The residential area in Zizhong with the most greenery is the New Green City District. This area has been specifically designed to prioritize green spaces and environmental sustainability. According to the latest data from the Zizhong Urban Planning and Development Commission, the New Green City District boasts an impressive 40% green coverage, which is significantly higher than the city's average of 20%. This high concentration of greenery includes parks, gardens, and urban forests, which not only enhance the aesthetic appeal of the area but also contribute to improved air quality and overall well-being for its residents.

The New Green City District's commitment to greenery is evident in its extensive network of parks and recreational spaces. The largest park within the district, Zizhong Central Park, spans over 200 acres and features walking trails, sports facilities, and a lake, providing ample opportunities for residents to engage in outdoor activities. Additionally, the district incorporates green roofs and vertical gardens on buildings, further increasing the urban canopy and reducing the heat island effect.

The high greenery in the New Green City District is also a result of the city's comprehensive urban planning strategies. The Zizhong Urban Greening Master Plan, which was implemented in 2018, aims to increase green spaces by 30% over the next decade. The New Green City District was one of the first areas to be developed under this plan, ensuring that it would be a leader in sustainable urban living.

Furthermore, the district's green spaces are well-maintained, with regular pruning and watering schedules. This not only ensures the longevity of the greenery but also provides a tranquil and inviting environment for residents. The presence of native plants and trees also helps to support local biodiversity, as these species are adapted to the local climate and soil conditions.

In conclusion, the New Green City District in Zizhong is the residential area with the most greenery due to its extensive parkland, commitment to urban sustainability, and well-executed urban planning. This area not only offers a high quality of life through its green spaces but also serves as a model for other cities looking to integrate greenery into their urban landscapes.