节水灌溉条件下油用亚麻密度氮磷钾四因素正交旋转组合高产栽培模型研究
Plant Fiber Sciences in China(2014)
Abstract
为优化坝上地区水浇地种植业结构,在节水灌溉栽培条件下,采取四因素正交旋转组合设计,研究了施用氮、磷、钾肥对油用亚麻产量作用效果。油用亚麻从出苗后的整个生长期降水量仅142.5 mm,比常年减少50%以上,试验降水条件属于极度干旱。通过现蕾期、开花期、灌浆期每次13.3 m3/666.7 m2关键灌水,满足了油用亚麻正常生长。通过优化解析结果表明:播种密度66.8万/666.7m2有效粒,施用氮肥12.8kg/666.7m2,磷肥7.3kg/666.7m2,钾肥6.9kg/666.7m2,油用亚麻产量最高达239.7kg/666.7m2。提出了一种适宜本地区油用亚麻节水、高产、高收益栽培模式。
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Key words
linseed flax,orthogonal rotation combination design,irrigation,high-yield,water-saving
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