宽甸县耕地土壤养分指标体系研究及施肥建议

Study on the Index System of Soil Nutrients in Kuandian County and Fertilization Recommendations

宽甸县推广测土配方施肥以来,取得了良好效果。为进一步推进测土配方施肥工作,宽甸县对全县耕地土壤养分含量进行测量。测量结果表明:宽甸县耕地土壤有机质、碱解N和有效P含量上升;速效K含量虽然上升,但未达到1980年水平;耕地土壤pH值呈现中性化趋势。根据耕地土壤养分含量,通过拟合土壤养分与产量的方程,建立宽甸县耕地养分指标体系,找出土壤养分与作物产量之间的关系,并提出合理的施肥建议。

The application of soil testing and formulated fertilization has produced good results in Kuandian county. In order to further this work, a survey has been conducted on the soil nutrients in Kuandian county. The result shows that there is an increase in the organic matter, alkaline hydrolysis N and available P. Although there is an increase in readily available K, it has not reached the level of 1980. The soil pH value shows a neutral trend. The soil nutrients index system is established on the basis of the content of soil nutrients and fitting the mathematical equation of soil nutrient and yield so as to put forward a rational fertilization recommendations.