Organic fertilizer equipment The use of organic base fertilizer and soil adjustment are very important

In vegetable cultivation, the use of base fertilizer produced by the organic fertilizer production line is very important. In production, there are many problems caused by the bias of the base fertilizer. How to adjust it through soil testing?

First of all, the amount of organic fertilizer should be sufficient. It is understood that the excessive use of organic fertilizers is only an individual phenomenon, and the amount of organic fertilizers in most shanties is generally insufficient. According to the data, the organic matter consumed by one mu of vegetables is about 2,000 kilograms, so the consumption of organic matter can be supplemented by applying a sufficient amount. It is generally recommended that the amount of organic fertilizer per mu should reach about 10,000 catties. You can choose high-quality livestock manure, rice husk manure, high-quality straw, etc. Of course, you can also use high-quality commercial organic fertilizers.

Second, add appropriate amounts of chemical fertilizers and biological bacterial fertilizers. In order to ensure that the base fertilizer can adequately supply the nutrients for the growth of vegetables throughout the growth period, the method of mixing organic fertilizers with chemical fertilizers is often used in the base fertilizers. Usually, 100% of the required phosphorus fertilizer, 20%-50% of the potassium fertilizer, and 30%-50% of the nitrogen fertilizer are mixed into the organic fertilizer and applied together. The amount of chemical fertilizer should be adjusted according to the quality and quantity of the organic fertilizer used. On the one hand, the addition of biological bacterial fertilizer to the base fertilizer can better improve the soil and improve the absorption and utilization rate of nutrients; on the other hand, biological bacterial fertilizer can prevent root diseases and continuous cropping damage by bacteriostasis.

Again, use effective medium and trace elements. Under normal circumstances, the trace elements that need to be applied in the base fertilizer are calcium fertilizer, boron fertilizer and iron and zinc fertilizer. When applying medium and micro fertilizers, you need to pay attention to purchasing and using effective fertilizer products. A vegetable farmer once found that although a sufficient amount of calcium fertilizer was applied, the calcium content was found to be insufficient after a formal soil test, indicating that the calcium fertilizer used was a fake fertilizer with no effect.

In addition, the mode of administration will vary. First, the base fertilizer should be applied deeply. Generally, the ploughing depth of the rotary tiller is about 20 cm, which often results in the enrichment of surface nutrients. Vegetable roots are all fertile. After planting, the roots will expand and extend with the fertilizer, and a large number of roots are concentrated in the soil about 20 cm, which not only affects the growth of vegetables, but also reduces the resistance of plants. It is easy to be damaged by low temperature in winter. . During the interview, the reporter found that if the fertilizer is too concentrated on the surface, roots such as cucumbers will circle around.

Grow, rather than plunge straight down. Secondly, when the amount of base fertilizer is small, furrow application, border application and other methods can be adopted, and when the amount of base fertilizer is large, the whole shed must be deeply plowed.

The basal fertilizer makes the adjustment after soil testing and early adjustment:

The maximum time for changing crops in winter and spring is 10 days. Many vegetable farmers test soil under the condition of applying base fertilizer. Although this cannot directly reflect the nutrient status of the previous crop, we can still judge the spring crop based on the test results. What will happen after the vegetables are planted, and the organic fertilizer production line equipment can also be adjusted according to the fertilization of vegetables.

So how to adjust the fertilization in the case of excessive or biased application of chemical fertilizers in the base fertilizer?

First of all, it is best to water once before planting. Taking advantage of the relatively easy loss of nitrogen and potassium, it is brought into the deep soil. On the one hand, it can prevent nitrogen fertilizer from entering the air and cause waste, on the other hand, it can prevent a large amount of nutrients from being concentrated in the soil layer of about 20 cm, causing salinization and affecting the root system. tie. It can also dilute the higher concentration of salt solutions in the soil. It is best not to use any type of nitrogen and potassium fertilizers before the flowering and fruit setting period.

Secondly, in the early stage of vegetable growth, organic fertilizers with high organic matter content and relatively low nitrogen content can be applied in furrows or flushes. Supplements the lack of organic matter in the soil and promotes the formation of agglomerate structure. After entering the flowering and fruiting period, according to the growth of the plant, the amount of balanced water-soluble fertilizer should be increased appropriately. After entering the peak fruiting period, the plants must not only maintain vegetative growth, but also meet the needs of fruit expansion. Appropriate topdressing of water-soluble fertilizers with high nitrogen and high potassium can be applied.

In addition, these 10 kinds of fertilizer greenhouse vegetables can not be used!

  1. Do not apply a large amount of cake fertilizer that is not decomposed to vegetables in greenhouses. Because the carbon-nitrogen ratio of cake fertilizer is small and decomposes quickly, it is easy to generate high temperature and high concentration of ammonia and organic acid locally, which is easy to burn roots. The cake fertilizer should be broken up and soaked in human feces and urine for about 3 weeks use after fermentation.
  1. Do not use ammonium sulfate in vegetable greenhouses in winter. It is forbidden to use ammonium bicarbonate sulfur. It is a physiological acid fertilizer. After application, it will increase the acidity of the soil and damage the soil structure. After ammonium bicarbonate was applied, a large amount of ammonia gas was volatilized, which was unfavorable for vegetable growth.
  2. Do not use chlorine-containing fertilizers in vegetable greenhouses. Chloride ions can reduce the starch and sugar content of vegetables, deteriorate the quality of vegetables and reduce yield, and chloride ions remain in the soil, which can cause soil acidification and easily cause soil decalcification.
  3. Greenhouse vegetables should not be fertilized under drought conditions. Vegetables are water-loving crops. Fertilizing when the soil is dry will not only not fully exert the fertilizer effect, but will also cause the concentration of the soil solution to rise suddenly, which will easily cause the vegetables to burn their roots. Therefore, vegetable fertilization should be combined with irrigation combined, it is necessary to ditch and fertilize, and then irrigate after the fertilizer is buried tightly, or topdressing along the water.
  1. Do not use more diammonium phosphate in vegetable greenhouses in winter. Vegetables require a lot of nitrogen and potassium and less phosphorus. In addition, it should be noted that diammonium phosphate should not be mixed with alkaline fertilizers such as plant ash, so as not to cause the volatilization of ammonia and cause ammonia damage.
  2. It is not suitable to apply potassium fertilizer in the later period in vegetable greenhouses. Vegetables generally need more potassium fertilizers before and after flowering, and then gradually decrease.
  3. It is not suitable to disperse phosphate fertilizers in vegetable greenhouses. Phosphorus is easily absorbed and solidified by the soil and loses fertilizer efficiency. Therefore, phosphate fertilizer is suitable as a base fertilizer or concentrated in the soil layer with dense roots in the early stage of vegetables.
  4. It is not suitable to apply more phosphorus and zinc fertilizers in vegetable greenhouses in winter. When vegetables are deficient in zinc, 0.05%-0.2% zinc sulfate solution can be sprayed on the foliage.
  5. Be careful not to put iron fertilizer into the soil. Fertilizer efficiency is lost because iron is easily converted into insoluble compounds by soil fixation. Iron is not easy to flow on the leaves, so it should be sprayed on the leaves. It can be sprayed evenly on the leaves of vegetables with 0.1%-0.3% ferrous sulfate solution.
  6. Do not apply rare earth micro-fertilizer directly into the soil in vegetable greenhouses in winter. You can use 0.05%-0.07% rare earth micro-fertilizer solution to spray on vegetable leaves, and spray 50-60 kg of solution per mu.