摘要
利用根盒培养和田间栽培方法,研究了黑土和黑钙土玉米根际有机磷的亏缺和积累的状况。结果表明:玉米苗期根际活性有机磷(AOP)和中等活性有机磷(MAOP)亏缺,其亏缺率为6％～8％,而中稳性和稳性有机磷(F-P,H-P)无明显变化。玉米成熟期根际有机磷存在富积现象,这主要与成熟期根系吸磷能力下降,根际淀积物产生及前期吸收的矿质磷泌出有关。
Rhizo-box and field cultivation methods were used to study the delpletion and accumulation of organic P in maize rhizosphere on blackland and chernozem. The results indicated that during seedling period the depletion of active organic P (AOP) and middle active organic P (MAOP) occurred, with the depleting rates from 6% to 8%. The middle stable organic P (F-P) and stable organic P (H-P) showed no obvious changes. The accumulation of organic P occurred during mature period, which was related with the decline of P absorption ability of roots, rhizo deposition, and excretion of mineral P absorbed at the early stage of the period.
出处
《吉林农业大学学报》
CAS
CSCD
北大核心
2003年第6期639-642,共4页
Journal of Jilin Agricultural University
基金
吉林省科技发展计划项目(980502)
