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试验采用二次正交通用旋转组合设计 ,建立大豆大垄窄行密植的数学模型 ,明确了种植密度、磷酸二铵和钾肥 3因素与产量的关系 ,并获得相应的最佳农艺措施方案
In the experiment, quadratic orthogonal universal rotary combination design was used to establish the mathematical model of narrow row and close planting of soybean big ridge. The relationship between planting density, three factors of diammonium phosphate and potassium fertilizer and yield was clarified and the corresponding agronomic measures