What are the methods of hotel greening, maintenance and drainage?

Common drainage methods are: (1) surface runoff: the surface slope is controlled at 0. 1 ~ 0.3%, leaving no potholes and dead ends; (2) Open ditch drainage: suitable for grabbing and draining accumulated water after rainstorm; (3) Underground drainage: underground drainage pipes are used and connected with drainage ditches or municipal drainage, but the cost is high. The principles of grassland conservation are: uniformity, purity, and evergreen all the year round. According to the data, under the general management level, green grassland (grass in Taiwan Province Province) can be divided into four stages according to the planting time. First, the stage from planting to complete growth refers to the stage from the initial planting of grassland to one year or full coverage (100% full of vacant land), also called complete growth period. The second is vigorous growth period, which refers to 2-5 years after planting, also known as vigorous growth period. The third is the slow growth stage, which means 6- 10 years after implantation, also known as the slow growth stage. The fourth is the degradation period, which means 10- 15 years after planting, also called the degradation period. At a higher level of protection and management, the grassland degradation period in Taiwan Province Province can be postponed for 5-8 years. The degradation period of coniferous grass is 3-5 years later than that of Taiwan Province grass, while that of big leaf grass is 3-5 years earlier. According to the design and technical requirements, weeds and stalks should be strictly removed from the ground bed of newly planted grassland, and pure foreign soil should be filled in to flatten and compact to more than 10 cm before turf can be affixed.

There are two kinds of turf sticking: one is full sticking and the other is thin sticking. Generally, a square lawn with an area of 20 × 20cm is left blank, and the whole piece has no full-time cycle. It's just that the recovery period is 7- 10 days, and it takes some time for 50% of the open space of the sticker to be filled. The whole period of spring paste and summer paste is only 1-2 months, while the whole period of autumn paste and winter paste takes 2-3 months. ? In maintenance management, we should focus on water and fertilizer management, stick anti-waterlogging in spring, sun protection in summer and wind and moisture protection in autumn and winter. Generally, water is sprayed once in the morning and evening within one week after the grass is pasted, so as to check whether the turf is compacted, and the grass roots are required to cling to the outer soil. Spray water every night for two to two weeks after sticking, and generally once every two days after two weeks depending on the season and weather conditions, mainly to moisturize. Fertilize once every half a month from one week to three months after fertilization, spray with 1-3% urea solution, dilute first and then concentrate, then use 4-6 kilograms of urea once a month, dry in rainy days and clear in sunny days, and mow the grass with a lawn mower when all the grass is 8- 10 cm high. Weeds should be removed within half a month after planting and in January at the latest. Weeds should be dug up and uprooted in time, and compacted after digging, so as not to affect the growth of main grass. Newly planted grasslands are generally free of pests and diseases, so there is no need to spray drugs. In order to accelerate the growth, 0. 1-0.5% potassium dihydrogen phosphate can be watered and sprayed in the later stage.

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