Misunderstanding 1: The closer the fertilization is to the stem of the plant, the more easily the fertilizer is absorbed.
This is a phenomenon that is more common in planting, and this method of fertilization has a greater hazard. Because the part of the plant that absorbs nutrients is in the root hair area, the plant stems and roots (except the root hair area) absorb little or no nutrients, and the closer to the stem of the plant when fertilizing (except the seedling stage), the more nutrient absorption site of the fertilizer from the plant Far, so it is less easy to be absorbed. If the fertilization is too much and the concentration is too large, the phenomenon of "burning seedling" is likely to occur. Therefore, when fertilizing, the fertilization position should be determined according to the growth of the plant's shoots and the root growth of the shoots to ensure the fertilization effect.
Misunderstanding 2: After crops appear to be deficient, fertilize again
After the fertilizer is applied, it usually takes 5-7 days to be absorbed and utilized. Therefore, if the crop is deficient after fertilization, it will cause the crop to be deficient for a long time, resulting in a reduction in production. Therefore, the fertilization work should be carried out according to the fertilizer characteristics of the crop. Fertilize 8-10 days in advance. At the same time, the nutrient absorption of crops is also related to light, temperature, water, fertilization methods (such as dry application, drenching, root dressing, etc.). Strong light, high temperature, and sufficient water will accelerate the absorption of crop nutrients. On the contrary, the absorption will slow down. The root dressing is directly absorbed by the leaves because of the nutrients. Therefore, it can be applied slowly, but the concentration is low to prevent damage to the leaves. The leaching can directly infiltrate the fertilizer into the root of the plant, and it can be applied quickly. It can also be applied slowly. The dry application is slow and should be applied early.
Myth 3: As long as the crops grow well, they can get high yields.
The growth of crops includes two stages of vegetative growth and reproductive growth (except for leafy vegetables and meat stems). Applying nitrogen fertilizer in the early stage of growth can promote vegetative growth. However, if nitrogen fertilizer is applied in the reproductive growth period, it will cause crop greed, affect reproductive growth, hinder the conversion of nutrients, and reduce yield and quality. Therefore, fertilization should be carried out according to the growth of crops. In the early stage, nitrogen fertilizer is the main factor to promote vegetative growth, and nitrogen, phosphorus and potassium are combined in the middle and late stages to promote reproductive growth and increase yield.
Myth 4: As long as the fertilizer is applied, you can get high yield.
The types and amounts of nutrients required for the whole growth period of various crops and different growth periods are different. If the fertilizer is not fertilized according to the fertilizer characteristics of the crop, the first is to cause the crop to suffer from deficiency, stress resistance and disease resistance, resulting in reduced yield and quality. Second, the demand for some crops is small or not absorbed. The residue or loss of nutrients causes waste of fertilizer. Therefore, the type and quantity of fertilization should be determined according to the growth characteristics of the plant, and the fertilizer effect should be fully exerted.
Myth 5: As long as fertilizer is applied, it will have a fertilizer effect.
Fertilization efficiency is related to soil characteristics, crop nutrient absorption characteristics, fertilizer nutrient release characteristics, water, gas, heat and other conditions. If the influence of various factors is not fully considered, it is easy to cause nutrient loss and lack of fertilizer. . The sandy soil has quick fertilizer effect, but the loss is also fast. Therefore, it should be carried out according to the principle of less application and multiple application. The clay loam is slow in fertilizer application, and the base fertilizer should be applied and the top dressing should be applied early. Potassium fertilizer is easy to dissolve, but the loss is also fast. Therefore, it should be fertilized according to the potassium requirement of the crop. The organic fertilizer and phosphate fertilizer have slow effect and less loss. It should be applied early, and the ammonium carbonate is highly volatile. It can be combined with organic fertilizer or phosphate fertilizer.æ–½ Fertilization after 1-2 days can reduce the loss of nutrients.
Misunderstanding 6: Focus only on the amount of fertilization, not on nutrient content
Some compound fertilizers appearing on the market nowadays are widely used due to lower unit prices. These compound fertilizers generally have a low content of active ingredients or a low or no content of one of the three major elements. If insufficient attention is paid to these conditions, the fertilization habit of high-content compound fertilizers continues, and the applied nitrogen, Insufficient phosphorus and potassium cause crop shortage and deficiency, which affects yield and quality. Therefore, when using these compound fertilizers, the contents of nitrogen, phosphorus and potassium in these compound fertilizers should be fully understood, and according to the fertilizer characteristics of various crops, combined with the use of single-element fertilizers such as nitrogen, phosphorus and potassium to ensure the normal growth of crops.
Misunderstanding 7: More fertilization, higher efficiency
According to the principle of diminishing returns, when the fertilization reaches a certain amount, the input-output ratio decreases, and the benefit decreases. If too much fertilization, it will result in reduced production. Therefore, according to the fertilizer characteristics of the whole growth period of the crop, soil fertility, crop planting density, etc., the principle of sufficient supply but not waste should be found to find the best fertilization scheme for fertilization, give full play to fertilizer efficiency and increase economic benefits.
Misunderstanding 8: Focus only on the application of a large number of elements, not paying attention to the application of trace elements
A large number of elements are the basic elements for the growth of crops, but some crops require a certain amount of trace elements or a trace of trace elements in the soil during the whole growth period or a certain growth period. If the trace elements are not added, the plant will be deformed. Falling flowers and fruit, product yield and quality decline. Therefore, while applying a large number of elements such as nitrogen, phosphorus and potassium, it is necessary to apply various trace elements such as iron, manganese, zinc and boron to ensure the normal growth of crops in accordance with the fertilizer characteristics of the crops and the composition of soil nutrients. .
Jiangsu Dingtian Stainless Steel Products Co., Ltd. , https://www.dingtiancasting.com