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杂交水稻幼穗分化开始时叶龄余数值到底是3.0还是3.5或4.0?笔者认为,不管是常规水稻还是杂交水稻,绝大多数品种或组合幼穗分化开始时其叶龄余数值应是3.0,不是3.5,更不是4.0。
When the spikelet differentiation of hybrid rice begins, what is the residual leaf age value is 3.0 or 3.5 or 4.0? In my opinion, the remnant of leaf age should be 3.0, not 3.5 or even 4.0 when most of the cultivars or combinations panicle differentiation begin no matter conventional rice or hybrid rice.