磷素是作物营养三要素之一。稻田磷素供应状况对水稻生产特别是早稻生产,以及小麦、油菜、草籽绿肥等的高产稳产影响极大。土壤的磷素状况主要受成土母质影响。因此,研究黄冈县主要成土母质水稻土的供磷状况和调节途径,对发展黄冈县乃至同一母质的鄂东地区的农业生产都有一定的现实意义。 黄冈县位于我省东部,北面是大别山脉的山前丘陵,南部是沿江平原。水稻土的主要成土母质为花岗片麻岩,第三纪红色砂岩 Phosphorus is one of the three elements of crop nutrition. The status of supply of phosphorus in paddy fields has a great impact on rice production, especially in early rice production, and the high and stable yield of wheat, rapeseed and grass seed green manures. Soil phosphorus status is mainly affected by soil parent material. Therefore, it is of practical significance to study the status of phosphorus supply and regulation in the main soil-parent paddy soils in Huanggang County and to develop agricultural production in the eastern part of Hubei Province and even the same parent material. Huanggang County is located in the eastern part of our province, north of the Dabie Mountains Piedmont hills, the southern plains along the Yangtze River. The main soil parent materials of paddy soil are granitic gneiss and Tertiary red sandstone