期刊论文

中文

湖南农业大学学报(自然科学版)

1007-1032

2012

38

5

526-529

10.3724/SP.J.1238.2012.00526

(2009BADC6B005):国家科技支撑计划重点项目 (201103005):国家公益性行业(农业)科研专项

本校为第一机构

通过野外采样和室内测定,研究湖南永州市和浏阳市柑橘、油茶、西瓜单作和柑橘间套作、油茶间套作以及荒地模式下的丘岗红壤的酸性和交换性状况。结果表明:不同种植模式下土壤的酸化情况严重(pH值约为4.0);土壤保肥能力均为中等偏下(CEC为8.7~10.96cmol/kg),相比较而言,以油茶间套作土壤的保肥能力较强;柑橘间套作土壤的交换性酸和交换性Al~(3+)最低,其潜性酸最低,土壤的交换性盐基总量和盐基饱和度最高,其肥力、保肥和缓冲能力最强;供试土壤的交换性酸均以交换性Al~(3+)为主,占比为92.5%~95.1%,交换性盐基主要为交换性Ca~(2+)、Mg~(2+),占比为82.7%~91.8%;不同种植模式土壤的CEC含量差异显著,土...

Soil acid and exchange properties of red soil in hilly regions under continuous cropping of citrus,camellia and watermelon,under intercropping of citrus with camellia,grass,peanut or sweet potato,under intercropping of camellia with watermelon and under wasteland pattern in Yongzhou and Liuyang,Hunan Province were studied through field sampling and laboratory analysis.The results showed that soils under different cropping patterns were acidified seriously with pH value around 4.0 and showed low to middle fertility-preserving capacity with CEC b...