Greenhouse vegetables fertilization methods

Greenhouse vegetables are distributed in many areas, greenhouse vegetable fertilization problems, but also many vegetable farmers friends focus. How that greenhouse vegetable fertilization? Here to tell you about greenhouse fertilization methods.

(1) Organic fertilizer Organic fertilizer is generally used as basal fertilizer, and is often applied before plowing. In order to improve fertilizer efficiency, it is best to concentrate ditch planting when planting vegetables and fruits with bigger row spacing, pay attention to the application in different layers and mix well with soil. In order to prevent the secondary salinization of soil, organic fertilizers are usually applied in large quantities in the greenhouse. At this time, 1 / 2-2 / 3 can be applied, while the remaining 1 / 2-1 / 3 can be concentrated or applied. Use human waste for top dressing can be diluted after pouring poured or directly with water Chong Shi.

(2) Nitrogen fertilizer Nitrogen fertilizer is quick-acting fertilizer, which is generally used as topdressing staged application. When applied, it should be buried 5-10 cm deep underground, especially in the greenhouse can not be applied to the surface to avoid the ammonia damage. With the water chase. Nitrogen can also be used as seed fertilizer. In the case of inadequate supply of nitrogen or plant uptake of nitrogen can not meet the needs, but also foliar spray, nitrogen fertilizer only for foliar spray, the leaf area is basically reached the maximum spray best.

How greenhouse fertilizers science vegetables

(3) Phosphate Fertilizer In order to improve the utilization rate of phosphate fertilizer, phosphate fertilizer should be concentrated in deep application, but also can be concentrated layered application, which is good for root absorption. When applied to soil, granular phosphate fertilizer such as DAP has better agricultural effect and higher available P content than powder phosphate fertilizer. Phosphate fertilizer can also be used for foliar spraying and soaking, soaking concentration of 0.4% -0.5% is appropriate.


(4) potash potash more fertilizer and fertilizer for planting, can be concentrated ditch facilities, shallow root vegetables can be sprinkled on the surface, mixed with the topsoil. Decomposition of fast potassium sulfate can be used for topdressing, application of digging holes near the roots of the plant into the underground. Due to its lower solubility and mobility than nitrogen fertilizers, it can be administered 2-4 days earlier than nitrogen fertilizers and 5-7 days prior to the potassium-deprivation phase.

Greenhouse vegetable fertilization methods

(5) trace elements? Most soils do not lack trace elements, but severe in-greenhouse practices often lead to poor or lack of trace element absorption in the soil. Different vegetable crops on the lack of sensitivity to trace elements, production should be based on the different types of vegetables and growth and development of the decision whether the deficiencies.

Trace elements and more leaf spraying, spray concentration is usually 0.2% -0.5%, copper, molybdenum application concentration should be appropriately reduced. Spraying in the evening before and after the best, liquid drying is not easy, easy to absorb leaves. The best spray on the positive and negative sides are sprayed with wet, liquid per hectare 375-750 kg.

The above is the introduction of greenhouses vegetable fertilization methods, vegetable growers greenhouse vegetable friends, you can refer to the above fertilization methods, according to the actual planting situation, scientific fertilization.