摘要
在试验室条件下研究了不同水分含量对取自中国的潮土和日本的火山灰土硝化动态的影响。潮土在土壤硝化过程中的土壤水分含量以田间持水量的60%～90%较为适宜,低于田间持水量的60%引起土壤硝化力降低。火山灰土在土壤硝化中的土壤水分含量以田间持水量的75%～90%较为适宜,低于田间持水量的75%引起土壤硝化力降低。潮土在硝化培养中有亚硝酸盐出现,火山灰土没有亚硝酸盐被检出。土壤亚硝酸盐含量在低水分含量下峰值低,持续时间较长,在高水分含量下峰值高,持续时间较短。
A laboratory incubation experiments with Chinese Chao soil, Lingxian, Shandong and Japanese Andisol, Tsukuba, Ibaraki was conducted to study the effects of different soil water contents on the soil nitrification activities. The moderate soil water content was 60%～90% and 75%～90% of water hold capacity (WHC) for Chinese Chao soil and Japanese Andisol respectively. The nitrification activity decreased when soil water contents lower than 60% and 75% of (WHC) both for Chinese Chao soil and Japanese andisol respectively. Nitrite appeared in Chinese Chao soil and no nitrite was detected in Japanese Andisol. The peak value of nitrite was low and maintain long time when in a low moisture, in contrast, the peak value of nitrite was high and maintain shot time in a high moisture.
出处
《土壤肥料》
CSCD
北大核心
2004年第5期21-24,共4页
Soils and Fertilizers
关键词
潮土
火山灰土
土壤水分含量
土壤硝化
亚硝酸盐
Nitrification
Chinese Chao soil
Japanese Andisol
soil water contents
Nitrite
