Soilless lawn production technology
Turf plays an important role in the current urban afforestation, beautification and the construction of leisure and sports venues. Its production technology has been developed from the initial soiled direct sowing to the current landless scale production, and the development prospects are very promising. First, site preparation and seed selection For easing of culture medium, sowing and post-field management, the ridge width is generally 6 meters. When the site preparation is completed, the ground is required to be flat, the soil particles are fine, there is no waste, no gaps, and it is easy to lay the film and the film is tight to the ground. contact. The selection is mainly based on the soil, climate and other conditions and actual use of the cultivation site. From a practical point of view, in principle, if it is ornamental grass, we must consider grass green, beautiful appearance, neat and tidy, easy to trim; if leisure grass, then pay attention to the selection of resistance to trampling, crouching growth traits, strong ability of root propagation, can A tablet that forms a thick tablet. No matter which type is selected, the grass seed species with high germination rate, strong resistance to insects and insects, and good drought and waterlogging resistance should be used in general; for ph-acidic or partial-alkaline soils, certain acid or alkaline resistance must be selected accordingly. Grass species; the application of temperature is mainly in areas with low winter temperatures, we must consider the selection of grass species with strong low temperature resistance. According to the soil and climatic conditions in the southern region, we use tall fescue as the main ornamental grass species. Paradise grass, as the main leisure and sports grass, has achieved good results in practical applications. Second, the medium and seed treatment medium should choose a small density, there is a certain ability to maintain water and fertilizer matrix, not only to facilitate transport, but also reduce the number of watering and fertilization in the production process, reduce production costs. Prior to the laying of the upper ridges, they should be fully fermented and then mixed with appropriate amounts of nitrogen, phosphorus, potassium and trace fertilizers. To promote rooting and enhance resistance, appropriate amount of rooting agents and fungicides can be added. The current culture medium used in production is wolfberry, the rice husk. The compound fertilizer was prepared in advance with a ratio of nitrogen, phosphorus and potassium of 30.5: 7.5∶7.5. After mixing the appropriate amount of organic fertilizer in the alfalfa, it was fully fermented. The compound fertilizer was mixed one week before sowing and mixed every 100 kg of the medium. Into the 8 kg compound fertilizer, mix well, then spray the appropriate amount of rooting agent and fungicide, in order to facilitate the rooting of the seed and eliminate the adverse effects of harmful bacteria. Seeds before sowing should be sterilized, usually with a certain concentration of the solution can be used to form a seed coat for sterilization. Third, the timely laying of plastic film and culture media, uniform sowing soilless turf growth, short cycle, one year can produce 3 to 4 茬. Mainly based on the market situation and avoid adverse effects of high temperature on the turf, select the appropriate time for production. When laying the film, it must be flat and in close contact with the ground to prevent the roots from coming down and promote root growth in the medium. Membrane covered with good media, thickness of about 2 to 3 cm, after soaking the water evenly sowing, seeding controllable at 25 ~ 30 ug / m 2. When sowing must pay attention to spread evenly, in order to ensure that the formed blanket is uniform and compact, and the appearance is beautiful. In the early spring and low temperature season, it is possible to promote germination by coating, and to sprinkle ash to increase the temperature and promote germination. When the temperature is too high, apply a shade net to cool it properly. Fourth, the field management medium's ability to retain water and fertilizer is weaker than that of the soil. In the management of water and fertilizer, it should grasp the principle of a few times. Water management, sprinkler irrigation system can be used, depending on the status of the surface of the water on a regular basis, if the Ping surface has a white phenomenon, that is, the need for water, with water content of 80% is appropriate, not flood irrigation, to prevent the emergence of difficult Infiltration caused by flooded seedlings, affecting growth. If there is no sprinkler system, the medium and seed can be treated with a water-retaining agent, and the treatment of the culture medium is generally mixed at a ratio of 1:1. The seed treatment uses a water-keeping seed dressing agent and the seed dressing agent is used at a ratio of 1:2 to 5 The proportion of the water into the salty gel after absorbing water, the seeds immersed, remove the drying, the seeds can be dispersed after the mutual sowing. Application shall be based on the principle of fertilizing organic manure and chemical fertilizers. Organic manure shall be used as a base fertilizer and shall be applied to the culture medium before sowing. Fertilizer shall be used as topdressing. When the seedlings grow to the time of two leaves and one heart, top dressing will be started, but the dosage needs to be controlled. About 10 days before Pingping, it is applied once, and the application amount is 12.5 to 15 kg/mu each time. The proportion of compound fertilizer was mainly nitrogen and phosphorus in the early stage and nitrogen and potassium in the later stage. 5. Pingping and paving can be started from about 50 days after the emergence of the seedlings, and 5 days before the initiation of the pinging, a suitable amount of “fertility fertilizer†and a small amount of rooting agent should be applied. For ease of transport, the lawn can be cut into a 1.1-meter-meter grass blanket and rolled in a brisk roll, ready for transport. This kind of flat-cutting method does not hurt the roots, light weight, and is easy to transport, which helps to pave the way and take root. According to the distance between the production site and the cultivated land, the time of the grounding should be considered as the distance between the production site and the cultivated land. In principle, it is necessary to avoid operating at high temperature for a period of time. The actual production often takes place late in the evening and is transported at night. The pontoon immediately after arriving at the cultivation site in the early morning can prevent the high temperature. The damage caused by the grass blanket is conducive to the rapid growth and survival of the Ping Ping, especially when transplanted in the hot season. The effect is obvious. When pave the floor, it is required that the cultivated land should be leveled in advance and the grass blanket be laid on it. The roots should be closely contacted with the ground. It is better to compact it, and then water once to promote rooting. After proper watering according to the weather, generally about 7 days can survive. The soilless turfgrass grows fast, fast to the ground, is easy to transport, is easy to lay, densely turfed, grows neatly, and has a beautiful flat shape. It is particularly suitable for urban afforestation, beautification of the environment, layout of high-end residential communities, and the construction of leisure and sports venues. With the continuous development of urban construction, the production of soilless turf must have a broader market prospect.