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以 浙江省德 清县排溪 冲小流 域为例， 研究 红壤 坡地磷 素流 失的 时 间分 布 特征 及其 影响因 素，结果 表明：（１） 泥 沙结合 态磷是坡 地磷流失 的主 要形 态，在 径流 中占 总磷 的６６ ．２５ ％ ～７９ ．２７ ％ 。（２ ） 坡地 土壤磷 的流失主 要发生在 ６ ～８ 月 ，这段时间 磷的流 失量分别 占全年 总流 失量的 ６０ ％ 以上。（３） 影响红壤 坡地磷 流失时间 分布特 征的因 素主 要为 降雨 和农 事活 动。研 究坡地 土壤磷 流失的时 间分布特 征及其 影响因素 ，可 为调 整农业 活动 的时 间 和采 取 合理 的农 业措施 以减少 土壤磷的 流失提供 依据。
Taking the Paixichong small watershed of Deqing County, Zhejiang Province as an example, the temporal distribution of phosphorus loss and its influencing factors on red slope were studied. The results showed that: (1) Sediment-bound phosphorus is the main form of phosphorus loss on sloping land, The total phosphorus 66. 25% ~ 79. 27%. (2) The loss of soil phosphorus in slope land mainly occurred from June to August, and the loss of phosphorus accounted for over 60% of the total annual loss respectively. (3) The main factors influencing the distribution characteristics of phosphorus loss in red soil slopes are rainfall and agricultural activities. Studying the temporal distribution of soil phosphorus loss and its influencing factors on sloping land can provide the basis for adjusting the time of agricultural activities and taking reasonable agricultural measures to reduce the loss of soil phosphorus.