Fertilizers have a "reciprocal relationship" and a "contrast" contradiction. If more phosphate fertilizer is applied, the excess available phosphorus is combined with the available zinc in the soil to form a poorly soluble zinc phosphate precipitate, which causes a lack of available zinc in the soil. Not only that, the excess available phosphorus can also inhibit nitrogen uptake by the crop, causing a nitrogen deficiency. Another example is applying more potassium fertilizer. The excess potassium will reduce the absorption of nitrogen, magnesium, calcium, boron and zinc by the crop, causing the crops to lack these nutrients. In addition, do not apply too much organic fertilizer.
To prevent the “phase gram†between fertilizers, the following methods can be adopted:
1. Try to achieve balanced fertilization. The partial or multiple application of elemental fertilizers to crops not only causes waste and increases production costs, but also easily leads to the lack of some or some other nutrients. When fertilizing, it is necessary to make a living within the limits according to the different structure of crops and the ability of soil supply.
2. According to the crop's demand for various nutrient elements, it is necessary to increase and increase, and decrease and decrease. Compared with elementary fertilizers, the proportion of the nutrient elements of compound or compound fertilizers is more appropriate and harmonious. Therefore, fertilizer application should be based on compound fertilizers and supplemented with elemental fertilizers. For example, for crops that require large amounts of potassium, such as vegetables with tubers and roots, they can be appropriately increased on the basis of sulfur-based compound fertilizer Potassium sulfate elemental fertilizer as a supplement.
3. Stagger application period or application site. If zinc fertilizer and phosphate fertilizer are mixed, it will inevitably produce "phase grams". Therefore, phosphate fertilizer should be used as the base fertilizer or basal fertilizer, zinc fertilizer should be used as a topdressing fertilizer. Nitrogen, phosphorus, potassium and other large-element fertilizers should be based on rhizosphere topdressing, and micro-fertilizers should be applied by foliar spraying.
4. Narrow contact area. Nitrogen and potassium fertilizers can be applied by spreading methods; phosphorus fertilizers can be applied by concentrated fertilization; micro-fertilizers can be used by seed dressing, soaking, and dipping roots, so that trace elements are confined to a smaller range of the roots, and as far as possible Elemental contact.
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Greenhouse Drip Irrigation System
Fertigation is using your irrigator to fertilise the plants and soils as you water, which is the most efficient and advanced practice of fertilization. Aid of pressure system (or natural divide terrain), the soluble solid or liquid fertilizer, according to the soil nutrient content and crop fertilizer regularity and characteristics of species, with the fat of with irrigation water, through a controlled water supply pipeline system, supplying, the compatibility, water through the pipe and drop head form drip irrigation, uniform, regular, quantitative, infiltration area crop root growth and development, make the main root soil always stay loose and appropriate moisture content, at the same time according to different crop fertilizer characteristics, environment and soil nutrient content in soil; Crops in different growth phase water requirement, the different development stages of the fertilizer rule is the demand of design, the water and nutrient timing quantitative, provided directly in proportion to the crops.
Greenhouse Drip Irrigation System,Greenhouse Micro Irrigation System ,Plant Drip Irrigation
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