结果表明，密度和施氮量对有效花朵数的影响达到极显著水平，其交互作用效应也达到显著水平。
The results showed as follows. The effect of density and nitrogen on effective flower numbers reached very significant level, and their interaction reached significant level.
明确了模型因素效应顺序（氮肥＞钾肥＞磷肥）和高产与施肥的关系，以及各肥料产量因素间的交互作用效应。
The sequence of the model factor effects (N>K>P) and the relation between high yield and fertilizer application, and the mutual functions among the yield factors of various fertilizers.
并通过数学模型，对各参试因子的主效应和交互作用效应进行了分析，最后提出旱地棉花高产稳产栽培优化方案。
Main effects and interactions among the tested factors can be analyzed using the models, which will be helpful for making schemes for high-and-stable-yield dryland cotton production.
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