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为寻求威优六四在湘北地区作双晚栽培“高产低耗”的农艺措施组合方案,1984年,我们参加省粮油生产局组织的杂交稻开发性试验协作组,进行了该项试验研究。现将研究的结果及其分析简述如下。 一、试验设计与方法 本试验采用五元二次回归正交旋转组合设计。选择秧田播种量、秧龄期、插植密度,追尿素量、施氯化钾量五项农艺措施作为可控因子。因子水平编码详见表1。 按试验要求设置36个小区,小区长20尺,宽9尺,合0.03亩;小区间做泥埂并用农膜包
In 1984, we participated in the cooperative development experimental group for hybrid rice organized by the Bureau of Grain and Oil Production in the northern part of Hunan Province for the pilot study on the combination of agronomic practices with “high yield and low consumption”. Now the results of the study and analysis are summarized below. First, the experimental design and methods This test using five quadratic regression orthogonal rotation combination design. Seedling selection seeding rate, seedling age, planting density, the amount of urea recovery, the amount of potassium chloride five agronomic measures as a controllable factor. See Table 1 for the factorial level coding. According to the test requirements set 36 cells, the district is 20 feet long, 9 feet wide, together 0.03 acres;