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多年实践说明,长江中下游地区种植一定面积的后季稻,是充分利用自然资源,增加粮食产量的一个重要措施。但是,由于无霜期短,春季温度回升慢,秋季低温来得早,所以7月下旬、8月上旬“双抢”(?)间的收、栽、管农活高度集中。占后季稻面积20%左右的后季稻秧田一般要拖到立秋前后才能栽插。这部分后季稻因为季节迟,秧龄长,产量一直低而不稳,有些田块迟栽迟发,容易遇低温翘穗,甚至颗粒无收,成为后季稻上不去的重要因素之一。
Years of practice shows that planting a certain area of the latter quarter rice in the middle and lower reaches of the Yangtze River is an important measure to make full use of natural resources and increase grain output. However, due to the short frost-free period, the spring temperature rebounded slowly and the autumn low-temperature came earlier. Therefore, the harvest, planting and management of agriculture in late July and early August were intensively concentrated. Post-season rice crop accounts for about 20% of the area of late rice generally to be planted before the fall of autumn. This part of the late rice season because of late, long seedling age, production has been low and unstable, some late late late rice crop, prone to low temperature Qiao spike, or even crop failure to become one of the important factors behind the rice .