控释肥料释放期测定方法研究

Study on the Measurement Method of Release Period of Controlled Release Fertilizers

小麦专用控释拌种复合肥以改性废弃油脂为包膜材料,可以与小麦种子混播,能够有效提高肥料利用率。聚合物包膜控释肥施入土壤后,温度是其养分释放的主要影响因素,相同的控释肥在不同温度地方的养分释放速率不同。主要研究了不同温度与小麦专用控释拌种复合肥释放期之间的关系,建立了三种小麦专用控释拌种肥在不同温度下释放期快速预测模型,快速测定控释肥在不同温度下的释放期,为其生产和施用提供理论依据。

The controlled-release compound fertilizer for the wheat seed dressing with waste oil as the coated materials can be directly mixed with seed and effectively increase the utilization ratio of the fertilizer.Temperature was the main influencing factor of nutrient release after applying the controlled-release fertilizer coated by polymer into the soil.The nutrient release rates of the fertilizer were different at different temperatures.The correlation of different temperatures with the release period of controlled release fertilizer was mainly researched.The rapid prediction model of the release period of the three kinds of controlled-release compound fertilizers for the wheat seed dressing at different temperatures was established.The research can provide a convenient way to rapidly predict the release period of controlled release fertilizers at different temperatures.It also can provide the theoretical basis for the production and application of controlled release fertilizer.