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在湘中一带,土壤分布主要以第四纪网纹石砾红粘土为主。该类型土壤有机质含量低(0.1％),土层一般浅薄,呈酸性,植被稀少,水土流失严重,土壤发育多停留在幼年状态。该区海拔多在200米以下,年平均气温16.5-17.5℃,积温5000-5700℃,年日照1500-1700小时,年太阳总辐射105-110千卡/厘米~2,热量丰富,夏季高温酷热,冬不严寒,春冬冬寒潮频繁,降雨多,年降雨在1300-1600毫米,但40％雨量集中在4-6月份。鉴于该区气候及土壤特点,在城市园林绿化中草坪的营造以及广大农村护坡、护土,防止水土流失等草种的选择,显得尤为重要。
In the middle part of Hunan Province, the soil distribution mainly consists of quaternary vetiver gravel red clay. This type of soil organic matter content is low (0.1%), the soil is generally shallow, acidic, scarce vegetation, serious soil erosion, soil development and more stay in the juvenile state. The area is mostly at an altitude of 200 meters above sea level, the annual average temperature of 16.5-17.5 ℃, accumulated temperature 5000-5700 ℃, the annual sunshine 1500-1700 hours, the annual total solar radiation 105-110 kcal / cm ~ 2, rich in heat, hot summer heat Winter is not cold, winter, winter and winter cold frequent, rainfall, annual rainfall of 1300-1600 mm, but 40% of the rainfall concentrated in April-June. Given the climatic and soil characteristics of the area, it is particularly important to create lawns in the urban landscaping as well as the selection of grass species such as slope protection, soil conservation and water and soil erosion prevention in rural areas.