【摘要】 以自然资源"桐油"为控释材料(从油桐果实中提取),生产控释肥料,研究"控释肥温室无土栽培对烤烟钾素和有机酸含量的影响"。结果表明:成熟期,施桐油控释复合肥最大叶面积为1145cm2,株高为80cm,施普通复合肥最大叶面积为994cm2,株高为74cm,叶面积相差151cm2,株高相差6cm;施控释复合肥比施普通复合肥上部叶片钾素含量高出0.1%、中部叶片高出0.08%、下部叶片高出0.08%;最大叶片有机酸增加2.431μg·g-1。结论:通过温室无土栽培试验证明,控释复合肥可以提高烤烟品质。图1,表3,参14。更多还原

【Abstract】 Tung oil,a natural resource was chosen as the controlled release materials to produce the controlled release fertilizer. We studied the influence of controlled release fertilizer in greenhouse soilless culture on the content of Potassium and organic acid of in tobacco. The plant maximal leaf area and height were 1 145 cm2 and 80 cm respectively under the controlled compound fertilizer while that control treatment were 994 cm2 and 74 cm at maturity,with differences for 151 cm2 and 6 cm. The content of Potassium in upper,middle and lower leaves with controlled compound fertilizer was 0.1%,0.08%,0.08% greater than that of compound fertilization respectively,while the content of organic acid in the maximal leaf area was increased by 2.431 μg·g-1. It proves that controlled released fertilizer can increase the quality of tobacco in greenhouse hydroponic.更多还原