar, cotton and hemp need more potassium; crops such as vegetables and tobacco need to be used as little as possible. Chlorine compound fertilizer. In addition, the amount of fertilizer needed for different growth periods is also different. Fertilizers are generally applied during the critical period and maximum efficiency period of crop nutrition, and the yield increase effect is significant.
(3) Application due to nutrient form: Compound fertilizer containing ammonium nitrogen and amide nitrogen can be used in dry land and paddy field, but deep soil 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 as base fertilizers on acidic or neutral soils. Potassium chloride-type compound fertilizers should not be applied on chlorine-inhibited crops and saline-alkali lands.
(4) pay attention to fertilization method: compound fertilizer nutrients more complete, high nutrient content, mainly for basal. When dressing topdressing, it is necessary to open a ditch or a hole, and then cover the soil after applying.
(1) Indigenous application: According to the level of soil fertilization, suitable proportion and amount of compound fertilizer should be selected according to local conditions. The soil with high fertilizer supply level can be used less. According to the soil texture, sandy soil, poor fertility, before light and heavy, a few times; viscous soil should be light before heavy, can be a large number of applications. According to the acidity and alkalinity of the soil, acidic compound fertilizer is applied to the alkaline soil, and alkaline compound fertilizer is applied to the acid soil to adjust the pH of the soil. Do not use potassium chloride compound fertilizers and compound fertilizers containing sodium in saline soils to avoid increased salt content in the soil.
(2) Due to crop application: Different crops require different fertilizer and sensitivity. For example, leguminous crops can only apply nitrogen fertilizer at the initial stage; cereal crops are insensitive to phosphorus; crops such as oil, potato, sugar, cotton and hemp need more potassium; crops such as vegetables and tobacco need to be used as little as possible. Chlorine compound fertilizer. In addition, the amount of fertilizer needed for different growth periods is also different. Fertilizers are generally applied during the critical period and maximum efficiency period of crop nutrition, and the yield increase effect is significant.
(3) Application due to nutrient form: Compound fertilizer containing ammonium nitrogen and amide nitrogen can be used in dry land and paddy field, but deep soil 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 as base fertilizers on acidic or neutral soils. Potassium chloride-type compound fertilizers should not be applied on chlorine-inhibited crops and saline-alkali lands.
(4) pay attention to fertilization method: compound fertilizer nutrients more complete, high nutrient content, mainly for basal. When dressing topdressing, it is necessary to open a ditch or a hole, and then cover the soil after applying.
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