文摘

改善potassiumnitrate的溶解和释放特性和coatingwith一些有机和inorganicmaterials尿素肥料

作者(年代):Ebtisam K。Heikal, Salah A.Khalil

本工作描述的方法生产身体准备缓慢AAAA–释放肥料提供一种水不溶性涂层颗粒AAAA–可溶性肥料。选择的肥料是硝酸钾和尿素。氢氧化钙硬脂酸,石蜡,脂肪酸和说话是涂层的材料准备四种类型不同的成分。这些类型的涂料是指由许多例子:例1,Ex2,要是和Ex4。涂覆的颗粒肥料测试他们在水中溶解在20和40°C。发现涂层硝酸钾低于涂层尿素溶解。当温度从20 - 40°C,肥料的溶解率增加。要是和Ex2治疗最好的(最低)溶解速度,分别。Ex4治疗记录最差值由于颗粒的强度很差。释放率硝酸钾和尿素肥料在25 - 50°C和沙质土壤田间持水量测试20个和40%。 Increasing temperature increased the releasing rate. Moisture content had lower effect. Potassium nitrate fertilizer recorded lower values of releasing than urea. Among the treatments, coating of both fertilizers decreased their releasing rate in the following order, Ex3 > Ex2 > Ex1 > Ex4 and finally the uncoated treatment.