近30a河北省低平原区黑龙港流域农田土壤肥力演变

为分析河北省黑龙港流域农田土壤的肥力演变情况,利用1980s、2000s和2010s不同时期的土壤肥力调查数据,对河北省邯郸、邢台、衡水和沧州4个地区的农田土壤肥力演变进行了分析。结果表明:近30 a河北省低平原区农田土壤有机质、全氮和速效磷含量均有不同程度的提高,增幅分别为48.45%、41.90%和228.79%;速效钾含量增幅为-18.24%,略有下降。总体而言,近30 a河北省低平原区土壤肥力得到了明显改善,对作物稳产和高产提供了保障,促进了作物产量的提高。

The Soil Fertility Change in the Recent 30 Years for Low Plain Area of Hebei Province

In order to understand the soil fertility development in the low plain area of Hebei Province,a systemic soil fertility surveys in 1980s, 2000s and 2010s was conducted for Handan, Xingtai, Hengshui and Cangzhou areas. The results showed that the soil organic matter content,total N content,available P content all had significantly increasing in the past 30 years of 1980s-2010s, the increasing were 48.45%,41.90% and 228.79%,respectively. But the soil available K content had the trend of decreasing by 18.24% in the 1980s-2010s period. Overall,the soil fertility in the low plain area of Hebei Province in recent 30 years has been improved obviously, which provides guarantee for the stable and high yield of crops,and promotes the improvement of crop yield.