太行山前平原土壤养分分布特征与肥料精准管理研究

对太行山前平原土壤养分分布特征与肥料精准管理研究结果表明,该区土壤养分含量集中在1个或相邻2个养分含量等级范围内,对土壤养分进行分区管理存在可能性;按照土壤养分含量分级标准其土壤肥力属中等水平。土壤速效磷含量高低与冬小麦产量密切相关,P肥施用为影响冬小麦产量的主要因子,而N肥为影响玉米产量的最重要因素,其次为土壤碱解氮与P肥。

The distribution character of soil nutrient and precision management of fertilizer in farmland in the piedmont of Taihang

The distribution character of soil nutrient and precision management of fertilizer in farmland in the piedmont of Taihang were studied.The experiment results show that the soil nutrient contents are laid in a range of one or two closed grades,so it is possible for soil nutrient to be managed in subarea.According to the classification criterion of soil nutrient,the soil fertility in this area is at a middle level.The content of soil available phosphorous(P)is closely related to winter wheat yield and fertilized phosphorous is the main factor affecting winter wheat yield.The nitrogen(N) fertilizer is the most important factor to the maize yield and second one is soil alkaline hydrolysis N or P fertilizer.