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Rules of golf application papers
1, Trim (1) Clean the green for foreign objects every time. Hard objects such as branches, stones, shells and metals must be removed, otherwise they will be embedded in the green grass and damage the leaves. It is necessary to repair the hitting mark, and improper repair of the hitting mark will produce many depressions during trimming. (2) The trimmer must use a special green trimmer. The pruning frequency is usually once a day. In the morning, reducing the pruning frequency will lead to lower lawn density and wider leaves. However, pruning can be stopped for at least one day during sand laying, farming or fertilization. The optimum mowing height of green lawn is 4.8 ~ 6.4 mm, and the range is 3 ~ 7.6 mm, but the lower the mowing height, the better. (3) Pruning mode The direction of pruning usually needs to be changed every time, the principle of direction change and one of the four directions to reduce the generation of unidirectional tillers. This method can be designed in four directions of the clock dial, such as 12 to 6: 00, 3: 00 to 9: 00, 4: 30 to 10: 30, and finally 1 30 to 7: 30. After a round in these four directions, the cycle is repeated, and the result is an obvious strip pattern in the form of a grid. (4) Removal of trimming. After mowing the lawn, collect it in the grass box and then move it out of the green. Otherwise, grass clippings will make the lawn below have poor air permeability and cause diseases and insect pests. (5) The control of one-way tillering buds in lawn. Accessories such as brush grass comb in lawn mower can be used to correct or prevent the generation of unidirectional tiller buds. When the lawn grows vigorously, slight vertical pruning of the green lawn every 5 ~ 10 days can correct the problem of one-way tillering buds. The grass comb or vertical mower should be adjusted to the surface of the lawn. (6) When pruning, it should be noted that the operator should wear flat shoes to avoid the damage of nailing the sole to the green; When pruning, pay attention to prevent gasoline, engine oil or diesel oil from leaking and falling on the lawn to produce small dead angles; Pay attention to the scratches on the turf. Generally, the turf is not dense enough or the surface smoothness of the straw mat layer is too thick. After the rain, the straw mat layer swells after soaking in water, which easily softens the turf. The increase of 1.6 mm should be adjusted and trimmed every few days or 1 ~ 2 days. 2. Fertilization (1) Fertilization time: Full-price fertilizers containing nitrogen, phosphorus and potassium are usually applied in spring or autumn, and nitrogen fertilizer needs to be supplemented regularly in other growing seasons. (2) Fertilization method: It is best to use a centrifugal seeder to apply dry fertilizer, and finally apply it vertically. In particular, water-soluble fertilizers are generally applied when the leaves are dry, and water is poured immediately after application to avoid scalding the leaves. In order to prevent the lawn from burning sand due to fertilization, it should be noted that the grass just cut will not be fertilized afterwards; Do not mow the grass on the day of fertilization; No grass collector was installed during pruning; Pierce the green before fertilization. Sufficient nitrogen fertilizer must be applied to maintain the basal bud density, sufficient recovery potential, basal bud growth rate and normal color of lawn grass. Generally, nitrogen is applied every 10 ~ 15 days 1 ~ 2.5g/m2. Potassium fertilizer: Due to the heavy sand of the green lawn, potassium fertilizer is easy to leak, which is not conducive to maintaining the heat resistance, cold resistance, drought resistance and trampling resistance of the lawn and promoting root growth. Finally, according to the results of soil analysis, the application scheme of potassium fertilizer is determined. Generally, the demand for potassium fertilizer is 50% ~ 70% of nitrogen, and sometimes more potassium fertilizer is more ideal. Under the condition of high temperature, drought and long trampling time, apply potassium fertilizer every 20 ~ 30 days. Phosphate fertilizer; The demand for phosphate fertilizer is small, and it should also be carried out according to the results of soil analysis, usually in late spring and early summer. 3. Irrigation irrigation is one of the most important maintenance measures for green lawn maintenance. It should be determined according to the specific needs of each green space and its influencing factors. (from "/thread-7927-1-1.html")