Lawn Management - Fertilizer Introduction

Nitrogen fertilizer: It can be directly absorbed by plants, so it is mostly applied as a topdressing fertilizer at the time when turfgrass is most needed. There are many kinds of nitrogen fertilizers, which can be divided into four categories: ammonium, nitrate, amide and long-acting nitrogen fertilizers. Among them, urea is the highest nitrogen fertilizer in solid nitrogen fertilizer, which can be used as base fertilizer and topdressing fertilizer. Deep application method can improve fertilizer efficiency, and can also be used as a nitrogen topdressing fertilizer. The effect is better than other nitrogen fertilizers, and its content is 0.5%~2.0%. The concentration should not be too large, otherwise it will poison the plants and even cause the plants to die. Phosphatic fertilizers: The effective application and complexity of phosphate fertilizers must be comprehensively considered based on soil shape, plant characteristics, crop rotation systems, phosphate fertilizer varieties, and application techniques in order to achieve reasonable application of phosphate fertilizers. For uni-planted turfgrass, the application rate of phosphate fertilizer can be controlled at 200-400g/m2.a (P2O5). Potash fertilizer: Most grass turf plants use potassium fertilizers for good results, especially for legume turf plants. In general, K2O is applied to 60-70 kg per hectare of soil, and the potassium-tolerant crop can be increased in an appropriate amount. Potassium fertilizer is easy to deepen, apply early and relatively concentrated, with a depth of 6 to 12 cm. Potassium phosphate acts on gramineous turfgrass, which can make the grass beautiful, green grass and improve the garden effect. With a dosage of 75 kilograms per hectare, the basal, seed and top dressing effects are all good. Compound Fertilizer: It is mainly used for formulating a special turfgrass. It is mainly formulated according to different proportions of nitrogen, phosphorous and potassium elements and formulated for specific lawns. Micro-fertilizer: mainly refers to the fertilizer made up of trace elements, which can be used as basal fertilizer, seed fertilizer or top-dressing fertilizer, and can also be directly used in a certain part of the plant, such as seed treatment or root spraying. In areas where the soil is dry and water is scarce, it is better to apply micronutrients than to spray micronutrients. The amount of micro-fertilizer is small, and the application must be uniform, and it can be mixed into organic fertilizers for application. Generally, the amount of micro fertilizer applied outside the root is generally only 1/5 to 10/1 of the amount of soil fertilization, and the commonly used concentration is 0.01% to 0.2%. Fertilizer: It is a kind of auxiliary fertilizer. It is generally mixed with chemical fertilizer or organic fertilizer instead of single fertilizer. The commonly used bacterial fertilizer for gramineous lawn is nitrogen-fixing military expenditure, which is independent in the soil and is suitable for PH value 7.4-7.6. The fertilizer efficiency of the fungus fertilizer is strictly limited by the soil and other environmental conditions. Under unfavorable conditions, the microorganisms in the fungus fertilizer are inhibited or even died, so they should be applied cautiously. Multi-functional fertilizers: At present, multi-functional fertilizers are used in the form of multi-functional fertilizers made of wastes of full-price fertilizers combined with herbicides, fungicides, and insecticides. The advantage is that it saves time, labor, and equipment. The disadvantage is that it is difficult to choose the right fertilization time, because the best fertilization time is not necessarily the best time to control pests and weeds. Therefore, we should choose to eradicate pests or weeds. Many companions of many factories and bioproducts factories in the production process (such as the end of the cigarette factory, the waste of the pharmaceutical factory, etc.) have a high utilization value in the formulation process of turf fertilizer, and a certain proportion is added to the fertilizer preparation. Not only can be used as a buffer between fertilizers, but also the effect of insecticidal and bactericidal. This is also the development trend of lawn multi-functional fertilizers.

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