CAJ | 학술논문

在冀中南地区小麦/玉米轮作制度自然生产条件下，对2m 土体磷素周年循环及盈亏变化进行了研究，并提出了磷素高效利用的施用方法。结果表明：小麦/玉米轮作土体磷素含量周年变化呈“M”型；磷素纵向移动性差，多累积于耕层，周年变化幅度随土层的加深而变小；当前生产条件下，小麦/玉米轮作磷素循环呈盈余状态，磷肥施用应以减为主，在施用上以全部或重施于小麦效果较好。
재기중남지구소맥/옥미륜작제도자연생산조건하，대2m 토체린소주년순배급영우변화진행료연구，병제출료린소고효이용적시용방법。결과표명：소맥/옥미륜작토체린소함량주년변화정“M”형；린소종향이동성차，다루적우경층，주년변화폭도수토층적가심이변소；당전생산조건하，소맥/옥미륜작린소순배정영여상태，린비시용응이감위주，재시용상이전부혹중시우소맥효과교호。
Under the natural production conditions of wheat and maize rotation system in central-south of Hebei Province, the annual cycle and loss changes of phosphorus in 2 m soil were studied and the phosphorus application methods for efficient utilization was put forward.The results showed that the annual variation of phosphorus content showed M type in wheat and maize rotation system , phosphorus longitudinal movement was poor , which mostly accumulated in the topsoil, and the annual variation amplitude was smaller with the deepening of the soil.Under current production conditions, phosphorus cycle showed a surplus state in wheat and maize rotation system , phosphate fertilizer should be reduced based on application or re-applied to the whole wheat.