因子分析表明，早晚稻高产品种理想叶片模型基本相同，即叶片直立，长而窄。这种叶片模型对于早稻尤其适合。在理想公因子中，稻谷产量及生物学产量都有很大的权重，说明二者有很大的相关性，高的稻谷产量必须建立在一定的生物学产量的基础上。生物学产量增加的一个主要途径是具有一定的株高，因株高在高产公因子中也占有较大的权重。早造品种在晚造翻秋种植，其产量有减少的趋势，其理想因子得分也相对降低。 Factor analysis showed that the ideal leaf model of high-yielding varieties was basically the same, that is, the leaves were upright, long and narrow. This leaf model is especially suitable for early rice. Among the ideal common factors, both rice yield and biological yield have great weight, indicating that there is a great correlation between the two. The high paddy production must be based on a certain amount of biological yield. One of the main ways of increasing biological yield is to have a certain plant height, which also takes up a greater weight in high-yielding common factors. Early varieties made in the late autumn planting, its output has decreased, the ideal factor score is also relatively lower.