In the construction of greenhouses, in order to save time and effort, the mature soil of the surface layer is generally used to pile up the shed wall, so that the soil used for planting vegetables is mostly about 1.5 meters from the surface of the soil, such soil organic matter. Lack of, so a lot of organic fertilizer. How to do it? The following small series introduces you to the "three additions and two supplements" method:
First, increase the amount of manure such as chicken manure.
Most of the newly built sheds are raw soil and lack of organic matter. Therefore, it is necessary to supplement the organic fertilizer in large quantities, such as rice husk, chicken manure and other organic fertilizers, which can increase the amount of ar in the amount of 35 yuan. Although these organic fertilizers cannot be applied, the soil cannot be increased rapidly. Organic matter in the middle, but it can improve the physical and chemical properties of the soil to some extent.
Second, increase the application of biological fertilizer.
In the newly built greenhouse, the amount of various microorganisms in the soil is small. Even if a large amount of organic manure such as chicken manure or rice husk is applied, the organic fertilizer is not rapidly decomposed into soil organic matter because of the lack of microorganisms in the soil. Therefore, when applying vegetable manure, chicken manure and other organic fertilizers in the newly-built greenhouse soil, it is necessary to pay attention to the application of biological bacterial fertilizer, such as 40-70 kg of bio-fertilizer per acre to quickly replenish the microorganisms in the soil.
Third, increase the application of commercial organic fertilizer.
Commercial organic fertilizers have high organic matter content and help the soil to quickly replenish organic matter after use. After the first application of manure to the newly-built greenhouse soil, the vegetable grower can apply the commercial organic fertilizer in combination with 500 kg per mu, which can ensure the nutrition required in the early stage of vegetable growth.
Fourth, supplement with NPK fertilizer.
The soil in the new greenhouse is all raw soil, and the content of nitrogen, phosphorus and potassium in the soil is extremely low. Therefore, it is necessary to pay attention to the application of nitrogen, phosphorus and potassium fertilizers when applying the base fertilizer. Generally, about 50 kg of fertilizer is used per mu.
Fifth, supplement the trace elements.
For vegetables to grow healthily, not only a large number of elements such as NPK, but also more than 10 kinds of medium and trace elements such as calcium, iron and boron are needed. The lack of medium and trace elements in the newly-built greenhouse soil has become a prominent problem that restricts the high yield and quality of vegetables.
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