关键词: 小麦8539, 数学模型[30S, 58AA], 模型信度, 农艺措施

Abstract: A Simplified model on culture for high yield of wheat "8539",ŷ=356.64- 30.31 x₁+14.23x 2+34.08x 3+7.56x 4-18.07x 1x 2-13.51x 1x 3-18.98x 1x 4-8.62x 4x 5+10.00x 5 2, was established by way of the quadratic orthogonal rotational combination design involving the 5 factors of sowing time(x₁), density(x₂), nitrogen(x₃) and phosphorus(x₄) as well as potassium(x₅). Accordingto fine selection of factor levels, the yield 12085.8 kg/hm² gained under x₁=-2, x₂=2, x₃=2, x₄=2 and x₅=-2 increased by 6747.0kg/hm²(125.92%) over that under every factor level being equal to zero and by 83.38% over the highest yield 7575.0kg/hm² in wheat cultural history of Sichuan. It is rare benefit of increasing production in systematic pattern for high yield culture of grain crops at present. It was tested and verified by field that this pattern whose confident degree exceeds 0.95 has better stability. The establishment of this pattern will play a directly important role in high yield culture of wheat "8539" and new upper bench about wheat of Sichuan.

Key words: WHEAT 8539, MATHEMATICAL MODELS, CONFIDENT DEGREE OF PATTERN, AGRONOMIC PRACTICES