摘要
采用Bowman和Cole提出的有机磷分级体系,分3个灌水量对外源活性有机磷β-甘油磷酸钠在黄棕壤中的淋溶和转化特征进行了研究。结果表明,大于50mm的灌水量可以使β-甘油磷酸钠发生淋溶。施入黄棕壤中的β-甘油磷酸钠在24h内可以转化为速效磷和中活性有机磷,灌水量愈大,速效磷和中活性有机磷积累的土层也愈深。中稳性有机磷和高稳性有机磷含量没有明显变化。
The leaching and transformation of β-Sodium glycerophosphate in Yellow-brown earths were studied with Bowman-Cole method under 3 different irrigation norms.The results showed that β-Sodium glycerophosphate could transfer to Olsen P and moderately labile organic P in 24 hours.The accumulation depth of Olsen P and moderately labile organic P increased when irrigation rate was up.The contents of moderately resistant organic P and highly resistant organic P in soil layers had no significant change between treatments.
出处
《土壤通报》
CAS
CSCD
北大核心
2007年第6期1110-1113,共4页
Chinese Journal of Soil Science
基金
国家"973"项目(2002CB412302)
关键词
β-甘油磷酸钠
黄棕壤
淋溶
转化
Organic P
Yellow-brown earths
Leaching
Transformation
