2024年7月18日 星期一 19:43:55

青海省互助县西山乡马铃薯施专用肥效果显著

        1.试验地点和试验材料 试验地设在西山乡马莲滩村,供试品种青薯9号。试验地为壤土,地势平坦,地力情况基本一致。 
  2.试验方法 试验设施用马铃薯专用肥和对照两个小区。试验小区每667平方米(亩)施专用肥50公斤,成本为135元;对照小区每667平方米施二铵30斤,尿素60斤,成本为1035元。两小区均为地膜覆盖栽培,先覆膜后播种,播种时间为4月20日,667平方米保苗3900株,大行距70厘米,小行距40厘米,株距30厘米。肥料施用方法是,作垄时一次性做底肥施入,然后合垄。也可做基肥施入,但要求与种薯块下地有一段时间间隔,肥料施在距种薯块15—20厘米处,切勿大近。播种时,勿将种薯块播在施肥层,以防烧苗。 
  3.生长表现 施用专用肥的马铃薯与常规施肥的相比有明显差异,主要表现:出苗快,提早出苗3—5天,生长快,保苗率高,无缺苗,秧苗叶片深绿;秧苗茎秆粗壮,整个生育期无病害发生,抗病性强,整齐度好;片叶功能期长,比常规施肥叶片大,叶色浓绿。在马铃薯主栽区使用补钾好,极有推广价值。
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