China News Service, Jinhua, April 16 (Dong Yixin and Ji Junlei) "From May to September every year is the 'barbaric growth period' of the lawn, and now the lawn needs to be 'haircut' once or twice a week, and the mowing height is controlled at 20 mm to 25 mm." Shen Weihong, a 51-year-old lawn maintenance engineer, said recently in Jinhua, Zhejiang.
The Hangzhou 2022 Asian Games (hereinafter referred to as the Hangzhou Asian Games) will be held from September 10 to September 25 this year.
As one of the co-host cities of the Hangzhou Asian Games, Jinhua City in the province will host the takraw and football group matches.
The East Stadium of Zhejiang Normal University in Jinhua will hold the Hangzhou Asian Games football group match. Shen Weihong is mainly responsible for the lawn renewal and maintenance here.
East Stadium of Zhejiang Normal University.
Photo by Zhu Hui
The lawn planted here is a specially cultivated variety. The laying structure under the turf can be roughly divided into sprinkler irrigation system, drainage blind pipe, gravel layer, non-woven fabric, medium-coarse sand layer of about 10 cm, nutrient soil (planting soil), etc.
"After the 'frame' under the turf is built, the lawn planting of the entire site can be completed in about one day." Shen Weihong said that the staff generally first use large grass rolls 10 meters long and 1.2 meters wide to plant, and then Use a lawnmower to compress the lawn gap, and finally use a roller compactor to flatten the lawn.
Shen Weihong maintains the lawn.
Photo by Ji Junlei
"To the naked eye, the football field looks very flat, but it is actually high in the middle and low on both sides. It is designed to prevent the lawn from accumulating water during the rainy season. When laying the turf, we use a satellite positioning system. If the slope is not up to standard, it will Make adjustments such as filling." Shen Weihong said.
It is reported that the current test data such as color density uniformity, tension, flatness, water seepage rate, ball rebound rate and rolling speed of this turf are qualified to undertake international competitions.
Shen Weihong maintains the lawn.
Photo by Ji Junlei
There is still a period of time before the Hangzhou Asian Games, and the lawn will be "escorted" by modern technology-under the lawn, sensors that monitor the land temperature, humidity, nitrogen, phosphorus and potassium content and pH value in real time are installed, which can transmit real-time data to Maintenance personnel, realize the whole process record and life cycle management of lawn maintenance.
"I have been in the lawn planting and care industry for 28 years. I am very happy to be able to update and maintain the lawn for an important event at the door of my house this time," said Shen Weihong.
(Finish)