Does dragon pit go up with fertilizer? First, understand the surface characteristics of pitaya plants. It belongs to the perennial vine plant of the family Cactaceae and has the physiological and ecological characteristics of drought-adapted plants. Its stems and leaves have been mutated, showing a triangular column of juicy green branches, and the leaves have been reduced to acupuncture points, distributed on triangular prisms. There are a large number of brown roots on the branches, which constitute all the vegetative organs of the pitaya. The foliar fertilizer is sprayed on the surface of the triangular prism shoots. In order to improve fertilizer efficiency, the application of foliar fertilizer on dragon fruit must be around the triangular column, and all three sides must be sprayed.
Second, the requirements of the surface characteristics of dragon fruit branches on the formulation of foliar fertilizer ingredients: the efficiency of foliar fertilizer has a great relationship with the surface characteristics and structure of the leaf. The epidermis stratum corneum is a barrier for mineral nutrients to enter the body, and the foliar wax is thick. The leaves, fat droplets do not easily penetrate the leaves, liquid droplets after spraying will fall from the surface, resulting in loss of nutrients without absorption and fertilizer efficiency. There is a hard and hydrophobic waxy layer on the surface of the dragon fruit triangle column, which puts special requirements on the preparation and application technology of the foliar fertilizer. In order to ensure the effect, good additives must be added to the preparation of the foliar fertilizer. Auxiliaries are auxiliary components of foliar fertilizers, which means additives other than nutrients in foliar fertilizers. The fertilizer system of the foliar fertilizer is more complex and important. It plays a decisive role in maintaining the excellent physical and chemical properties of the foliar fertilizer and ensuring product quality. The main components of the additives are surface active substances, which have a series of functions such as infiltration, penetration, emulsification, dispersion, solubilization, and moisturizing. Adding a very small amount of surfactant generally can significantly reduce the surface tension of the fertilizer solution, which is particularly important for fertilizer efficiency. Because the hydrophobic waxy layer on the surface of the dragonfruit triangular column branches is thick, the water-soluble foliage fertilizer is not easy to infiltrate and penetrate, which will directly affect the absorption effect of nutrients. Only the additives with excellent performance can be used to make the foliage fertilizer stick and spread on the surface of the triangular column to extend the moistening time and achieve the purpose of nutrient absorption. Although a wide variety of surfactants are on the market, experimental studies at home and abroad have shown that the use of organic silicon, betaine, and other additives is better. These are also suitable for dragon fruit special foliar fertilizers.
The selection of nutrients for foliar fertilizers should be based on the supplementation of micro and micronutrient elements, combined with the principle of combining large amounts of nutrient elements. In the longer maturation period from April to November each year, the results will be supplied with magnesium, boron and nitrogen in the early stage. Lord, more attention should be paid to the successive additions of potassium, nitrogen, magnesium, calcium, iron, and boron in the middle and later stages. They are all beneficial for improving the resilience and improving the quality of pitaya. In addition, in order to increase the specificity of foliar fertilization, we must also refer to the restrictive nutrients in the soil, and it is best not to select Shiquandafen, which is expensive and untargeted. The effect is not necessarily good.
Third, the photosynthetic and metabolic characteristics of Pitaya have special requirements for the application of foliar fertilizers. The pitaya, which is native to arid regions and has juicy characteristics, belongs to the plant of the type of Jingtian acid metabolism. Their stomata are open at night and closed during the day. This opening and closing of stomata is contrary to other carbon 4 plants. Since the main way for the nutrients of the foliar fertilizer to enter the plant body is through the cracks of the stomata and epidermal tissue, the best time to spray fertilizer on the pitaya leaf surface is after 5-6 pm. Spraying the sun is beneficial to the absorption of nutrients when the sun goes down. . In addition, the concentration of nutrients in the foliage, the characteristics of pitaya can be properly increased by 10% -20%, the effect is better.
In short, the effect of foliar spray fertilizer is faster than that of root fertilization, and it can directly reach the pitaya nutrient directly to avoid the fixation of fertilizer nutrients in the soil. But the disadvantage is that the amount of fertilizer is limited and the effect is short-lived. Therefore, foliar fertilization is an auxiliary method for fertilizing dragon fruit. It may be appropriate to use it in conjunction with root fertilization to increase yield.
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.
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