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水稻产量受早晚稻品种布局所支配，水稻品种的布局又受社会生产力的影响而变革。目前，浙中地区水稻品种布局，早稻以中熟为主、晚稻以粳稻为主的新趋势已经形成
The output of rice is dominated by the distribution of early and late rice varieties, and the layout of rice varieties is changed by the influence of social productivity. At present, the layout of rice varieties in central Zhejiang region, mainly in the early maturing rice, late rice to japonica rice-based new trend has been formed