The importance of organic base fertilizer

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 use of base fertilizer. How to adjust it through soil testing? The combination of base fertilizer is the prerequisite for soil cultivation.

1.The amount of organic fertilizer should be sufficient. It is understood that the excessive use of organic fertilizers is only an isolated phenomenon, and the amount of organic fertilizers used by most shanty households is generally insufficient. According to the data, the organic matter consumed by one mu of vegetables is about 2,000 kg, so apply a sufficient amountIn order to make up for the consumed organic matter. It is generally recommended that the amount of organic fertilizer per acre should reach about 10,000 catties. You can choose high-quality animal manure, rice husk manure, high-quality straw, etc., of course, you can also use high-quality commercial organic fertilizers.

Secondly, add appropriate amount of chemical fertilizer and biological bacterial fertilizer. In order to ensure that the base fertilizer can adequately supply the nutrients for the growth of vegetables throughout the growth period, the base fertilizer is often mixed with organic fertilizers and chemical fertilizers. Usually 100% of the required phosphate fertilizer, 20%-50% of the potassium fertilizer, and 30%-50% of the nitrogen fertilizer are mixed into the organic fertilizer. The amount of chemical fertilizers should be adjusted according to the quality and quantity of organic fertilizers used. Adding biological bacterial fertilizer to the base fertilizer can better improve the soil and increase the absorption and utilization of nutrients; on the other hand, biological bacterial fertilizer can inhibit bacteria and prevent root diseases and repeated crop damage.

2.Use effective middle and trace elements. Under normal circumstances, the trace elements that need to be applied in the base fertilizer are calcium fertilizer, boron fertilizer, iron and zinc fertilizer, etc. When applying medium and micro-fertilizers, you need to pay attention to buying and using effective fertilizer products. Puyoucai Nongfa

Now, although a sufficient amount of calcium fertilizer has been applied, the calcium content is found to be insufficient after a formal soil test. This shows that the calcium fertilizer used is a fake fertilizer with no effect.

3.The method of application needs to be changed. First of all, base fertilizer must be applied deeply. Generally, the turning depth of the rotary tiller is about 20 cm, which tends to cause the enrichment of nutrients on the surface. Vegetable roots are all fertile. After planting, the roots will expand and extend with the fertilizer. A large number of roots will be concentrated in the soil about 20 cm. This will affect the growth of vegetables and reduce the resistance of the plants. It is easy to be injured by low temperature in winter. . If the fertilizer is too concentrated on the ground, root systems such as cucumbers will grow in circles instead of piercing down vertically. Secondly, when the amount of base fertilizer is small, furrow or border application can be used, and when the amount of base fertilizer is large, the whole shed must be turned deeply.

How to adjust the fertilization in the case of excessive or partial application of chemical fertilizer in the base fertilizer?

First of all, it is best to irrigate once before planting. Utilize the relatively easy loss of nitrogen and potassium to bring it into the deep soil. On the one hand, this can prevent nitrogen fertilizer from entering the air and cause waste, and on the other hand, it can prevent a large amount of nutrients from being concentrated in the soil layer of about 20 cm.

It causes salinization and affects root piercing. 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 fertilizer with high organic matter content and relatively low nitrogen content can be applied in furrow or flushing. Replenish the lack of organic matter in the soil and promote the formation of aggregate structure. After entering the flowering and fruiting period, according to the growth of the plant, increase the amount of flat.

The amount of water-soluble fertilizer. After entering the fruiting period, the plants must not only maintain vegetative growth, but also meet the needs of fruit expansion, and appropriate water-soluble fertilizers with high nitrogen and potassium can be topdressed.

In addition, the local soils are mostly alkaline soils. The boron, zinc, and iron in the soil may be insufficient. You should start spraying full-nutrient foliar fertilizers containing zinc, iron, and boron after the slow planting of the seedlings. Also: These 10 kinds of fertilizers cannot be used for greenhouse vegetables!

1.Don’t apply large amounts of undeveloped cake fertilizer to vegetables in greenhouses. Because cake fertilizer has a small carbon-to-nitrogen ratio and quickly decomposes, it is easy to produce high temperature and high concentration of ammonia and organic acids locally, and it 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.

2.Do not use ammonium sulfate in vegetable greenhouses in winter. Ammonium bicarbonate is a physiologically acidic fertilizer. After application, it will increase the acidity of the soil and destroy the soil structure. After the application of ammonium bicarbonate, a large amount of ammonia gas is volatilized, which is unfavorable to the growth of vegetables.

3.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 the yield, and the residual chloride ions in the soil can cause soil acidification and easily cause soil decalcification.

4.Greenhouse vegetables should not be fertilized under drought conditions. Vegetables are water-loving crops. Applying fertilizer when the soil is dry will not only fail to give full play to the fertilizer effect, but will also cause the concentration of the soil solution to rise suddenly, making it easy to burn the roots of the vegetables. Therefore, vegetable fertilization should be combined with irrigation In combination, we should open the furrow to fertilize, bury the fertilizer tightly and then irrigate it, or topdress the fertilizer along the water.

5.Do not use diammonium phosphate in vegetable greenhouses in winter. Vegetables need a lot of nitrogen and potassium, but less phosphorus. Also note: do not mix diammonium phosphate with alkaline fertilizers such as plant ash, so as not to cause ammonia volatilization and cause ammonia damage.

6.It is not suitable to apply potassium fertilizer to vegetables in the vegetable greenhouse in the later period. Generally, potassium fertilizer is required before and after flowering, and it will gradually decrease in the future.

7.It is not suitable to disperse phosphate fertilizer in vegetable greenhouses. Phosphorus is easily absorbed and solidified by the soil and loses its 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.

8.It is not suitable to apply more phosphate fertilizer and zinc fertilizer in vegetable greenhouses in winter. When vegetables are deficient in zinc, 0.05%-0.2% zinc sulfate solution can be sprayed on the leaves.

9.Be careful not to apply iron fertilizer to the soil. Because iron is easily converted into insoluble compounds by soil fixation, it loses its fertilizer effect. Iron does not flow easily on the leaves, so it should be sprayed on the leaf surface. You can spray evenly on the surface of vegetable leaves with a 0.1%-0.3% ferrous sulfate solution.

10.Do not apply rare earth micro-fertilizers directly into the soil in the vegetable greenhouse in winter. You can use 0.05%-0.07% rare earth fertilizer solution to spray on the vegetable leaves, spraying 50-60 kg of solution per mu.