Urban landscaping in the lawn building and planting?

Along with the development of urban landscaping, lawn plays an increasingly important role in urban landscaping, occupies a unique position. In some plots of scattered places or underground facilities or thin soil layer and can not plant trees can be planted grass. In order to create a pleasant environment, to provide people with a good outdoor activities and some special functions such as airfield lawn, soccer fields, golf courses, tennis courts and other sports venues need, so that the lawn has been more and more widely used. However, due to some greening department in planting lawn when cutting corners, especially the lack of technical personnel, do not know the lawn planting of the relevant technology and problems, make after the completion of the lawn management is a waste of manpower and material resources, but also can not achieve the desired results. The following is to talk about lawn planting should pay attention to some of the problems. First, the grass to choose to build a lawn must first choose the right kind of grass, the choice of grass is the lawn can be built on the basic conditions. The choice of grass species should consider the following aspects: 1) adapt to the local environmental conditions, especially adapt to the small environment of the planting lot. 2) the use of different places, the choice of grass varieties are different. 3) according to the conditions of maintenance and management. In the conditions of the place can choose to need to fine management of grass species, and in the environmental conditions of the region, should be selected with strong resistance to grass species. In short, the choice of grass species should be used environment, use purpose and grass species itself have a full understanding, in order to make the lawn give full play to its functional benefits. Second, site preparation for laying lawn and planting other plants are different. To get high quality lawn, should be paved before the site for processing, mainly considering terrain processing, soil improvement and good drainage system. 1 thickness of the soil layer lawn plants are low herbaceous plants, no thick main root, shallow root system. 80% of the root system is distributed in more than 40cm of the soil layer, and more than 50% of the surface below the range of 20cm. Although, some lawn plants can tolerate drought and barrenness, they will grow poorly when planted on a 15cm thick layer of soil. In order to make the lawn to maintain excellent quality, reduce management costs, should be as far as possible to make the thickness of the soil layer to 40cm or so, preferably not less than 30cm, in places less than 30cm should be thickened soil layer. 2 land leveling and tilling the purpose of this process is to create the conditions for the growth of the root system of lawn plants. Step poly is: (1) weeds and debris removal in order to avoid the lawn built weeds and turfgrass competition for water, nutrients, in planting before the weeds should be completely eliminated. Glyphosate" and other inactivating systemic conductive herbicides [0.2-0.4 ml/m2 (amount of ingredients)] can be used, and grass planting can be started 2 weeks after use. In addition, all debris such as tiles and gravel should be removed from the field. Soil layers with a lot of debris such as rubble should be sifted through a 10mm x 10mm mesh to ensure that the debris is removed.

