The reasonable combination of fertilizers can achieve twice the result with half the effort. To this end, the rural public newspaper reporter interviewed Professor Wang Jingyong of Shandong Agricultural University, asked him how to use various fertilizers, how to get the maximum output with the least investment.

"Feed fertilizer selection is very important for proper application." Wang Jingyong said that whether fertilizer can exert good effects is closely related to the quality of fertilizer itself, and the reasonable combination of various nutrients is very important. The so-called rational fertilization is to apply fertilizer according to the soil conditions and the nutritional characteristics of the crop itself. Take Tianji fertilizer as an example. The NPK fertilizer, nitro compound fertilizer and stable compound fertilizer of the ridge, these series of fertilizers all contain nitrate nitrogen, nitrate nitrogen and ammonia nitrogen exist at the same time. Accounted for about 50%. The biggest advantage of this type of fertilizer is that after entering the soil, nitrate nitrogen is most easily absorbed by crops, and in most crops, nitrate is preferentially absorbed mainly by ions.

Some people say that "in order to prevent the nitrate content of vegetables from exceeding the standard, it is better not to use nitrate nitrogen fertilizer" is obviously not correct. It is not possible to regard crop nitrogen absorption as a static process. In fact, no matter which form of nitrogen fertilizer is applied to vegetables, nitrogen fertilizer is absorbed by vegetables, and a series of transformation processes are carried out in the body. First, it combines with carbohydrates to form amino acids, and then further synthesizes proteins to complete the metabolic process of nitrogen. At this time, the nitrate content in vegetables naturally decreases. For safety reasons, the final nitrogen fertilizer time for green vegetables should be 8-10 days before harvesting. This is called the safety interval.

Wang Jingyong said that some people said that a lot of urea and compound fertilizer were applied during the fertilization process, and the effect was not satisfactory. The reason was that the nitrogen in these fertilizers was mainly ammonium nitrogen. After it entered the soil, part of it was The soil colloid is adsorbed, and a part of it is quickly converted into nitrate nitrogen by the soil-digesting bacteria, which is then absorbed by the crop. Most of the compound fertilizers are now nitro-free, urea-based compound fertilizer. The characteristic of this compound fertilizer is that it uses urea as nitrogen and urea enters the soil. First, urea itself is called organic nitrogen, which is not The chemical nitrogen is not an ionic state. It is a molecular state and the crop is hardly absorbed. The crop does not absorb. After it enters the soil, nitrogen needs urease to decompose it. The rate of decomposition is related to temperature. It takes about 6 days in winter and about 3 days in summer to break down into an ionic nutrient required for crops. Nitrogen forms a solution with the water in the soil, when the crop can be absorbed, but this rate is slower. Therefore, the compound fertilizer containing nitro, the nitrate-based compound fertilizer has high solubility, and the utilization rate of crops is also high. It is based on this feature of nitro-fertilizer, and many companies are now vigorously developing nitro-compound fertilizer. Nitro compound fertilizer is becoming a hot product on the market.

We often say that the solubility of different fertilizers is different. In the end, from the situation of nutrients absorbed by crops, one is called capture, and the other is called DC.

DC is absorbed by the concentration, from the concentration to the small concentration of flow, and the other is the transpiration force. Due to the transpiration force, the crop is continuously absorbed, the water is lost, and a large amount of water enters the crop with the root conduit. It absorbs this water and is actually called an aqueous solution, but it is not pure water.

So what is a solution? It is the ion that contains fertilizer, which is the nutrient segregant dissolved in the soil solution. Nutrients preferentially absorb large amounts of solubility. For example, after nitrogen enters the soil, it is rarely retained by the soil because it is an anion, the soil colloid is also an anion, and the same sex is repelled, so it is generally not maintained. But it will soon enter the solution, and in the solution, it will quickly increase the solubility of the soil solution. During this period, regardless of DC or transpiration, it first enters the interior of the crop, so the crop quickly subsidizes the nitrogen into the crop. This phenomenon is more pronounced especially in the early spring and low temperature conditions.

In terms of crop needs, first of all, the absorption of nitrate nitrogen by vegetables is the best, followed by fruit trees, and then the absorption of field crops is also very good. Therefore, many of our vegetable growers and fruit growers like to use nitro-compounds because they are effective. In field crops, like wheat and corn, people are accustomed to using traditional fertilizers such as urea because of the long growth period of crops. It is feared that the use of nitro compound fertilizer will result in insufficient supply of nutrients in later crops. In fact, any kind of fertilizer can not meet the nutrient supply of wheat and corn throughout the growing season. If high yield is needed, it is necessary to supplement fertilizer in the later stage. In order to meet the needs of farmers for seeding and sowing, Tianji also launched a special fertilizer for corn with nitrification inhibitors. After more than two years of experiments in various parts of Shandong, it has achieved good results.

“We often say that the utilization rate of Tianji fertilizer is 10%-15% higher than that of common fertilizer. What is the reason? This has a lot to do with their unique production process. Wang Jingyong said: “Tianji compound fertilizer is The phosphate rock powder is decomposed by adding concentrated nitric acid. In this decomposition process, not only the phosphorus is decomposed, but also various trace elements in the ore powder are dissolved therein, such as calcium, magnesium, iron, iron, manganese, copper, zinc and the like. Very rich. So we said that Tianji Fertilizer is a buy and a gift. The biggest advantage of these elements in the presence of fertilizer is that the original is not added. It is a similar fusion of nature. In the process of crop absorption, it is absorbed naturally. This is the natural match between fertilizers, crop absorption. In the future, crop nutrition is balanced, so it is necessary to pay attention to fertilization under normal circumstances. The NPK fertilizer and nitro compound fertilizer of Tianji brand must pay attention to the amount when it is used, because it is directly soluble in water, and the soil solution is increased instantaneously. Concentration, so the amount should not be too large when fertilizing, can be a small number of times. Under normal circumstances, vegetable topdressing should not exceed 15 kg, and in special cases, it can catch up to 20 kg.

The fertility habits of farmers are as much as possible, which is not only wasteful but also not effective. The amount of fertilizer used is not the same. If you are applying nitro compound fertilizer, the amount must not be too much when used. You can chase the fertilizer every 15 days, which can improve the utilization rate of fertilizer. Another one, as the inside of the nitro compound fertilizer, we should pay attention to two problems. Do not think that the fertilizer in the ridge of the ridge contains trace elements, and it is no longer worthy of other elements. This is not true. There is a lot of fertilizer inside, but the amount is large and small, so it is mainly regarded as an element lacking in the object. If it is suffering from deficiency, it is necessary to add other trace elements. The sprayed fertilizer still needs to be sprayed.

This article URL: Experts explain: the choice and use of fertilizer types

Sodium Gluconate

Sodium Gluconate,High Quality Sodium Gluconate,Sodium Gluconate Details

SHANDONG BAISHENG BIOTECHNOLOGY CO., LTD , https://www.baishengbioproducts.com