红壤区人工草地磷肥施用的若干问题探讨

The problems and countermeasures of phosphate application in pasture in red soil region

南方红壤呈酸性，固磷能力强，磷和矿质元素普遍缺乏，因而牧草高产优质栽培中常需要重施磷肥。通过对红壤地区土壤的重要特性、红壤区牧草生产的磷肥施用、红壤区磷肥施用存在问题综合分析。探讨提高红壤区人工草地磷肥有效性的措施。认为在人工草地磷肥的合理施用可以通过施用时间和方法及与其他肥料的配合施用来解决。

Soils on red soil region are strongly acid and this is suspected of limiting pasture production in south China.These soils are so infertile that productive pastures cannot be developed without applying the phosphate. According to analysis about the character of acid soil and the situation of phosphate application in this area, several restrict factors of developing pasture production in this area was pointed out.On developing countermeasures, the reasonable application of phosphate can be obtained by right application method and time.