After the beginning of autumn, as the temperature gradually decreased, the lawn also entered the recovery phase of conservation. The situation in each climatic region is not the same. Therefore, the turf restoration and maintenance programs for different courses will not be exactly the same. Based on my understanding of the stadium's conservation for many years, the author maintained it in the next stage after the beginning of the autumn. Each lawn director can't only consider the immediate restoration management, but also consider the comprehensive situation of overwintering and returning to spring. Therefore, the establishment of a long-term fertilization plan is very important for every turf director. north For the Yellow River basin and the north of the stadium, the temperature difference will significantly increase after entering September. At this time, it is better to drill holes, especially large hollow holes. For greens and tees, apply organic fertilizers containing natural nitrogen, phosphorus, potassium, and trace elements, such as 6-3-2, 5-5-1, and 5-2-4 (N:P : K), in which the nitrogen element must come from the natural material itself, and the application amount may be 100g/m2. The specific method is: first remove the sand core after drilling, then fertilize it, sweep the fertilizer into the hole as much as possible, then sand and water, which can effectively improve the soil structure, and lay a solid foundation for the growth of the entire autumn. Foundation. If applied properly, there is no need to consider drilling or puncture this fall, and microorganisms can be used to solve soil compaction problems. If you do not want to apply organic fertilizer, you can also consider the application of organic, inorganic fertilizers, for example, 15-3-7, 13-2-10, 10-5-10 (N:P:K) ratio. The specific operation method can refer to organic fertilizer, but the amount should be reduced to 50g/m2 to 60g/m2. Which formula should be applied in particular should take into account factors such as the fertilizing formula and lawn color and density in the early stage of the court. If the previous application of more nitrogen, the turf color is also good, you can use low-nitrogen formula, if the density is not enough, you can use high-phosphorus formula. If the content of organic matter in the soil is relatively high, and the permeability of the soil is also good, then MU or coated slow-release fertilizer can be used first, and the formula can be used for 20-5-10 or 18-6-12 (N:P:K) This high-nitrogen, low-phosphorus, medium-potassium formula can quickly restore the lawn. For fairways and long grass areas, if the stadium budget is sufficient, organic fertilizers can be applied in combination with drilling. The method can be the same as the management of the greens. The amount of organic fertilizer applied is between 120g/m2 and 150g/m2, the amount of organic-inorganic fertilizers. It can be 70g/m2 to 80g/m2. If the conditions do not allow, can use MU or coated slow-release fertilizer, formula for 20-5-8, 20-5-10, 18-6-12 (N: P: K), about 35g/m2 each time . However, the formula must have calcium, magnesium, and sulfur in the amount of nutrients, can not only contain nitrogen, phosphorus, potassium, can add trace elements. south Although the temperature in the Yangtze River valley will gradually decrease in September, the reduction will be smaller and the temperature will generally be higher. Green fertilizers can still be used for high-potassium fertilizers, such as the MU-type fertilizers with the proportion of 18-3-18 and 16-3-20 (N:P:K). According to the decrease in temperature, organic fertilizers or organic-inorganic fertilizers can be applied with drilling in late September and early October. Since most fairways in the Yangtze River Valley have to be broadcasted, some stadiums will be broadcasted before the end of September. Therefore, many courses do not have time to drill holes. It is recommended that high-nitrogen organic-inorganic fertilizer be applied first, for example: 15-3. 7,13-2-10(N:P:K) Potassium Sulphate type formulation, after application of 20-6-10 or 18-6-12(N:P:K) MU or coating Release fertilizer. South China and Hainan have no significant changes in temperature after the end of October. Therefore, it is advisable to use low-nitrogen, medium-phosphorus, high-potassium MU or coated slow-release fertilizers for fertilization in August and September. Because of the relatively large amount of rainfall in the previous period, the cations in the soil may be lost in a large amount and the soil tends to be acidified. It is best to use calcium magnesium fertilizer in this period of time. Greens and tee tables can be used with 16-3-24 or 14-2-20 (N:P:K) ratios, and 16-6-16 or 14-5-18 can be used for fairways and long grass areas. : P: K) ratio.
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