摘要
为了探寻油茶林地土壤改良模式,研究了生草栽培对油茶林地土壤理化性质的影响情况。结果表明：生草栽培具有冬春季增温而夏季降温的作用,春季可增温1℃以上,夏季不仅能使土壤温度降低12.5℃,还大大降低了高温出现的频率;林地生草有利于保持土壤水分,尤其是南方干旱少雨的7、8月份,可使0-20、20-40和40-60 cm土层的含水量分别提高15.90%、7.14%与2.78%;生草栽培不仅能降低土壤容重,提高其孔隙度和田间持水量,还能显著提高土壤中有机质、速效磷和速效钾的含量。
In order to explore a new soil improvement model of Camellia oleifera forest, effects of sod culture on soil physical and chemical characteristics of C. oleifera forest were researched. The results show that sod culture had the functions of adjusting soil temperature, increasing soil temperature over 1 ℃ in Spring, decreasing 12.5 ℃ in Summer and greatly decreasing appearing frequency of high soil temperature. Sod culture benefits keeping soil moisture, especially in July and August of lacking of rainfall in southern region of China, and it can increase water storage of 0-20 cm, 20-40 cm and 40-60 cm soil layers by 15.90%, 7.14% and 2.78% respectively. In addition, sod culture can not only decrease soil bulk density and increase soil porosity and field moisture capacity, but also increase the contents of soil organic matter, available P and available K in C. oleifera forest soil.
出处
《经济林研究》
北大核心
2014年第3期76-80,共5页
Non-wood Forest Research
基金
湖南省科技重大专项计划项目(2013FJ1006-3)
关键词
油茶
生草栽培
土壤
理化性质
Camellia oleifera
sod culture
soil
physical and chemical characteristics
