1. Control the dosage and concentration, and strive to apply uniform crops. The amount of trace elements is very small. The concentration range of many trace elements from lack to proper amount is very narrow. Therefore, the application of trace element fertilizer should be strictly controlled to prevent the concentration from being too large. Pay attention to uniformity.
2. For the application of trace elements in soil, the effectiveness and content of trace elements in different types and different textures are different, and the effect of applying trace element fertilizers is different. When applying micro-fertilizer, it should be applied reasonably for the condition of trace elements in soil.
3. Pay attention to the response of various crops to trace elements. The application of various crops has different responses to different trace elements. The sensitivity is different, the amount of demand is different, and the application effect is obviously different. For example, the effect of applying zinc fertilizer on corn is better. Rape is sensitive to boron, gramineous crops are sensitive to manganese, and legumes are sensitive to molybdenum and boron. Therefore, it is necessary to rationally select and apply the sensitivity and fertilizer efficiency of different crops to different trace elements.
4. Pay attention to improve the supply of trace elements in the soil environment, often due to the influence of soil environmental conditions. Soil acidity and alkalinity are the primary factors affecting the effectiveness of trace elements, followed by soil texture, soil moisture, soil redox status and other factors. In order to completely solve the problem of trace element deficiency, we should pay attention to improving soil environmental conditions while supplementing trace element nutrients. For example, acidic soil can adjust soil acidity and alkalinity by applying organic fertilizer or applying appropriate amount of lime to improve soil nutrient status.
5. Pay attention to the application with a large number of elemental fertilizers and organic fertilizers. Only when the crops meet the needs of a large amount of elements such as nitrogen, phosphorus and potassium, the trace element fertilizers can show obvious yield increase effects. The application of organic fertilizer can adjust the soil environmental conditions and achieve the purpose of improving the effectiveness of trace elements. The combination of organic fertilizer and inorganic micro-fertilizer should be an important measure for the management of soil trace element nutrients in agricultural production in the future.
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