(2) the site of tilling, leveling and applying fertilizer after removing weeds and debris, the site for a high fill low leveling, leveling, withdrawing the application of fertilizer, and then generally plowed once. In the process of tilling, if you find that the soil quality of local lots is not good or mixed with too much soil, you should change the soil. After replacing the soil or tilling, it should be filled with water or rolled 2 times, so that the solid different places can show the height, in order to facilitate the final leveling.3 Drainage and irrigation system when the final leveling of the ground, we should combine the consideration of the ground drainage problem, there can not be a low concave place, in order to avoid the accumulation of water. Make into a horizontal surface is also not conducive to drainage. Lawns mostly utilize gentle slopes for drainage. In a certain area to repair a gently sloping ditch, its lowest down the end can be equipped with rainwater outlets to accept the discharge of surface water, and through the underground pipe drainage, or ditch directly connected to the lake pool. The ideal surface of a level lawn should be slightly higher in the center and gradually slope toward the surrounding edges. Buildings around the lawn should be lower than the foundation of the house 5cm, and then tilted outward terrain is too flat lawn, the water table is too high or gather too much water lawn, sports field lawn, etc. should be set up concealed pipe or ditch drainage, the most perfect drainage facilities is to use the concealed pipe to form a system with the free water surface or drainage pipe network connected. The lawn irrigation system is an important project to build the lawn, most of the domestic and foreign lawns use sprinkler irrigation, so in the field of the final leveling before, should be sprinkler irrigation pipe network is buried. Third, the planting method has a suitable source of grass and ready land, you can plant grass, with seeding, laying grass block, planting grass roots or planting grass vines and other methods can be. 1 sowing method is generally used for seeding large and easy to collect seeds of grass, such as bison grass, fescue, knotweed, moss grass, shearing grass, early harvest and so on can be used for seed propagation, to achieve the success of sowing, the following issues should be noted: (1) the quality of the seed Quality refers to two aspects, one is the purity, the second is the germination rate. Generally, the purity is required to be above 90%, and the germination rate is above 50%.? (2) Seed treatment Some seeds do not have a high germination rate not because of bad quality, but due to various morphological and physiological reasons. In order to improve the germination rate, to achieve the purpose of seedling whole, seedling strong, before sowing the seed can be treated. Such as fine-leaved moss grass seeds can be rinsed with running water for tens of hours; knotweed seeds soaked in 0.5% NaOH for 48h, rinsed with water before sowing; bison grass seeds can be mechanically rubbed off the hard shells and so on. (3) sowing amount and sowing time the larger the lawn seed sowing amount, the faster the effect, the more labor-saving post-sowing management. Seeds have single sowing and 2-3 kinds of mixed sowing, single sowing, the general dosage of 10-20g/m.2, should be based on the grass species, seed germination rate and so on. Mixed sowing, on the other hand, is in the period before relying on the basic seeds to form a lawn, mixed with some other seeds with fast coverage. For example, 85-90% morningglory with 10-15% clippings.

Sowing time: warm-season grass seed for spring, can be sown in late spring and early summer; cool-season grass seed for fall, the most suitable time for sowing in the north is early September. (4) seeding methods are strip seeding and sowing, strip seeding is conducive to post-sowing management, sowing can be early to achieve the purpose of lawn uniformity. Strip sowing is in a good site on the open ditch, 5-10cm deep, ditch spacing 15cm, with an equal amount of fine soil or sand and seed mixing evenly sprinkled into the ditch. Do not open the furrow for sowing, after sowing gently put the soil pressure, so that the seed into the soil 0.2-1cm. pre-sowing irrigation is conducive to the seed germination. (5) Post-sowing management to fully maintain soil moisture is to ensure that the main conditions of the emergence of seedlings. After sowing, spray water every day or every other day according to the weather conditions, seedlings can stop spraying water when they grow to 3-6cm, but often keep the soil moist and remove weeds in time.2 Planting method is simple to propagate with plants, which can save a large number of grass sources, generally 1m2 of grass can be planted into a block of 5-10m2 or a little more, compared to sowing, the management of this method is more convenient, so it has become the main method of planting prostrate strong grass seeds in northern areas of China. Grass species of the main method. (1) Planting time throughout the year can be carried out in the growing season, but planting time is too late, the year can not cover the ground, the best planting time is the middle of the growing season. (2)Planting method is divided into strip planting and hole planting, in the leveled ground with 20-40cm as the row spacing, open a 5cm deep ditch, put the torn grass blocks in rows into the ditch, then fill in the soil and step on it. Similarly, hole planting with 20-40cm as row spacing is also possible. (3) Measures to improve the effect of planting In order to improve the survival rate and shorten the seedling slowing period, two points should be noted in the transplanting process: first, the planted grass should have the right amount of root protection soil. The second is to shorten the time from digging grass to planting grass as much as possible, preferably on the same day of digging grass planted on the same day. After planting should be fully irrigated, remove weeds.3 paving method The main advantage of this method is the formation of lawn block, can be carried out at any time, and easy to manage after planting, the disadvantage is that the cost is high, and requires a rich source of grass. In addition, in recent years at home and abroad, there is a lawn planting belt paving method and blowing attached to two kinds of lawn, after careful maintenance can be bred into lawn, into the grass quickly, the effect is good.

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