After the lawn is built, in addition to reasonable maintenance management such as fertilization, irrigation, and pruning, it is also necessary to aerate in time. From the needs of lawn grass growth and development itself and the lawn function, aeration measures are very important. Aeration is a maintenance measure that selects appropriate aeration machinery to punch soil rolls from the lawn at an appropriate time, improves the physical properties and other characteristics of the lawn, accelerates the decomposition of the lawn twig layer, and promotes the growth and development of the above-ground and underground parts of the lawn. Choosing high-quality grass seeds from Chunyin can effectively improve the resistance of the lawn.
First, there are many aeration machines, and there are two main types commonly used: one is a circular motion aeration machine, and the other is a vertical motion aeration machine. The vertical motion aeration machine has hollow sharp teeth. It causes less damage to the lawn surface when working, and the aeration depth is large, up to 8-10 cm, and it has both forward and vertical aeration methods. The rotary machine has open shovel-type hollow tines. Its advantages are fast working speed and less damage to the lawn surface, but the drilling depth is shallower than that of the vertical motion puncher. According to the size of the tines and shovels of these two punchers, the diameter of the punched soil roll varies between 6-8 mm, and the vertical height of the punched soil roll also varies with the compactness of the soil, the bulk density and water content of the soil and the penetration ability of the puncher. Generally, the tighter the soil, the greater the soil capacity, the lower the water content, and the deeper the drilling. The greater the puncture ability of the puncher, the deeper the drilling. The main function of drilling is to improve the air permeability of the soil. After the soil roll is punched, although the air permeability of the soil between the holes, the part below the hole, and the parts around and at the bottom of the hole is not improved, a series of small holes are left on the soil surface, which increases the roughness of the soil and expands the surface area of the soil, so the air permeability and water permeability of the soil are greatly improved.
2. Effects after aeration: aeration is conducive to releasing harmful gases in the soil, improving the wetting characteristics of soil or hydrophobic soil, accelerating the drying of long-term wet soil, improving the permeability of soil with compacted surface or thick twig layer, promoting the growth of roots in the hole after the soil roll is punched out, improving the exchange capacity of soil cations, improving the soil’s ability to retain nutrients and water, and accelerating the decomposition rate of organic residues.
3. The adverse effects after aeration temporarily destroy the integrity of the lawn surface. Due to the exposure of the turf soil layer, it will cause local dehydration of lawn grass. When conditions are suitable for weed seeds to germinate, some weeds will often be produced, accelerating the damage of pests such as cutworms. For very compact lawn soil, as long as water is not limited, aeration can improve the growth conditions near the hole. If aeration is repeated for several consecutive years, the growth conditions of the entire lawn will be improved.
The aeration time is very important. Under drought conditions, the lawn grass will be severely dehydrated locally. For example, in midsummer, after drilling on a dry and hot day, the creeping bentgrass lawn will be severely dehydrated locally. Therefore, it is more appropriate to drill holes when the lawn is growing luxuriantly and the growth conditions are good. Drilling should not only pay attention to the time, but also be closely coordinated with other measures. For example, surface fertilization and irrigation immediately after drilling can effectively prevent the dehydration of lawn grass and improve the utilization rate of fertilizer by the roots.
Due to the expansion of the surface area of the lawn soil, which can generally be more than doubled, the contact area between the lawn soil and air and water is increased, the water absorption and permeability of the soil and the aeration of the soil are improved, which is conducive to the reproduction of aerobic microorganisms, the effective oxygen content of the soil is increased, the oxygen release capacity of the soil is improved, and the decomposition rate of the ground twig layer and other organic residues is accelerated.
After hole drilling, a series of small holes will be left on the lawn surface, but due to trampling, irrigation and lateral flow of soil, the holes will be quickly filled, thus shortening the period of the drilling effect. In order to improve the effect of drilling, it is usually necessary to apply soil on the surface after drilling and clean the soil rolls. Use materials that are different from lawn soil, such as sand and nutrient soil, for surface application. When these materials fill the holes, the soil is still very breathable, and it is also beneficial to the decomposition of the twig layer. If the surface application material is fertilizer, it can increase the horizontal and vertical fluidity of highly immobile fertilizers such as lime and phosphorus in the soil, accelerate the dissolution rate of fertilizers in the soil, improve the quick-acting nature of fertilizers, and prevent the volatilization loss of nitrogen fertilizers. Surface application after drilling is beneficial to both. In addition, the soil rolls after drilling must be cleaned up to prevent the soil rolls from sticking to the lawn grass after watering, which not only affects the landscape but also easily causes diseases and weeds.
Post time: Dec-13-2024